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Commercial and US Government Launch Vehicles => ULA - Delta, Atlas, Vulcan => Topic started by: zubenelgenubi on 08/23/2016 08:33 pm

Title: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: zubenelgenubi on 08/23/2016 08:33 pm
As of the successful launch of AFSPC-6/GSSAP 3 & 4 on August 19, this is the next Delta IV launch from Cape Canaveral's SLC-37B.

(The launch window is firmly in the October 20 p.m. hours for Eastern Daylight Time, but straddles "midnight" between October 20 and 21 in UTC.)

WGS-7, 8, 9, and 10 are the satellites in the WGS Block 2 follow-on contract.

From the Wideband Global SATCOM Backgrounder at:
http://www.boeing.com/resources/boeingdotcom/space/boeing_satellite_family/pdf/Bkgd_WGS.pdf
Quote
The Wideband Digital Channelizer upgrade, which was awarded in June 2012, will be included on WGS-8 and beyond and will provide a 90 percent improvement in satellite bandwidth.
(The Backgrounder publishing date is November 2015, after the WGS-7 launch.)

***
If any of you can answer this question: Are the Delta IV stages for this launch already at the Cape?

Edited for clarity 8/25/16

***
EDIT 2 on 8/29/16, including date change to subject

My next question is: when will the payload arrive at CCAFS?  We're within 2 months of the launch date.
The answer would appear to be: not yet!--because the launch date is now in November.
August 28 update from SFN launch schedule, already implemented here:

WGS-8 launch date changes to November 17 (November 18 UTC)

Satellite     CCAFS Arrival Date     Launch (UTC)
WGS-4      11/14/2011               1/20/2012
WGS-5      3/12/2013 "recently"  5/25/2013
WGS-6      5/17/2013 "recently"  8/8/2013
WGS-7      5/28/2015                 7/24/2015

Was there a delay in final preparations of the satellite, which has delayed the launch?

Or was the launch delayed, and therefore no pressing immediate need for satellite delivery?

***
EDIT 3 on 9/11/16
SFN Launch Schedule update of Sept. 5 notes that the launch of WGS-9 has also been delayed by a month, from Feb. 3 to March 2.

***
EDIT 4 on 10/4/16
September 22 update to NSF USA launch schedule thread notes that the launch has been further delayed, from November 18 to December 16 UTC (December 15 EST).

(The WGS-9 launch was delayed one day, to March 3, 2017.)

***
EDIT 5 on 10/15/16
Satellite     CCAFS Arrival Date                                          Projected Launch (UTC)
WGS-8      10/12/2016 (via Space Coast Regional Airport)   12/16/2016
Title: Re: Delta IV-M+(5,4) - WGS-8 - December 16, 2016 UTC - Canaveral SLC-37B
Post by: Targeteer on 10/14/2016 11:49 pm
https://www.facebook.com/45thSpaceWing/photos/pcb.10157395864845012/10157395864210012/?type=3&theater

Sharks

I say it all the time because it's true - we are the World's Premier Gateway to Space, and this week just proves it!

Our Airmen and our mission partners had a week for the ages as we moved fast to accept delivery and offload three major space vehicle hardware pieces just days after Hurricane Matthew forced us to lock our gates.

Wednesday proved to be an even busier day as a team of our Airmen and contracted partners coordinated the arrival of the Delta Mariner at the port on Cape Canaveral Air Force Station. The large cargo ship transported two ULA rocket stages and our team ensured 100 percent mission success as we progressed forward with our future launch schedule. The Delta IV booster arrived with minimal delay after the storm and is expected to launch an Air Force Wideband Global SATCOM satellite later this year.

Also late day Wednesday, an Air Force C-17 from Travis AFB delivered the WGS-8 satellite to TICO Airport and our combined team successfully offloaded and secured the satellite. All these major mission milestones were the result of a great team effort from across the wing and all our mission partners, including United Launch Alliance, NASA, TICO airport, Titusville PD, OSL and their PLSSS team, WGS Program Office and Aerospace. No one delivers like our team!

This week is a testament to your dedication, professionalism, resiliency and perseverance. No matter what Mother Nature may throw our way, we will find a way to get the mission accomplished safely and quickly, and maintain our status as the World's Premier Gateway to Space!

One Fight, One Team!

Shark 1

Title: Re: Delta IV-M+(5,4) - WGS-8 - December 16, 2016 UTC - Canaveral SLC-37B
Post by: zubenelgenubi on 10/18/2016 06:19 pm
Launch date moved up slightly...

Delta 4 rocket on the pad for military satellite launch in December (http://spaceflightnow.com/2016/10/18/delta-4-rocket-on-the-pad-for-military-satellite-launch-in-december/)
Quote
The Delta 4 rocket that will launch the U.S. military’s highest capacity communications satellite ever built was rolled to the pad this week.

The two-stage booster moved from the Horizontal Integration Facility to the Complex 37B pad and erected on the launch table to begin preparations for flight.

Liftoff is scheduled on or about Dec. 7 during a window of 6:53 to 7:42 p.m. EST (2353-0042 GMT), a duration of 49 minutes.
<snip>
The launcher will deliver the Wibdeband Global SATCOM satellite No. 8 into a supersynchronous transfer orbit for the U.S. Air Force.
Title: Re: Delta IV-M+(5,4) - WGS-8 - December 16, 2016 UTC - Canaveral SLC-37B
Post by: zubenelgenubi on 11/17/2016 01:37 am
Delta 4 rocket undergoes launch day simulation for its next Air Force mission (http://spaceflightnow.com/2016/11/16/delta-4-rocket-undergoes-launch-day-simulation-for-its-next-air-force-mission/)
Quote
Today’s [November 16] operation, an abbreviated version of a Wet Dress Rehearsal, saw the mobile service gantry retracted to its launch position and the loading of 170,000 gallons of supercold liquid hydrogen and liquid oxygen into the first and second stages of the vehicle while working through portions of a real-life countdown.
Title: Re: Delta IV-M+(5,4) - WGS-8 - December 16, 2016 UTC - Canaveral SLC-37B
Post by: ZachS09 on 11/17/2016 04:15 am
Mission poster made by ULA.

Courtesy of Spaceflight Now.
Title: Re: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 23:53 UTC - Canaveral SLC-37B
Post by: jacqmans on 11/20/2016 09:10 am
Delta IV to Launch WGS-8


Delta IV WGS-8 Mission ArtworkRocket/Payload: A Delta IV Medium+ (5,4) configuration will launch the eighth Wideband Global SATCOM (WGS-8) mission for the U.S. Air Force.

Date/Site/Launch Time: Wednesday, Dec. 7, 2016, from Space Launch Complex-37 at Cape Canaveral Air Force Station, Florida.

Mission Description: WGS satellites are important elements of a high-capacity satellite communications system providing enhanced communications capabilities to America's troops in the field for the next decade and beyond. WGS enables more robust and flexible execution of Command and Control, Communications Computers, Intelligence, Surveillance, and Reconnaissance (C4ISR), as well as battle management and combat support information functions. The WGS constellation augments the existing service available through the UHF Follow-on satellite by providing enhanced information broadcast capabilities.

Launch Notes: WGS-8 will mark ULA’s 70th national security launch since the company was founded in 2006. This is the sixth flight in the Medium+ (5,4) configuration; all launches in this configuration were WGS missions.

Launch Updates: To keep up to speed with updates to the launch countdown, dial the ULA launch hotline at 1-877-852-4321 or join the conversation at www.facebook.com/ulalaunch, twitter.com/ulalaunch and instagram.com/ulalaunch. Hashtags #WGS8 and #DeltaIV.

Go Delta IV! Go WGS-8!
Title: Re: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 23:53 UTC - Canaveral SLC-37B
Post by: Newton_V on 11/22/2016 03:45 pm
I guess none of the artists have ever played pool...  :(
Title: Re: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 23:53 UTC - Canaveral SLC-37B
Post by: Ronsmytheiii on 11/22/2016 05:58 pm
Shot as of November 18th at the pad:

https://www.instagram.com/riversd74/
Title: Re: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 23:53 UTC - Canaveral SLC-37B
Post by: russianhalo117 on 11/22/2016 06:08 pm
Shot as of November 18th at the pad:

https://www.instagram.com/riversd74/
payload due to move to the pad in the next few days (statement is based on the DIV traditional pad flow timeline)
Title: Re: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 23:53 UTC - Canaveral SLC-37B
Post by: ChrisGebhardt on 11/22/2016 06:19 pm
Shot as of November 18th at the pad:

https://www.instagram.com/riversd74/
payload due to move to the pad in the next few days (statement is based on the DIV traditional pad flow timeline)

It was already moved to the pad after Atlas V GOES-R launch - per photos of people stuck behind it on KSC/CCAFS roads.

