Author Topic: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014  (Read 56322 times)

Offline beidou

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LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« on: 05/17/2014 04:00 pm »
4th GPS launch in 2014.

William Graham's excellent feature article for this mission:

http://www.nasaspaceflight.com/2014/10/ula-atlas-v-gps-iif-8-launch/

Launch Coverage Sponsored by ATK:
« Last Edit: 10/29/2014 01:42 pm by Chris Bergin »

Offline beidou

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Re: Atlas V 401 - GPS IIF-8 - October, 2014
« Reply #1 on: 08/02/2014 12:54 pm »

GPS IIF-8, slated for launch during the fourth quarter, arrived at Cape Canaveral on July 16 to undergo final launch preparations.
« Last Edit: 09/09/2014 11:32 am by beidou »

Offline Galactic Penguin SST

Re: Atlas V 401 - GPS IIF-8 - October, 2014
« Reply #2 on: 09/09/2014 06:04 am »
According to http://www.spaceflightnow.com/tracking/index.html the 50th Atlas V is scheduled to liftoff at 1:19 - 1:37 pm Eastern on October 29 (17:19 - 17:37 UTC).  ;)
Astronomy & spaceflight geek penguin. In a relationship w/ Space Shuttle Discovery. Current Priority: Chasing the Chinese Spaceflight Wonder Egg & A Certain Chinese Mars Rover

Offline vapour_nudge

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Re: Atlas V 401 - GPS IIF-8 - October, 2014
« Reply #3 on: 09/09/2014 12:38 pm »
It should be the 50th Atlas V launch. Regardless of fan clubs or not, it's shown itself to be a very reliable launch vehicle that launches on time more often than not. All the best to them.

Offline Kim Keller

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Re: Atlas V 401 - GPS IIF-8 - October, 2014
« Reply #4 on: 09/09/2014 01:32 pm »
It should be the 50th Atlas V launch. Regardless of fan clubs or not, it's shown itself to be a very reliable launch vehicle that launches on time more often than not. All the best to them.

By coincidence the tail number of this mission's Atlas is AV-050.

Offline WHAP

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Re: Atlas V 401 - GPS IIF-8 - October, 2014
« Reply #5 on: 09/10/2014 03:51 am »

It should be the 50th Atlas V launch. Regardless of fan clubs or not, it's shown itself to be a very reliable launch vehicle that launches on time more often than not. All the best to them.

By coincidence the tail number of this mission's Atlas is AV-050.

Without an emoticon, people will think you are serious. 
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Offline Skyrocket

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Re: Atlas V 401 - GPS IIF-8 - October, 2014
« Reply #6 on: 09/10/2014 07:53 am »

It should be the 50th Atlas V launch. Regardless of fan clubs or not, it's shown itself to be a very reliable launch vehicle that launches on time more often than not. All the best to them.

By coincidence the tail number of this mission's Atlas is AV-050.

Without an emoticon, people will think you are serious. 

As Atlas-V tail numbers are not sequential to the launch order, it is indeed by coincidence. See Atlas-V launch list for serial numbers: http://space.skyrocket.de/doc_lau/atlas-5.htm

Offline Kim Keller

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Re: Atlas V 401 - GPS IIF-8 - October, 2014
« Reply #7 on: 09/10/2014 02:02 pm »

It should be the 50th Atlas V launch. Regardless of fan clubs or not, it's shown itself to be a very reliable launch vehicle that launches on time more often than not. All the best to them.

By coincidence the tail number of this mission's Atlas is AV-050.

Without an emoticon, people will think you are serious. 

As Atlas-V tail numbers are not sequential to the launch order, it is indeed by coincidence. See Atlas-V launch list for serial numbers: http://space.skyrocket.de/doc_lau/atlas-5.htm

Correct. AV-050 was originally assigned to MMS, now launching next spring. Delays to that payload, originally scheduled for this fall, prompted ULA to shuffle boosters around. And, AV-048 launched before AV-047.

Offline Galactic Penguin SST

Re: Atlas V 401 - GPS IIF-8 - October, 2014
« Reply #8 on: 09/20/2014 08:50 am »
Launch time has been slightly refined to 1:21 - 1:39 pm Eastern.

Someone may double check this, but it seems that this one is heading to orbital plane E - the last of 6 planes that has yet to receive a block IIF satellite.  ::)
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Offline jacqmans

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Re: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #9 on: 09/20/2014 01:51 pm »
Atlas V to Launch GPS IIF-8 on Oct. 29

Atlas V GPS IIF-8 Mission ArtworkRocket/Payload:An Atlas V 401 will launch the GPS IIF-8 mission for the U.S. Air Force.

Date/Site/Launch Time: Wednesday, Oct. 29, 2014, from Space Launch Complex (SLC)-41 at Cape Canaveral Air Force Station, Fla. The 18-minute launch window opens at 1:21 p.m. EDT.

Viewing the Launch by Webcast: The live webcast will begin at 1:01 p.m. EDT.

Mission Description: GPS satellites serve and protect our warfighters by providing navigational assistance for U.S. military operations on land, at sea, and in the air. Civilian users around the world also use and depend on GPS for highly accurate time, location, and velocity information.

GPS IIF-8 is one of the next-generation GPS satellites, incorporating various improvements to provide greater accuracy, increased signals, and enhanced performance for users.

Launch Notes: GPS IIF-8 will be ULA’s fourth GPS launch of 2014 and the 12th of the year. The mission will mark ULA’s 89th mission launched since the company was founded in 2006.
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 and twitter.com/ulalaunch; look for the #GPSIIF8 hashtag.
« Last Edit: 10/04/2014 02:24 pm by jacqmans »
Jacques :-)

Offline macpacheco

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Re: Atlas V 401 - GPS IIF-8 - October, 2014
« Reply #10 on: 09/22/2014 01:27 pm »
Launch time has been slightly refined to 1:21 - 1:39 pm Eastern.

Someone may double check this, but it seems that this one is heading to orbital plane E - the last of 6 planes that has yet to receive a block IIF satellite.  ::)

Plane E has 6 satellites with an ideal 3 pair layout (within the current layout).
And the IIA birds on plane E are still operating very well (PRN10=70cm URE and PRN32=50cm URE).
There's no requirement to having 6 birds on an orbital plane today, so plane E might as well end up getting IIF-12 or IIF-11/12.
I would prefer to add birds to the planes with just 4 birds (bare minimum). Those are planes B and C.
Of those, plane B has just 2 L2C/M-Code capable birds. plane C has 3.
So logic would suggest adding to plane B.

There's no problem adding two IIIA later instead, leaving some plane without any IIF.

Hopefully PRN8 / SVN38 will be decommissioned to open up room in the almanac. It's been running at 140cm URE, twice as much error as the 90% best of the constellation. And its flying a triplet, so it can be gone without any loss.

But I'm thinking freely without any GPS constellation sustainment master plan... Some overriding consideration might exist.
USAF is amazingly transparent about it's GPS plans, but we need to keep in mind that unless otherwise decided everything internal about GPS is classified.

Train of though... :
Highest priority is keeping up with 24+3 constellation requirements (that means some orbital planes should have 5 birds minimum, some 4 birds minimum).
Second priority is being ready for M-Code IOC/FOC.
Preparations for L5 IOC/FOC comes later (number of IIF+future IIIA).
The E plane has two IIA satellites which will have to be replaced.
What matters is number of IIR-M + IIF for M-Code/L2C IOC/FOC. 3=ready for IOC, 4=ready for FOC
Plane A has 4
Plane B has 2
Plane C has 3
Plane D has 2
Plane E has 1
Plane F has 2
Another view is number of IIR+IIRM+IIF (aka what would happen if all IIA birds were deactivated tomorrow, each new IIF launched forces an active IIA into residual due to almanac limitations):
Plane A has 4
Plane B has 4
Plane C has 4
Plane D has 5
Plane E has 4
Plane F has 5
« Last Edit: 09/22/2014 01:30 pm by macpacheco »
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Offline grythumn

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Re: Atlas V 401 - GPS IIF-8 - October, 2014
« Reply #11 on: 09/24/2014 08:15 pm »
But I'm thinking freely without any GPS constellation sustainment master plan... Some overriding consideration might exist.
USAF is amazingly transparent about it's GPS plans, but we need to keep in mind that unless otherwise decided everything internal about GPS is classified.