Edit: Specifically, WGS-8 payload was moved to the pad on Sunday, 20 November.
Title: Re: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 23:53 UTC - Canaveral SLC-37B
Post by: Steven Pietrobon on 11/23/2016 07:17 am
I guess none of the artists have ever played pool...  :(

WGS-8 is the 8-ball in this case, but the artist forgot to put in the higher number balls!
Title: Re: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 23:53 UTC - Canaveral SLC-37B
Post by: Newton_V on 11/23/2016 02:42 pm
I guess none of the artists have ever played pool...  :(

WGS-8 is the 8-ball in this case, but the artist forgot to put in the higher number balls!

No, 1, 4, and 7 shouldn't be stripes, only 9 thru 15.
Title: Re: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 23:53 UTC - Canaveral SLC-37B
Post by: Steven Pietrobon on 11/24/2016 04:50 am
No, 1, 4, and 7 shouldn't be stripes, only 9 thru 15.

The 8-ball is the wrong size as well! :-)
Title: Re: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 23:53 UTC - Canaveral SLC-37B
Post by: vapour_nudge on 11/24/2016 11:12 am
No, 1, 4, and 7 shouldn't be stripes, only 9 thru 15.

The 8-ball is the wrong size as well! :-)
We had a pool/billiard table for years and I'm sure the 3 was red. I think the 7 was burgundy? Not that it matters
Title: Re: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 23:53 UTC - Canaveral SLC-37B
Post by: russianhalo117 on 11/24/2016 06:39 pm
No, 1, 4, and 7 shouldn't be stripes, only 9 thru 15.

The 8-ball is the wrong size as well! :-)
We had a pool/billiard table for years and I'm sure the 3 was red. I think the 7 was burgundy? Not that it matters
Its called the game of confusion and employs reverse psychological imagery to attempt to brainwash the commoners.
Title: Re: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 23:53 UTC - Canaveral SLC-37B
Post by: FutureSpaceTourist on 12/05/2016 01:52 pm
Launch forecast is 80% GO for Wed, 60% GO if 48 hr delay.
Title: Re: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 23:53 UTC - Canaveral SLC-37B
Post by: ZachS09 on 12/05/2016 09:28 pm
http://spaceflightnow.com/2016/12/05/upgraded-satellite-for-communications-among-u-s-military-forces-ready-to-launch/

"Upgraded satellite for communications among U.S. military forces ready to launch"
Title: Re: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 23:53 UTC - Canaveral SLC-37B
Post by: ZachS09 on 12/05/2016 09:29 pm
Launch timeline on Spaceflight Now.

http://spaceflightnow.com/2016/12/05/timeline-delta-4wgs-8-launch-events/
Title: Re: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 23:53 UTC - Canaveral SLC-37B
Post by: Targeteer on 12/06/2016 03:36 am
http://www.losangeles.af.mil/News/Article-Display/Article/1020211/air-force-ready-to-launch-wgs-8-satellite#.WEW0Yl3dEoE.facebook

LOS ANGELES AIR FORCE BASE, Calif. -- The U.S. Air Force and its mission partners are scheduled to launch the eighth Boeing-built Wideband Global SATCOM satellite aboard a United Launch Alliance Delta IV Evolved Expendable Launch Vehicle. Liftoff is scheduled for Dec. 7 from Space Launch Complex 37B, Cape Canaveral Air Force Station, Florida. The launch window opens at 6:53 p.m. EST and will remain open for 42 minutes.

“This launch will significantly enhance the WGS constellation, providing vital wideband communications anytime, anywhere to U.S. warfighters and our international partners through broadcast, multicast, and point to point connections.” Said Lt. Gen. Samuel Greaves, Space and Missile Systems Center commander and Air Force program executive officer for Space. “WGS-8 maintains the core capability to support X and Ka-band communications simultaneously, while also increasing communication capacity.”

With a new state-of-the-art digital channelizer, WGS-8 will increase communication capacity by approximately 45 percent more than previous WGS satellites. The WGS constellation is the nation’s highest-capacity military communication system, providing a quantum leap in communication capability for the U.S. military and allied forces. This vital asset continually collects and routes real-time data through all X-band and Ka-band terminal types in support of a wide variety of missions, from search and rescue efforts to military operations.

“The demand for ever-increasing reliable and secure satellite communications has been at the forefront of the WGS mission,” said Greaves. “WGS provides communication connectivity across all mission areas, including air, land, and naval warfare.”

Operated by U.S. Air Force’s 3rd Space Operations Squadron at Schriever Air Force Base, the WGS constellation delivers reliable and secure communications services worldwide 24-hours a day, seven days a week as a vital military asset to the US and allied forces.
The Air Force is committed to providing capabilities to ensure combatant commanders receive the tools they need to effectively communicate and coordinate strategic and tactical operations against any adversary.

Air Force Space Command's Space and Missile Systems Center, located at Los Angeles Air Force Base in El Segundo, California, is the U.S. Air Force's center for acquiring and developing military space systems. Its portfolio includes GPS, military satellite communications, defense meteorological satellites, space launch and range systems, satellite control networks, space-based infrared systems, and space situational awareness capabilities.
Title: Re: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 23:53 UTC - Canaveral SLC-37B
Post by: FutureSpaceTourist on 12/06/2016 05:49 pm
Quote
James Dean ‏@flatoday_jdean 4h4 hours ago

Delta IV/WGS-8 weather forecast remains 80% "go" for 6:53pm Wed. launch from Cape Canaveral. 24-hr delay forecast has dropped to 40% "go."
https://twitter.com/flatoday_jdean/status/806151192132931589 (https://twitter.com/flatoday_jdean/status/806151192132931589)

There's an issue with the 45th Weather Squadron's website so can't currently download the updated forecast.


Quote
ULA ‏@ulalaunch 1h1 hour ago

The ULA Launch Readiness Review is complete! #DeltaIV #WGS8 is set to launch TOMORROW (Dec 7). Will you be watching? http://bit.ly/div_wgs8
https://twitter.com/ulalaunch/status/806186129322115073 (https://twitter.com/ulalaunch/status/806186129322115073)
Title: Re: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 23:53 UTC - Canaveral SLC-37B
Post by: jacqmans on 12/06/2016 08:07 pm

Due to safety restrictions in place for the Delta IV WGS-08 mission, 45th Space Wing Public Affairs is not hosting any media viewing activities on CCAFS in support of this launch.

Public safety is a matter we take extremely seriously and for this launch, our safety experts have determined that our ITL media launch viewing location falls within the restricted Flight Caution Area.  Therefore, media interested in covering the launch must do so from an off-base location.


Media Operations
45th Space Wing Public Affairs
Title: Re: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 23:53 UTC - Canaveral SLC-37B
Post by: Ilikeboosterrockets on 12/06/2016 10:00 pm
Delat IV WGS-8 Payload Mate

https://www.youtube.com/watch?v=pR5hkicFGJQ
Title: Re: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 23:53 UTC - Canaveral SLC-37B
Post by: Ilikeboosterrockets on 12/06/2016 10:15 pm
Delta IV WGS-8 Mission Profile

https://www.youtube.com/watch?v=7EAEK2J5W3Q
Title: Re: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 23:53 UTC - Canaveral SLC-37B
Post by: FutureSpaceTourist on 12/07/2016 11:35 am
Quote
Orbital ATK ‏@OrbitalATK 9m9 minutes ago

Orbital ATK team at the launch pad yesterday preparing for today’s #DeltaIV launch of #WGS8. @ulalaunch

https://twitter.com/OrbitalATK/status/806474511587622912 (https://twitter.com/OrbitalATK/status/806474511587622912)
Title: Re: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 23:53 UTC - Canaveral SLC-37B
Post by: Galactic Penguin SST on 12/07/2016 11:53 am
Moved for live coverage.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Chris Bergin on 12/07/2016 01:56 pm
Feature article, excellent as always:

https://www.nasaspaceflight.com/2016/12/ula-delta-iv-wgs-8-launch/

By William Graham.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ethan829 on 12/07/2016 03:41 pm
ULA's website says launch window is 6:53 - 7:42 PM EST, while others say it starts at 6:52. Any idea where the discrepancy arises?
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Newton_V on 12/07/2016 04:10 pm
ULA's website says launch window is 6:53 - 7:42 PM EST, while others say it starts at 6:52. Any idea where the discrepancy arises?