Train of though... :
Highest priority is keeping up with 24+3 constellation requirements (that means some orbital planes should have 5 birds minimum, some 4 birds minimum).
Second priority is being ready for M-Code IOC/FOC.
Preparations for L5 IOC/FOC comes later (number of IIF+future IIIA).
The E plane has two IIA satellites which will have to be replaced.

We ought to have a general GPS thread somewhere instead of having this discussion piecemeal in the launch threads. :)

Did you read the interview with Colonel Cooley in GPS World? There's an interesting quote in there about getting to 18 M-Code capable SVs (e.g. IOC) by 2017 to support MGUE. As I think everyone has been saying, this year has been about launching for capability, not just sustainment.

EDIT: Also new to me... GPS III and OCX have been pushed back to the second half of 2016. I knew they weren't making this year, but... :'(

Quote
WBC: The M-code-capable military receiver (MGUE) modules in development have successfully acquired and tracked M-code during live-sky tests, and we have many more tests scheduled. MGUE is expected to begin fielding by 2017, at which point at least 18 M-code-capable GPS satellites are expected to be on orbit, providing global four-in-view coverage of full M-code capabilities.

http://gpsworld.com/latest-words-from-the-acquisition-guru-of-the-worlds-gold-standard-for-pnt/

-Bob
« Last Edit: 09/24/2014 08:52 pm by grythumn »

Offline macpacheco

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Re: Atlas V 401 - GPS IIF-8 - October, 2014
« Reply #12 on: 09/25/2014 07:09 am »
We ought to have a general GPS thread somewhere instead of having this discussion piecemeal in the launch threads. :)

Did you read the interview with Colonel Cooley in GPS World? There's an interesting quote in there about getting to 18 M-Code capable SVs (e.g. IOC) by 2017 to support MGUE. As I think everyone has been saying, this year has been about launching for capability, not just sustainment.

EDIT: Also new to me... GPS III and OCX have been pushed back to the second half of 2016. I knew they weren't making this year, but... :'(

Quote
WBC: The M-code-capable military receiver (MGUE) modules in development have successfully acquired and tracked M-code during live-sky tests, and we have many more tests scheduled. MGUE is expected to begin fielding by 2017, at which point at least 18 M-code-capable GPS satellites are expected to be on orbit, providing global four-in-view coverage of full M-code capabilities.

http://gpsworld.com/latest-words-from-the-acquisition-guru-of-the-worlds-gold-standard-for-pnt/

-Bob
I am exactly focused on finding a balance between preparations for M-Code/L2C IOC (3 capable/properly spaced birds in all 6 orbital planes) with constellation sustainment (before the first IIIA can be launched, all IIA birds will have to be retired, as OCX is needed to control IIIA birds and OCX can`t control IIA birds).
In all likelihood, by IIF-10 the constellation will have 18 operational M-Code capable birds (assuming SVN49 will be used for M-Code only instead of totally in reserve), but the layout will be wrong (will need a few more launches to fill the gaps). With all IIF's in service they are likely able to close all gaps.

At the same time, by 2017 there should be 8 IIR-M, 12IIF, plus some 2 IIIA in service, totaling 22, pretty close to FOC (full operating capability). IIF-8 in 2014, IIF-9/10 in 2015, IIF-11/12 in 2016, IIIA-1/2 in 2017.
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Offline grythumn

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Re: Atlas V 401 - GPS IIF-8 - October, 2014
« Reply #13 on: 09/25/2014 05:36 pm »
I am exactly focused on finding a balance between preparations for M-Code/L2C IOC (3 capable/properly spaced birds in all 6 orbital planes) with constellation sustainment (before the first IIIA can be launched, all IIA birds will have to be retired, as OCX is needed to control IIIA birds and OCX can`t control IIA birds).

Didn't the Air Force announce a contract to get the disposal software to control the IIA SVs after the OCX transition? I *think* I remember something about that... <few minutes of googling later>

Hmm. From 2012:

Quote
The solution announced during the week at the National Space Symposium (NSS, April 16–19) by General William Shelton, the four-star chief of Air Force Space Command, is to fund the current LADO operator, Braxton Technologies, to build in this support for the IIAs. This is significant for several reasons: One, of course, is that it solves the IIA C2 issues, it does it now, and at a relatively modest cost, and it utilizes more of the capabilities of the Braxton Technologies’ LADO software. Additionally it provides a true backup capability for assets on orbit that become increasingly valuable as the number of available launch slots for GPS decreases.

http://gpsworld.com/the-system-gps-iii-endures-bad-press-iias-an-ocx-concern/

Has anyone heard anything about this since?

-Bob

Offline macpacheco

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Re: Atlas V 401 - GPS IIF-8 - October, 2014
« Reply #14 on: 09/25/2014 07:55 pm »
I am exactly focused on finding a balance between preparations for M-Code/L2C IOC (3 capable/properly spaced birds in all 6 orbital planes) with constellation sustainment (before the first IIIA can be launched, all IIA birds will have to be retired, as OCX is needed to control IIIA birds and OCX can`t control IIA birds).

Didn't the Air Force announce a contract to get the disposal software to control the IIA SVs after the OCX transition? I *think* I remember something about that... <few minutes of googling later>

Hmm. From 2012:

Quote
The solution announced during the week at the National Space Symposium (NSS, April 16–19) by General William Shelton, the four-star chief of Air Force Space Command, is to fund the current LADO operator, Braxton Technologies, to build in this support for the IIAs. This is significant for several reasons: One, of course, is that it solves the IIA C2 issues, it does it now, and at a relatively modest cost, and it utilizes more of the capabilities of the Braxton Technologies’ LADO software. Additionally it provides a true backup capability for assets on orbit that become increasingly valuable as the number of available launch slots for GPS decreases.

http://gpsworld.com/the-system-gps-iii-endures-bad-press-iias-an-ocx-concern/

Has anyone heard anything about this since?

-Bob
No word on that actually being done. Anyhow... Why on earth would anybody want to keep the capability to use 25 yr old GPS satellites ? Most are on the last atomic clock or last reaction control wheel or the last usable bus.
Its one of those "lets spend some money so we get a feature we probably will never need anyways".
With another 2 IIF launches (and those birds set healthy), all remaining IIA's could simply be retired.
PRN13 being repositioned to PRN26 slot, then PRN26 can be retired (will form a triplet)
PRN4 can be retired right now (forming a triplet)
PRN8 can be retired right now (forming a triplet)
That leaves just PRN10 and PRN32 to be replaced with a IIF (IIF-8 and IIF-9)
The reason USAF leaves triplets doing to job of a pair is just because they can.
It's possible IIF-8 and/or IIF-9 will be launched into a IIR slot and the IIR will be repositioned to PRN10/PRN32 then that IIA can be retired.
It never ceases to amaze me how little the US govt cares about spending a dozen million dollars. Pocket change, since it doesn't come from the pocket of those that make the decisions.
« Last Edit: 09/25/2014 07:56 pm by macpacheco »
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Offline Jim

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Re: Atlas V 401 - GPS IIF-8 - October, 2014
« Reply #15 on: 09/25/2014 09:26 pm »
It never ceases to amaze me how little the US govt cares about spending a dozen million dollars. Pocket change, since it doesn't come from the pocket of those that make the decisions.

Because it saves money in the long run.

Offline macpacheco

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Re: Atlas V 401 - GPS IIF-8 - October, 2014
« Reply #16 on: 09/26/2014 06:22 am »
It never ceases to amaze me how little the US govt cares about spending a dozen million dollars. Pocket change, since it doesn't come from the pocket of those that make the decisions.