Launch windows show 23:53 as window open and 00:42 as close (GMT).
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: FutureSpaceTourist on 12/07/2016 06:13 pm
Updated forecast from today attached. No real change, still 80% GO  :)
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Chris Bergin on 12/07/2016 07:14 pm
ULA MST rollback photos.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Chris Bergin on 12/07/2016 07:14 pm
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 08:48 pm
To keep you guys updated for the time being, the Delta Cryogenic Second Stage has finished its LOX loading phase. Topping of the LH2 will start at T-1 hour, 45 minutes.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 08:53 pm
Under two hours to launch.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 09:08 pm
T-1 hour, 45 minutes. The second stage LH2 topping is underway.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Rocket Science on 12/07/2016 09:17 pm
http://www.ulalaunch.com/webcast.aspx
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: russianhalo117 on 12/07/2016 09:19 pm
http://www.ulalaunch.com/webcast.aspx

https://www.youtube.com/watch?v=C7RD-u2g6Wg
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 09:34 pm
T-1 hour, 20 minutes. The second stage LOX topping has started. With that, the fueling operations are nearing completion.

We're also one hour from the beginning of the ULA webcast.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 09:43 pm
T-1 hour, 10 minutes. The Flight Termination System checks have begun. This is a self-destruct system hidden inside the launch vehicle to detonate it should a launch contingency occur.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 09:47 pm
Current weather:

Temp: 70.1°F
Skies: Clear
Wind: NNE @ 3mph
Pressure: 30.04 in
Visibility: 10.0 miles
Heat Index   : 71 °F
Dew Point   : 63 °F
Humidity: 79%
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 09:54 pm
Under one hour to launch. The Command Receiver Decoder now being tested.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 09:55 pm
Current weather:

Temp: 70.1°F
Skies: Clear
Wind: NNE @ 3mph
Pressure: 30.04 in
Visibility: 10.0 miles
Heat Index   : 71 °F
Dew Point   : 63 °F
Humidity: 79%

What's the source of this current weather? I would like to use it for future launch coverages.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:00 pm
Correction: We're at T-38 minutes (L-53 minutes.)
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:08 pm
T-30 minutes. Both the Common Booster Core and the Delta Cryogenic Second Stage have liquid hydrogen as the fuel and liquid oxygen as the oxidizer. Standing 215 feet tall and weighing 881,997 pounds, the Delta IV Medium+ (5,4) (upg.) and its predecessor, the one with the weaker RS-68 engine; have exclusively launched WGS satellites since 2009. At liftoff, the launch vehicle will produce 1,702,974 pounds of thrust, which is about as much as the Falcon 9 rocket.

FTS checks are complete.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 10:08 pm
A look at our flight path today, culminating in WGS-8 separation at 41mins 43.6 seconds after liftoff.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Chris Bergin on 12/07/2016 10:14 pm
We've got the test bars people!
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:17 pm
T-20 minutes.

15 minutes until coverage starts.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:19 pm
Another correction: We're at T-5 minutes.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 10:19 pm
The 4 strap on GEM 60 boosters from Orbital ATK each produce 185,800 lbf at liftoff, burning HTBP propellant for 91 to 93 seconds for a total cumulative booster thrust at liftoff of 743,200 lbf — increasing to 1,124,000 lbf during flight.

At liftoff, the Common Booster Core's RS-68A engine provides 705,250 lbf and burns LH2 and LOX for 245 seconds (4 minutes 5 seconds).

Total thrust at liftoff of the Delta IV M+ (5,4) is 1,448,450 lbf.  During flight, when the SRMs reach maximum thrust, the total combined thrust of the vehicle reaches 1,829,250 lbf.

The second stage, the Delta Cryogenic Second Stage (DCSS), burns LH2 and LOX via a single RL10-B-2 engine that delivers 24,750 lbf.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:19 pm
T-4 minutes and holding. This is a planned 30-minute hold.

I thought the hold was 15 minutes long.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 10:23 pm
Today's main flight events are:

Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:23 pm
9 minutes left until the live coverage.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 10:24 pm
10 minutes to start of broadcast.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:27 pm
5 minutes to go.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 10:29 pm
First burn of the DCSS tonight will last 936.8 seconds, or 15 minutes 36.8 seconds

This will be followed by a coast phase of 9 minutes 34.8 seconds.

The DCSS engine will the ignite again for a 3 minute 7 second burn.

After that, WGS-8 separation will occur 9 minutes 10seconds later.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 10:31 pm
Two minutes to start of broadcast.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 10:32 pm
Tonight will be the 6th flight of the Delta IV M+ (5,4) variant.  This configuration made its first flight on 5 December 2016, so happy belated birthday to Delta IV M+ (5,4).
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 10:33 pm
Sound check.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:34 pm
From Cape Canaveral Air Force Station, United Launch Alliance presents live coverage of the launch of WGS-8 atop a Delta IV Medium+ (5,4) (upg.) rocket.

Tonight's PAO is Mike Underhill, who commentated the GPS IIF-11 mission in October 2015.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 10:34 pm
We have a 49min launch window tonight.  So far, everything looks good for launch.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Chris Bergin on 12/07/2016 10:34 pm
Off we go...
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 10:34 pm
Webcast has started. In 30 minute hold.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:35 pm
At 23:45 UTC, there will be a Twitter Q&A competition.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 10:35 pm
Final weather is WITHIN launch commit criteria.  Probabilty of violation is 10%
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Prober on 12/07/2016 10:36 pm
beautiful night
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Chris Bergin on 12/07/2016 10:36 pm
Kathy Winters with the weather. People will reminder her from pre-Shuttle missions.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:36 pm
Ground winds: ENE at 5 knots

Temperature: 67 degrees Fahrenheit

Probability of GO weather: 90%
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 10:36 pm
There's going to be a test!

Weather is go.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Chris Bergin on 12/07/2016 10:37 pm
Pool balls...
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 10:37 pm
WGS-8 is the 8-ball.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:37 pm
Steve Agid now explaining the launch ascent profile.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 10:38 pm
Showing preview.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:39 pm
L-15 minutes.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 10:39 pm
L-15 minutes.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 10:40 pm
L-14 minutes.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:40 pm
Wind monitor system is set to Placard 6.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 10:41 pm
Wind monitoring stations being configured.  Winds are very calm tonight and not anticipated to be an issue for liftoff.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Chris Bergin on 12/07/2016 10:41 pm
Config:
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 10:41 pm
L-13 minutes. Describing vehicle.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:41 pm
Underhill now explaining the launch campaign leading up to the MST rollback.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Prober on 12/07/2016 10:42 pm
the parts  ;)
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 10:42 pm
L-12 minutes. Taped earlier.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Chris Bergin on 12/07/2016 10:42 pm
Dedication:
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:42 pm
This launch is dedicated to Michael A. Carr.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 10:43 pm
L-11 minutes. Dedication to Michael A. Carr.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 10:43 pm
For the record, this is our final weather forecast for tonight.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:43 pm
L-9 minutes, 30 seconds. The WGS-8 satellite now on internal power.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:44 pm
Solar radiation is acceptable for launch.

Playing a WGS Presentation.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 10:44 pm
L-10 minutes.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 10:45 pm
L-9 minutes. WGS promo.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:45 pm
Time for the Q&A competition to start.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:46 pm
L-7 minutes. Launch Conductor Ed Kitta now polling 32 engineers and launch officials to ensure all is in readiness for the planned T0 time at 23:53 UTC (6:53 PM EST). If anybody says "NO GO", then the hold can be extended for up to 49 minutes until 00:42 UTC on the 8th (7:42 PM EST).
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 10:46 pm
L-8 minutes. Conducting poll shortly.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Prober on 12/07/2016 10:46 pm
they make it happen
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 10:46 pm
Polling underway.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 10:47 pm
L-7 minutes. Performing poll.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Chris Bergin on 12/07/2016 10:47 pm
Polling...
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 10:47 pm
All stations are GO.  We're headed for an on-time launch at 18:53 EST.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:47 pm
L-6 minutes. Polling is complete and all systems are READY to support WGS-8's launch at the beginning of the window.

Visible green board.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Prober on 12/07/2016 10:48 pm
all green

Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:48 pm
L-5 minutes. This Delta IV mission will be the 34th overall since its debut in November 2002, the second use of the Medium+ (5,4) (upg.) configuration including the uprated RS-68A engine, the 28th Delta IV from Cape Canaveral, and the 36th rocket launch from SLC-37B whose first launch dates back to the early SA-5 mission in 1964.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 10:48 pm
L-6 minutes. Go for launch!
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 10:49 pm
L-5 minutes.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:49 pm
T-4 minutes and counting. The Terminal Count has started.

Delta IV is transferring to internal power, the safe and arm switches have been armed, and the second stage tank propellant securing is underway.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 10:49 pm
T-4mins and COUNTING!
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:49 pm
T-3 minutes, 30 seconds. The transfer to internal power was satisfactory. The first stage tank propellant securing has started. The hydrogen burn igniters under the RS-68A engine have been armed. These devices will be ignited at T-15 seconds to reduce any residual hydrogen gas prior to ignition.

T-3 minutes, 15 seconds. Standing by for the first stage tank pressurization.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 10:50 pm
T-4 minutes.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:50 pm
T-3 minutes. All first stage tanks are secured at 100%. The vehicle ordnance is armed.

The first stage LOX tank is pressurizing.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:50 pm
T-2 minutes, 30 seconds. The "critical hold point", also known as SRB TVC blowdown, will be at T-25 seconds. If a hold occurs after that, we can no longer recycle in 24 hours.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 10:51 pm
T-3 minutes. Vehicle ordnance arming.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 10:51 pm
REMEMBER: The Delta IV Common Booster Core is sometimes on fire when the vehicle lifts off.  This is normal for this rocket and nothing to worry about.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:51 pm
T-2 minutes. The master script is turned on.

The hydraulic system is configured for flight.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Chris Bergin on 12/07/2016 10:51 pm
T-120 seconds. Wide shot.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:51 pm
T-1 minute, 45 seconds. The first stage LH2 tank is pressurizing.

T-90 seconds. The second stage LOX is secured at 100%.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Prober on 12/07/2016 10:51 pm
final xount
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 10:52 pm
T-2 minutes.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 10:52 pm
90secs.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:52 pm
T-1 minute, 20 seconds. The LOX GSE has been secured.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 10:52 pm
T-1min!
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:52 pm
T-60 seconds and counting. The Range Operations Controller has given the GREEN light.

T-50 seconds and counting. The second stage LH2 is secured at 100%. Launch has been enabled and the main power is off.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:52 pm
T-30 seconds. Status check. Go Delta, Go WGS.

We have flight lock-in.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 10:53 pm
T-1 minute. Range is green.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:53 pm
T-15 seconds. Launch igniters armed. ROFI ignition.

12, 11, 10, 9, 8, 7, we have a go for main engine start, 4, 3, 2, 1, booster ignition, and liftoff of WGS-8, fortifying our space-based military communications and ensuring 100% mission success launch after launch.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:53 pm
Tower cleared. 10 seconds into the flight. Pitch and yaw programs have started, putting the Delta IV on an easterly azimuth of 93.46 degrees.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:53 pm
T+34 seconds. Mach 1. Delta IV exceeding a speed greater than that of sound. All four solids have peaked out at maximum thrust.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Chris Bergin on 12/07/2016 10:54 pm
LAUNCH!!
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 10:54 pm
Liftoff!
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:54 pm
T+46 seconds. Max-Q. We've experienced the region of maximum dynamic pressure. No attitude disturbances detected.

You're listening to Patrick Moore provide launch vehicle ascent data from the telemetry lab at Cape Canaveral Air Force Station.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Prober on 12/07/2016 10:54 pm
go light
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:54 pm
T+1 minute. The four GEM-60 SRBs will burn until 91 seconds. Nine seconds later, the fixed-nozzle solids will separate followed by the TVC-nozzle solids two seconds later.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Chris Bergin on 12/07/2016 10:54 pm
Good first stage flight.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:55 pm
T+90 seconds. We have SRB burnout. Standing by for jettison.

T+1 minute, 40 seconds. Solid motor jettison. All four have separated on time. The RS-68A engine continues to burn well at 108% of rated performance.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 10:55 pm
T+1 minute.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Chris Bergin on 12/07/2016 10:55 pm
There go the solids.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:55 pm
T+2 minutes, 30 seconds. Next major event will be payload fairing jettison at 3 minutes, 14 seconds.

I seriously think that Underhill has a script in front of him.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 10:56 pm
T+2 minutes. Boosters have separated.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:56 pm
T+3 minutes. Pressures look just fine in both the LOX and LH2 tanks. Good telemetry so far.

T+3 minutes, 15 seconds. Fairing separation confirmed. Main engine throttling will occur just before MECO at 3 minutes, 56 seconds.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 10:57 pm
T+3 minutes.

Fairing jettison.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:57 pm
T+3 minutes, 50 seconds. The RS-68A has throttled to 58% on time.

And we have Main Engine Cut Off. With that, the Delta IV weighs about 10% of its liftoff mass.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:57 pm
T+4 minutes, 2 seconds. Stage separation confirmed. The second stage nozzle now beginning to deploy.

We have LOX and fuel prestart.

T+4 minutes, 15 seconds. Ignition and full thrust. The RL-10B-2 engine has started up for a burn that will last 15 minutes and 37 seconds. This is the longer of the two firings.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 10:57 pm
Saw it clearly from Daytona through BECO.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Chris Bergin on 12/07/2016 10:58 pm
Staging 1-2.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 10:58 pm
T+4 minutes.

First stage cutoff and separation.

Second stage ignition.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:58 pm
T+5 minutes. We're currently relying on Satellite Tool Kit telemetry as there is no onboard camera on the Delta IV itself.

Vehicle body rates are healthy.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:58 pm
SECO-1 should occur at 19 minutes, 52 seconds. Remember that.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 10:58 pm
Everything nominal.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 10:59 pm
T+5 minutes.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 10:59 pm
6 minutes Mission Elapsed Time. Vehicle is on course and on track.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 11:00 pm
T+6 minutes. Describing WGS mission.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:00 pm
Altitude is 230 miles, velocity is 10,900 miles per hour.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 11:01 pm
T+7 minutes.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:01 pm
Passing T+8 minutes. Attitude remains nominal; the pump speeds and injector pressures look good.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: DatUser14 on 12/07/2016 11:01 pm
Explaining geostationary orbits
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 11:02 pm
T+8 minutes.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: virnin on 12/07/2016 11:02 pm
Before he signed off, Patrick said this was the first of three burns.  Profile said two burns.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 11:03 pm
T+9 minutes. Can see clock at far left.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 11:03 pm
Before he signed off, Patrick said this was the first of three burns.  Profile said two burns.

He misspoke.  It's just two burns.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:03 pm
T+10 minutes. Less than 10 minutes to SECO-1.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: MATTBLAK on 12/07/2016 11:03 pm
Before he signed off, Patrick said this was the first of three burns.  Profile said two burns.
Slip of the tongue?
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Rocket Science on 12/07/2016 11:03 pm
Mention of the "War in Space" from a week ago on CNN...
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 11:03 pm
About halfway through the first DCSS burn at this point.  All is going well.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Newton_V on 12/07/2016 11:03 pm
Before he signed off, Patrick said this was the first of three burns.  Profile said two burns.

2 Burns to SV separation, followed by a de-orbit burn.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 11:04 pm
T+10 minutes.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:04 pm
Altitude is 272 miles, velocity is 12,500 miles per hour.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 11:04 pm
@torybruno on Twitter.  "Hot, straight and normal"
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 11:05 pm
T+11 minutes. Injector pressures looking good.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 11:05 pm
Still ~7mins left in this burn.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 11:06 pm
T+12 minutes.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:06 pm
Currently, the RL-10B-2 second stage engine is producing 24,752 pounds of thrust.

The vehicle is flying over the Atlantic Ocean at this time.

Playing another WGS Presentation.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: MATTBLAK on 12/07/2016 11:06 pm
Good coverage. I've always thought the Delta IV is a wonderful launcher! Hey, Steve Pietrobon: when you get time, could you work out what a version of 'single-stick' Delta IV could place into LEO if it had 8 or even 10 GEM solids (whatever fitted) and a stronger upper stage engine, such as the MB-60?
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:07 pm
T+14 minutes. About 6 minutes to SECO-1.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 11:07 pm
T+13 minutes. Another WGS video. Talking about avoiding jamming.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:08 pm
Good coverage. I've always thought the Delta IV is a wonderful launcher! Hey, Steve Pietrobon: when you get time, could you work out what a version of 'single-stick' Delta IV could place into LEO if it had 8 or even 10 GEM solids (whatever fitted) and a stronger upper stage engine, such as the MB-60?

There was a hypothetical variant called the Medium+ (5,8). But, nobody discussed a variant with 10 SRBs.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 11:08 pm
T+14 minutes. 6th satellite funded by Australia. 9th satellite funded by international consortium.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Chris Bergin on 12/07/2016 11:08 pm
Burn going well.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:09 pm
Altitude is 216 miles, velocity is 15,100 miles per hour.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 11:09 pm
T+15 minutes.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:10 pm
Altitude is 190 miles, velocity is 16,000 miles per hour.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 11:10 pm
T+16 minutes. RL-10 performing well.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 11:10 pm
T+16min 30s
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:10 pm
T+17 minutes. Three minutes until SECO-1.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 11:10 pm
Apogee is starting to rise off the roof as Delta heads for intended transfer orbit.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:11 pm
We are now positive perigee. Delta IV is orbital.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 11:11 pm
T+17 minutes.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 11:11 pm
Apogee: 1,200 nm
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:11 pm
T+18 minutes.

Fuel and oxidizer pressures look good.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: MATTBLAK on 12/07/2016 11:11 pm
Good coverage. I've always thought the Delta IV is a wonderful launcher! Hey, Steve Pietrobon: when you get time, could you work out what a version of 'single-stick' Delta IV could place into LEO if it had 8 or even 10 GEM solids (whatever fitted) and a stronger upper stage engine, such as the MB-60?

There was a hypothetical variant called the Medium+ (5,8). But, nobody discussed a variant with 10 SRBs.
Yes; 8x then - the routing of propellant lines on the outside of the corestage would probably preclude more than 8, just as the Atlas V can only have 5x solids in total. The Medium+ (5,8) might have put the Delta IV-H out of a job, especially if there were an upper stage upgrade. Meanwhile - back to the ascent... ;)
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 11:12 pm
T+18 minutes.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 11:12 pm
Apogee now 2,000 nm
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:12 pm
T+19 minutes. One minute until SECO-1.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 11:13 pm
T+19 minutes.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:13 pm
T+19 minutes, 45 seconds. Standing by for SECO-1.

And we have SECO-1. Delta IV will now enter a 9 minute, 35 second coast phase before second stage restart.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 11:13 pm
SECO-1 registered.

Perigee: 100 nm
Apogee: 3,282.1 nm
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 11:13 pm
SECO1!
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:13 pm
T+20 minutes, 20 seconds. According to the STK telemetry, you can see up to four RCS settling thrusters firing. They've been in use during the first burn and this coast phase, and will continue to fire at short intervals during the second burn and the pre-spacecraft separation events.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:14 pm
Arvel Chappell of Boeing now being interviewed.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:15 pm
T+22 minutes.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: William Graham on 12/07/2016 11:15 pm
Orbit just after SECO-1
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 11:16 pm
T+22 minutes. Second ignition at T+29:27.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:17 pm
T+24 minutes. Not much to report.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 11:17 pm
Showing nice model of WGS.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:18 pm
If all of you are thinking that there are only two burns of the Delta Cryogenic Second Stage, there's actually a third burn that deorbits the second stage.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:19 pm
Currently, the apogee is 1291.5 nautical miles, the perigee is 100.2 nautical miles, and the inclination is 27.602 degrees to either side of the Equator.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 11:19 pm
T+25 minutes.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 11:19 pm
4mins to 2nd burn start.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:19 pm
T+26 minutes. About three and a half minutes until second stage restart.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: virnin on 12/07/2016 11:20 pm
I can't believe how much the settling thrusters have raised perigee, over a quarter mile.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: zubenelgenubi on 12/07/2016 11:20 pm
Arvel Chappel makes effective use of the WGS scale model.
He also demonstrates that carrying an ink pen can still come in handy in our digital age! (demonstrating phased array beam steering)

(And his names rhyme!)

Corrected name spelling
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 11:20 pm
Apogee is currently 3,293nm.  It about to get A LOT higher... quickly.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 11:20 pm
3 minutes to 2nd ignition.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:21 pm
T+27 minutes, 30 seconds. Two minutes left in the coast phase.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Chris Bergin on 12/07/2016 11:21 pm
Coming to the end of the coast phase.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 11:21 pm
~2mins to engine ignition.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 11:21 pm
2 minutes to 2nd ignition.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:22 pm
T+29 minutes. We have LOX and fuel prestart in preparation for the second burn.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 11:22 pm
1 minute to 2nd ignition.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 11:23 pm
2nd engine firing of DCSS is underway!
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:23 pm
T+29 minutes, 27 seconds. We have second stage restart and full thrust. Hydraulics look good.

This second burn will last 3 minutes and 7 seconds.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Chris Bergin on 12/07/2016 11:23 pm
Second burn. Three minutes in duration.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:23 pm
Performance is nominal with good thrust.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 11:23 pm
Prestart and second ignition.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 11:23 pm
Apogee now over 5,000nm.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:24 pm
T+30 minutes, 30 seconds. Data is still looking good.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 11:24 pm
Apogee over 7,000nm.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 11:24 pm
Ignition +1 minute.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 11:25 pm
Apogee over 10,000nm
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:25 pm
T+31 minutes, 30 seconds. One minute until SECO-2.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 11:25 pm
Apogee over 13,000nm
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 11:25 pm
Ignition +2 minutes.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:26 pm
T+32 minutes, 34 seconds. SECO-2 confirmed.

The RL-10B-2 engine has officially shut down, ending tonight's powered flight. Separation of WGS-8 will occur 9 minutes and 10 seconds after SECO-2.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:26 pm
T+33 minutes. The vehicle is currently in a geosynchronous transfer orbit with an apogee of 44,378 kilometers, a perigee of 435 kilometers, and an inclincation of 27 degrees to either side of the Equator.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 11:26 pm
Parameters at SECO-2

Perigee: 232nm
Apogee: 23,870nm
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 11:26 pm
Main engine cutoff!
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:27 pm
Delta IV is now flying over western Africa. Maybe over Equatorial Guinea.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:27 pm
Looking at the results of the Q&A competition.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Chris Bergin on 12/07/2016 11:28 pm
Unfortunate twitter handle with a winning answer! ;D
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:29 pm
T+36 minutes. Five minutes until spacecraft sep.

Playing the ULA 10th anniversary video.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 11:30 pm
Trivia questions and answers.

Spacecraft Separation at T+41:43.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 11:31 pm
T+36 minutes. Showing ULA promo.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:32 pm
T+39 minutes.

Continuing to see the RCS settlers in action.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 11:32 pm
T+38 minutes.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Rocket Science on 12/07/2016 11:32 pm
Happy 10th birthday ULA! :)
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 11:33 pm
Pending successful sep of WGS-8, this will bring Delta IV’s total success rate to 33/34, or 97.05%, with just one partial failure.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:33 pm
T+40 minutes. At this time, the second stage would spin slowly to a speed of 5 rpm in preparation for spacecraft separation, however this is not a frequent event during Delta IV launches.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 11:34 pm
2 minutes to spacecraft separation.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 11:35 pm
1 minute to spacecraft separation.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ChrisGebhardt on 12/07/2016 11:35 pm
Separation confirmed!
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:35 pm
T+41 minutes, 44 seconds. Spacecraft separation is confirmed. 8 out of 10 WGS satellites now in orbit; one of the eight (WGS-8) will soon begin several firings of its LAE to circularize its orbit.

Congrats to United Launch Alliance, Boeing, and the United States Air Force on a flawless night launch of the venerable Delta IV. It currently has a record of 33 successes and one partial failure, giving the rocket family a 97% success rate overall.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:35 pm
Now that WGS-8 is in orbit, only four more single-stick Delta IVs remain: WGS-9, WGS-10, GPS III-1, and NROL-47. After these missions are launched over the next two years, the Heavy version will only remain as needed for national security payloads.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Chris Bergin on 12/07/2016 11:35 pm
S/C Sep!

William's article, updated:
https://www.nasaspaceflight.com/2016/12/ula-delta-iv-wgs-8-launch/

Great work by Stephen and Chris G again with the coverage!
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 11:36 pm
Spacecraft separation!
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:36 pm
The webcast is now closing off with a reshowing of the 23:53 UTC launch from Cape Canaveral.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Craftyatom on 12/07/2016 11:36 pm
Worth noting that, at both RL-10 startups, minor startup transients were reported by the ascent data commentator, but they quickly subsided, and obviously had no impact on the mission itself.

I'm guessing it's just noisy data - anyways, congratulations to everyone involved for a fantastic mission!
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/07/2016 11:36 pm
Stay with us for ULA's next mission on December 16 at 18:26 UTC when an Atlas V 431 rocket launches EchoStar 19/Jupiter 2 for Lockheed Martin Commercial Launch Services, EchoStar, and HughesNet.

From Cape Canaveral Air Force Station, good night!
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/07/2016 11:39 pm
Giving congratulations and thanks.

Launch replay. Nice fireball!

End of broadcast.

Congratulations to ULA and the USAF for the successful launch!
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Mark McCombs on 12/07/2016 11:39 pm
Congrats to ULA's Delta IV team, AR, USAF, 45th SW and all others for the great launch and deployment.

Thanks to Steven, Zach, Chris, and Chris for the NSF coverage.

 8) 
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: kevin-rf on 12/07/2016 11:41 pm
Congrads and way to go ULA!
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Rocket Science on 12/07/2016 11:46 pm
Well that was remarkably boring... Well done ULA! :)
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Jeff Lerner on 12/08/2016 12:00 am
Boring yes, but that startup BBQ is ALWAYS exciting...:)
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Steven Pietrobon on 12/08/2016 12:04 am
Good coverage. I've always thought the Delta IV is a wonderful launcher! Hey, Steve Pietrobon: when you get time, could you work out what a version of 'single-stick' Delta IV could place into LEO if it had 8 or even 10 GEM solids (whatever fitted) and a stronger upper stage engine, such as the MB-60?

Thanks Matt. Unfortunately, I don't have the time to perform your simulation.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: MATTBLAK on 12/08/2016 12:12 am
Good coverage. I've always thought the Delta IV is a wonderful launcher! Hey, Steve Pietrobon: when you get time, could you work out what a version of 'single-stick' Delta IV could place into LEO if it had 8 or even 10 GEM solids (whatever fitted) and a stronger upper stage engine, such as the MB-60?

Thanks Matt. Unfortunately, I don't have the time to perform your simulation.
Heh! That's fine - absolutely no urgency. Some other time in a more appropriate thread, perhaps. :) I got 23 metric tons to 28.5 degree LEO - about the same as early versions of Delta IV-Heavy. But the upper stage would need 2x RL-10s or 1x MB-60 to get to this amount. And better than that with aluminium/lithium structures, densified propellants and stretched upper stage propellant tanks. About 28 tons.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Jim on 12/08/2016 01:21 am
Yes; 8x then - the routing of propellant lines on the outside of the corestage would probably preclude more than 8, just as the Atlas V can only have 5x solids in total.)

Pad crane and TSM's prevent adding more than 8
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: catdlr on 12/08/2016 03:18 am
Delta IV WGS-8 Launch Highlights

United Launch Alliance

Published on Dec 7, 2016
A United Launch Alliance (ULA) Delta IV rocket carrying the eighth installment of the Wideband Global SATCOM (WGS) satellite for the United States Air Force lifts off from Space Launch Complex-37. This was ULA’s 11th launch in 2016 and the 114th successful launch since the company was formed in December 2006. WGS satellites are an important element of a new high-capacity satellite communications system providing enhanced communications capability to our troops in the field.

https://www.youtube.com/watch?v=f_qOT7DQows?t=001

https://www.youtube.com/watch?v=f_qOT7DQows
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: catdlr on 12/08/2016 03:19 am
Drone View Delta IV WGS8 Rocket Launch High Above Cocoa Beach

Cocoa Beach 365

Published on Dec 7, 2016
The night launch of the Wideband Global SATCOM 8 aboard a United Launch Alliance Delta IV rocket as seen from high above the beach in Cocoa Beach, Florida by drone. Filmed 12/7/216 with a Yuneec Q500 Typhoon. Audio recorded on the beach by my iPhone.

https://www.youtube.com/watch?v=FZ9RFwO5uI0?t=001

https://www.youtube.com/watch?v=FZ9RFwO5uI0
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: catdlr on 12/08/2016 03:20 am
Full Launch Coverage

Delta IV WGS-8 Live Launch Coverage

ULA's live coverage of the eighth Wideband Global SATOM-8 (WGS-8) mission for the U.S. Air Force.

https://www.youtube.com/watch?v=C7RD-u2g6Wg?t=001

https://www.youtube.com/watch?v=C7RD-u2g6Wg
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Lar on 12/08/2016 03:30 am
Congrats to ULA for making it look easy, as usual.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: dawei on 12/08/2016 05:16 am
Thanks for the coverage.  Anybody know details on the deorbit burn for the second stage?
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Star One on 12/08/2016 06:26 am
Now that WGS-8 is in orbit, only four more single-stick Delta IVs remain: WGS-9, WGS-10, GPS III-1, and NROL-47. After these missions are launched over the next three years, the Heavy version will only remain as needed for national security payloads.

Isn't it more accurate to say will remain available as needed by government payloads being as not all the remaining flights of the Heavy are for national security.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: jacqmans on 12/08/2016 10:31 am
45th SW supports successful Delta IV WGS-8 launch

By 45th Space Wing Public Affairs

CAPE CANAVERAL AIR FORCE STATION, Fla. – The 45th Space Wing supported United Launch Alliance’s successful launch of the WGS-8 spacecraft aboard a ULA Delta IV rocket from Space Launch Complex 37 here December 7 at 6:53 p.m. ET.

The ULA Delta IV rocket is carrying the Air Force’s eighth Wideband Global SATCOM communication spacecraft. WGS provides anytime, anywhere communication for soldiers, sailors, airmen, Marines, and international partners through broadcast, multicast, and point-to-point connections. The WGS constellation is the highest-capacity military communications system in the U.S. Department of Defense arsenal. WGS supports a wide variety of missions for Combatant Commanders around the world to perform missions, from search and rescue efforts to military operations.

According to Brig. Gen. Wayne Monteith, 45th Space Wing commander and mission Launch Decision Authority, this launch is the culmination of many long hours and hard work by the entire mission team.

“Thanks to the astounding commitment, focus on the mission, and teamwork the men and women of the 45th Space Wing share with our mission partners at SMC and ULA, we successfully launched the next satellite in the WGS constellation,” he said.  “This mission demonstrates the Air Force’s commitment to deliver secure and reliable satellite communications around the globe to U.S. forces and our allies.  It also once again showcases why the 45th Space Wing is the ‘World's Premiere Gateway to Space.’”
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: jacqmans on 12/08/2016 10:31 am
United Launch Alliance Successfully Launches WGS-8 Mission for the U.S. Air Force

Delta IV WGS-8 Mission Overview

Cape Canaveral Air Force Station, Fla., (Dec. 7, 2016) – A United Launch Alliance (ULA) Delta IV rocket carrying the eighth installment of the Wideband Global SATCOM (WGS) satellite for the United States Air Force lifted off from Space Launch Complex-37 Dec. 7 at 6:53 p.m. EDT. This is ULA’s 11th launch in 2016 and the 114th successful launch since the company was formed in December 2006.

“Thank you to the U.S. Air Force and industry team whose flawless execution enabled today’s successful launch of the WGS-8 mission,” said Laura Maginnis, ULA vice president of Custom Services. “Last week ULA celebrated our anniversary and 10 years of 100% mission success. This evening’s launch epitomizes why our customers continue to entrust ULA to deliver our nation’s most crucial space capabilities.”

This mission was launched aboard a Delta IV Medium+ (5, 4) configuration Evolved Expendable Launch Vehicle (EELV) powered by one common booster core and four solid rocket motors built by Orbital ATK. The common booster core was powered by an RS-68A liquid hydrogen/liquid oxygen engine producing 705,250 pounds of thrust at sea level. A single RL10B-2 liquid hydrogen/liquid oxygen engine powered the second stage. The booster and upper stage engines are both built by Aerojet Rocketdyne. ULA constructed the Delta IV Medium+ (5,4) launch vehicle in Decatur, Alabama.

WGS-8, the second Block II Follow-on satellite, supports communications links in the X-band and Ka-band spectra. The WGS-8 satellite will be able filter and downlink up to 8.088 GHz of bandwidth. WGS satellites are an important element of a new high-capacity satellite communications system providing enhanced communications capability to our troops in the field.

The EELV program was established by the U.S. Air Force to provide assured access to space for Department of Defense and other government payloads. The commercially developed EELV program supports the full range of government mission requirements, while delivering on schedule and providing significant cost savings over the heritage launch systems.

With more than a century of combined heritage, United Launch Alliance is the nation’s most experienced and reliable launch service provider. ULA has successfully delivered more than 110 satellites to orbit that provide critical capabilities for troops in the field, aid meteorologists in tracking severe weather, enable personal device-based GPS navigation and unlock the mysteries of our solar system.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Prober on 12/08/2016 11:20 am
Unfortunate twitter handle with a winning answer! ;D


stays away from twitter, what were the questions?

Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Prober on 12/08/2016 11:25 am
T+32 minutes, 34 seconds. SECO-2 confirmed.

The RL-10B-2 engine has officially shut down, ending tonight's powered flight. Separation of WGS-8 will occur 9 minutes and 10 seconds after SECO-2.


Ok Zach how many RL-10's are left in the stockpile ?


It's today's question  :)
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/08/2016 12:06 pm
T+32 minutes, 34 seconds. SECO-2 confirmed.

The RL-10B-2 engine has officially shut down, ending tonight's powered flight. Separation of WGS-8 will occur 9 minutes and 10 seconds after SECO-2.


Ok Zach how many RL-10's are left in the stockpile ?


It's today's question  :)

I have no clue. Sorry.  ???
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: MarekCyzio on 12/08/2016 01:40 pm
A bit late - yesterday's launch view from Cape Canaveral beach.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Newton_V on 12/08/2016 02:52 pm
Thanks for the coverage.  Anybody know details on the deorbit burn for the second stage?

Worked fine.  Perigee altitude was < -200 km.  With the apogee altitude, didn't reenter until early this morning.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: jacqmans on 12/09/2016 10:41 am
Orbital ATK Products From Across the Country Support ULA Delta IV Launch of WGS-8 Spacecraft


WGS-8 Will Improve Tactical Communications Capability for U.S. and Allied Forces


(Dulles, Virginia 8 December 2016) – Orbital ATK (NYSE: OA), a global leader in aerospace and defense technologies, provided propulsion, composite and spacecraft technologies to enable the successful launch of both the United Launch Alliance (ULA) Delta IV rocket and the eighth Wideband Global SATCOM (WGS-8) satellite that was launched yesterday from Cape Canaveral Air Force Station, Florida.

“Orbital ATK’s propulsion and composite structures on the Delta IV performed very well, and soon the company’s space components on the WGS-8 satellite will have the opportunity to do their jobs as well,” said Scott Lehr, President of Orbital ATK’s Flight Systems Group. “A launch like this one clearly demonstrates the breadth of our product lines in the launch and satellite sectors.”

Both the satellite and Delta IV launch vehicle use cutting-edge technologies from multiple Orbital ATK facilities. For the WGS-8 satellite, Orbital ATK produced both loop heat pipes and standard heat pipes, which provide payload, spacecraft bus and battery thermal management, at its Beltsville, Maryland, facility. Additionally, Orbital ATK manufactured the payload pallet boom tubes at its Magna, Utah, location and the payload module at its San Diego, California, site.

For the Delta IV rocket, Orbital ATK provided four 60-inch diameter Graphite Epoxy Motors (GEM-60). The 53-foot-long solid rocket boosters burned for 90 seconds and provided more than 1.1 million pounds of thrust, or the equivalent of 17 747 jet engines running at full throttle. Orbital ATK produced the solid rocket motors at its Magna, Utah, facility, where it has manufactured 82 GEM-60s in support of the 34 Delta IV launches since the initial flight in 2002.

In addition to the GEM-60 propulsion, Orbital ATK supplied a combined thirteen Delta IV and GEM-60 key composite structures, which provide lower weight and higher performance. The largest composite structures are four to five meters in diameter, range from one to fourteen meters in length, and are produced using either advanced wet winding or hand layup, machining and inspection techniques at Orbital ATK’s manufacturing facilities in Iuka, Mississippi, and Clearfield, Utah.

Orbital ATK also manufactured the propellant tank for the Delta IV upper stage roll control system at the company’s Commerce, California, facility, and it designed and manufactured the nozzles for Delta IV's RS-68A liquid engine and GEM-60 solid motors at its Promontory, Utah, facility. Orbital ATK also designed and produced the nozzle's thermal protection material, which is capable of shielding the nozzle from the extreme heat of launch, when external temperatures can exceed 4,000 degrees Fahrenheit.

The WGS-8 satellite is part of a larger system that increases military communications capabilities for U.S. and allied forces deployed worldwide. As the backbone of the U.S. military's global satellite communications, WGS provides flexible, high-capacity communications for the Nation's warfighters through procurement and operation of the satellite constellation and the associated control systems. WGS provides worldwide flexible, high data rate and long haul communications for marines, soldiers, sailors, airmen, the White House Communication Agency, the US State Department, international partners, and other special users.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Chris Bergin on 12/09/2016 06:32 pm
A bit late - yesterday's launch view from Cape Canaveral beach.


Epic! (And I nearly missed this!) Updated William's article as that's a lead image if ever there was one! :)
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: catdlr on 12/09/2016 08:44 pm
UP CLOSE Delta IV / WGS-8 Launch Pad Remote Camera Video

Video Credit: Matthew Travis / Zero-G News

https://www.youtube.com/watch?v=BHap2G-i85w?t=001

https://www.youtube.com/watch?v=BHap2G-i85w
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: jcm on 12/10/2016 01:37 am
Thanks for the coverage.  Anybody know details on the deorbit burn for the second stage?

Worked fine.  Perigee altitude was < -200 km.  With the apogee altitude, didn't reenter until early this morning.

I estimate about 1100 UTC.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: wsl2005 on 12/18/2016 03:10 am
The USAF launch patch for WGS 8 shows circling sharks for “The Sharks” nickname of the 45th Space Wing. The sharks are swimming circles around insignias for key mission participants. The Sharks insignia derives from the teeth earlier painted on the nose of all 14th Air Force aircraft and later launch vehicle. (USAF image)
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: wsl2005 on 12/26/2016 05:44 am
The orbit data is extracted from the following two-line orbital elements,

1 41879U 16075A   16358.21353247 0.00000000  00000-0  00000-0 0    01
2 41879   3.6003  66.5855 0199996 312.3102   7.7135  1.00270000    06
Epoch (UTC):   23 December 2016 05:07:29
Eccentricity:   0.0199996
inclination:   3.6003°
perigee height:   34943 km
apogee height:   36630 km
right ascension of ascending node:   66.5855°
argument of perigee:   312.3102°
revolutions per day:   1.00270000
mean anomaly at epoch:   7.7135°
orbit number at epoch:   0
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: WHAP on 12/27/2016 12:53 am
T+32 minutes, 34 seconds. SECO-2 confirmed.

The RL-10B-2 engine has officially shut down, ending tonight's powered flight. Separation of WGS-8 will occur 9 minutes and 10 seconds after SECO-2.


Ok Zach how many RL-10's are left in the stockpile ?


It's today's question  :)

I have no clue. Sorry.  ???

Nine more B-2's to fly.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: russianhalo117 on 12/27/2016 02:36 am
T+32 minutes, 34 seconds. SECO-2 confirmed.

The RL-10B-2 engine has officially shut down, ending tonight's powered flight. Separation of WGS-8 will occur 9 minutes and 10 seconds after SECO-2.


Ok Zach how many RL-10's are left in the stockpile ?


It's today's question  :)

I have no clue. Sorry.  ???

Nine more B-2's to fly.
So RL-10C-2's from then on if D-IVH flies longer than currently planned. Correct???
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: ZachS09 on 12/27/2016 04:46 am
T+32 minutes, 34 seconds. SECO-2 confirmed.

The RL-10B-2 engine has officially shut down, ending tonight's powered flight. Separation of WGS-8 will occur 9 minutes and 10 seconds after SECO-2.


Ok Zach how many RL-10's are left in the stockpile ?


It's today's question  :)

I have no clue. Sorry.  ???

Nine more B-2's to fly.

How do you know there are nine RL-10B-2 engines left? Is there a source for this?
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: russianhalo117 on 12/27/2016 02:17 pm
T+32 minutes, 34 seconds. SECO-2 confirmed.
The RL-10B-2 engine has officially shut down, ending tonight's powered flight. Separation of WGS-8 will occur 9 minutes and 10 seconds after SECO-2.
Ok Zach how many RL-10's are left in the stockpile ?
It's today's question  :)
I have no clue. Sorry.  ???
Nine more B-2's to fly.
How do you know there are nine RL-10B-2 engines left? Is there a source for this?
Barring a detection error, there are 11 DIV family launches left to fly. I know that a large bunch of RL-10B-2's were handed over for conversions to RL-10C-1's and the plan was convert a few RL-10C-1's to RL-10C-2's for baseline testing ahead of dev and qual testing of the new RL-10C-3 engine config for NASA's SLS EUS.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Chris Bergin on 04/12/2017 02:33 pm
Presser:

SSC Space US Supports Boeing’s Launch and Early Orbit Checkout of WGS-8

 

Horsham, PA, (12 April, 2017) – On 3 April 2017, SSC Space US, the U.S. subsidiary of SSC, successfully concluded its support of Boeing’s launch and early orbit checkout of the eighth Wideband Global SATCOM (WGS-8) satellite.   

 

Boeing leveraged SSC’s multi-band satellite ground network services to support its WGS-8 orbit raising and system checkout process prior to transferring command and control to the 3rd Space Operations Squadron, at Schriever AFB.

 

During the three month launch and early orbit checkout period, SSC ground stations in Hawaii, Alaska, Chile and Western Australia used Satellite Ground Link System (SGLS) and Unified S-Band (USB) frequency bands to meet all launch and satellite checkout communications requirements.

 

“SSC Space US has supported launch and early orbit checkout operations for all eight WGS satellites and the Boeing/SSC partnership will continue in the future with the WGS-9 and WGS-10 missions.  SSC is proud to be in a long-term relationship with Boeing on this important mission providing safe and secure critical communications,” said Erik Eliasen, Vice President of National Security Space Programs for SSC Space US.

 

About the Swedish Space Corporation (SSC)
As a global provider of advanced space services, SSC enables governmental agencies, companies and other commercial or research institutes to help Earth benefit from space. Built on decades of experience, SSC offers proven expertise in satellite management and engineering services, space technology and launch services for sounding rockets and balloons. SSC offers a complete portfolio of ground segment services to support space missions. Through SSC’s worldwide network of multi-mission satellite stations, SSC can provide unequalled Earth coverage for a large variety of missions in most orbits. www.sscspace.com
Title: Re: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 23:53 UTC - Canaveral SLC-37B
Post by: Lars-J on 08/11/2017 11:53 pm
Quote
Orbital ATK ‏@OrbitalATK 9m9 minutes ago

Orbital ATK team at the launch pad yesterday preparing for today’s #DeltaIV launch of #WGS8. @ulalaunch

https://twitter.com/OrbitalATK/status/806474511587622912 (https://twitter.com/OrbitalATK/status/806474511587622912)

I ran across the image in the post I am quoting, and I have a question about the Delta IV M+ SRBs... Why is one nozzle more protected than the other? (see red arrows in image) They both seem identical otherwise, and aren't they separated at the same time? Thanks... 
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Jim on 08/12/2017 12:21 am
One is fixed and the other gimbals
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: russianhalo117 on 08/12/2017 12:24 am
Quote
Orbital ATK ‏@OrbitalATK 9m9 minutes ago

Orbital ATK team at the launch pad yesterday preparing for today’s #DeltaIV launch of #WGS8. @ulalaunch

https://twitter.com/OrbitalATK/status/806474511587622912 (https://twitter.com/OrbitalATK/status/806474511587622912)

I ran across the image in the post I am quoting, and I have a question about the Delta IV M+ SRBs... Why is one nozzle more protected than the other? (see red arrows in image) They both seem identical otherwise, and aren't they separated at the same time? Thanks... 
two are are fixed nozzle and two vectorable nozzle

Sources: 2016 OA Motor Catalog (Section D45 or Page 57 of 163) and Gunter's Space Page (http://space.skyrocket.de/doc_eng/gem-60.htm)
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Lars-J on 08/12/2017 12:48 am
One is fixed and the other gimbals

Thanks!  :)
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: LouScheffer on 08/12/2017 01:28 am
I ran across the image in the post I am quoting, and I have a question about the Delta IV M+ SRBs... Why is one nozzle more protected than the other? (see red arrows in image) They both seem identical otherwise, and aren't they separated at the same time? Thanks... 
two are are fixed nozzle and two vectorable nozzle

Sources: 2016 OA Motor Catalog (Section D45 or Page 57 of 163) and Gunter's Space Page (http://space.skyrocket.de/doc_eng/gem-60.htm)
They must REALLY need the vectoring.  Compared to the fixed thrust model, the vectoring one is 1000 lbs (450 kg) heavier, slightly less ISP, and surely more expensive and less reliable.  Atlas, I believe, does not need vectoring on its solids.  So why does Delta IV?
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: Newton_V on 08/12/2017 01:55 am
I ran across the image in the post I am quoting, and I have a question about the Delta IV M+ SRBs... Why is one nozzle more protected than the other? (see red arrows in image) They both seem identical otherwise, and aren't they separated at the same time? Thanks... 
two are are fixed nozzle and two vectorable nozzle

Sources: 2016 OA Motor Catalog (Section D45 or Page 57 of 163) and Gunter's Space Page (http://space.skyrocket.de/doc_eng/gem-60.htm)
They must REALLY need the vectoring.  Compared to the fixed thrust model, the vectoring one is 1000 lbs (450 kg) heavier, slightly less ISP, and surely more expensive and less reliable.  Atlas, I believe, does not need vectoring on its solids.  So why does Delta IV?
For roll control.  RD-180 has 2 nozzles.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: LouScheffer on 08/12/2017 02:10 am
I ran across the image in the post I am quoting, and I have a question about the Delta IV M+ SRBs... Why is one nozzle more protected than the other? (see red arrows in image) They both seem identical otherwise, and aren't they separated at the same time? Thanks... 
two are are fixed nozzle and two vectorable nozzle

Sources: 2016 OA Motor Catalog (Section D45 or Page 57 of 163) and Gunter's Space Page (http://space.skyrocket.de/doc_eng/gem-60.htm)
They must REALLY need the vectoring.  Compared to the fixed thrust model, the vectoring one is 1000 lbs (450 kg) heavier, slightly less ISP, and surely more expensive and less reliable.  Atlas, I believe, does not need vectoring on its solids.  So why does Delta IV?
For roll control.  RD-180 has 2 nozzles.
But Delta-IV can launch without solids, so it has built-in roll control (turbo-pump exhaust).  I'd then guess this does not have enough control authority to cover the torque potentially induced by thrust imbalances in non-vectoring solids.
Title: Re: LIVE: Delta IV-M+(5,4) - WGS-8 - December 7, 2016 (23:53 UTC)
Post by: russianhalo117 on 08/12/2017 07:22 pm
I ran across the image in the post I am quoting, and I have a question about the Delta IV M+ SRBs... Why is one nozzle more protected than the other? (see red arrows in image) They both seem identical otherwise, and aren't they separated at the same time? Thanks... 
two are are fixed nozzle and two vectorable nozzle

Sources: 2016 OA Motor Catalog (Section D45 or Page 57 of 163) and Gunter's Space Page (http://space.skyrocket.de/doc_eng/gem-60.htm)
They must REALLY need the vectoring.  Compared to the fixed thrust model, the vectoring one is 1000 lbs (450 kg) heavier, slightly less ISP, and surely more expensive and less reliable.  Atlas, I believe, does not need vectoring on its solids.  So why does Delta IV?
For roll control.  RD-180 has 2 nozzles.
But Delta-IV can launch without solids, so it has built-in roll control (turbo-pump exhaust).  I'd then guess this does not have enough control authority to cover the torque potentially induced by thrust imbalances in non-vectoring solids.
AFAIK RS-68 gimbal is inhibited until just before SRM tail off.