Because it saves money in the long run.
No it doesn't. It would save money if the launch tempo were slowed down, reducing GPS IIIA launch / manufacturing expenditures, but that's not the plan.
Even if there were a 5 year gap between launching the last IIF and the first IIIA, there's no need to use GPS IIA birds, since the constellation will have 4 satellites in excess of its performance requirements (31 instead of 27).
One of the major GPS constellation goals is reaching L5 FOC ASAP, so civilian users can stop using semi codeless methods, so the air force can do whatever they feel is better for military needs, while today they are stuck with some restrictions due to semi codeless (civilian usage of P(Y) code). That requires 12 IIF + 12 IIIA operational satellites minimum (L5 capable). Hence even with all IIA fully retired, the constellation would have 12 IIIA + 12 IIF + 7 IIR-M + 12 IIR = 43 satellites. Or enough satellites that all IIR could all be set a residual and have same or better constellation geometry as today.
Right now only 5 IIA birds are still in operation, but in a year all of them won't be performing any useful work in the constellation.
Plus the IIA residual plan is based on a contingency that newer satellites might fail, yet that has never happened (a GPS satellite fail while in service). Not only are GPS satellites living 150+% over their stated mission life, but also, USAF 2nd SOPS have a spotless record of always detecting when there is a significant risk of a GPS bird failing in the next future, and scheduling a launch to replace it.
« Last Edit: 09/26/2014 06:39 am by macpacheco »
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Offline Jim

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Re: Atlas V 401 - GPS IIF-8 - October, 2014
« Reply #17 on: 09/26/2014 02:29 pm »
It never ceases to amaze me how little the US govt cares about spending a dozen million dollars. Pocket change, since it doesn't come from the pocket of those that make the decisions.

Because it saves money in the long run.
No it doesn't.

You don't have the information nor do you know enough about the requirements to make such a claim and your past claims have been grossly wrong.

Offline macpacheco

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Re: Atlas V 401 - GPS IIF-8 - October, 2014
« Reply #18 on: 09/26/2014 03:09 pm »
It never ceases to amaze me how little the US govt cares about spending a dozen million dollars. Pocket change, since it doesn't come from the pocket of those that make the decisions.

Because it saves money in the long run.
No it doesn't.

You don't have the information nor do you know enough about the requirements to make such a claim and your past claims have been grossly wrong.
You understand a LOT about launch systems. However you have yet to show understanding of the many GPS segments and their components. I have studied this stuff. It's not rocket science. I don't need to convince you. But you are know not to bother to explain things.
If you disagree with me and care to make a stand, correct my statements. Otherwise, AFAIK you don't know enough about the GPS system to actually impress anybody.
I have my politically charged opinions and hunches, that doesn't make me a crazy person. I don't earn a living from rocketry and space.
My core area of expertise is computing hardware/software and telecommunications. GPS is far closer to computer hardware than rocketry. Its much closer to my alley than you think.
The only good reason for this GPS IIA support for OCX is that the company that proposed it is a smaller shop that USAF wants to throw a bone towards, perhaps they could do for GPS what SpaceX is doing for space launches, reducing cost and having more heart in it. That would actually be a good reason to spend a few dozen million dollars (getting a competent and competitive supplier that can do stuff much more cost effectively than LM or Boeing, also GPS system suppliers).
« Last Edit: 09/26/2014 03:13 pm by macpacheco »
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Offline Jim

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Re: Atlas V 401 - GPS IIF-8 - October, 2014
« Reply #19 on: 09/26/2014 03:56 pm »
1.  You understand a LOT about launch systems. However you have yet to show understanding of the many GPS segments and their components. I have studied this stuff. It's not rocket science. I don't need to convince you. But you are know not to bother to explain things.
If you disagree with me and care to make a stand, correct my statements. Otherwise, AFAIK you don't know enough about the GPS system to actually impress anybody.
2.  I have my politically charged opinions and hunches, that doesn't make me a crazy person. I don't earn a living from rocketry and space.
3.  My core area of expertise is computing hardware/software and telecommunications. GPS is far closer to computer hardware than rocketry. Its much closer to my alley than you think.
4.  The only good reason for this GPS IIA support for OCX is that the company that proposed it is a smaller shop that USAF wants to throw a bone towards, perhaps they could do for GPS what SpaceX is doing for space launches, reducing cost and having more heart in it. That would actually be a good reason to spend a few dozen million dollars (getting a competent and competitive supplier that can do stuff much more cost effectively than LM or Boeing, also GPS system suppliers).

1. I know about spacecraft and constellation maintenance

2.  Ah, yes it does. 

3.  Not when it comes to the spacecraft and requirements.

4. See #2.  Crazy talk like this discredits any real knowledge you may have.

You don't know the real requirements wrt GPS, such as NDS requirements or other unmentioned users to make the claims you do.
« Last Edit: 09/26/2014 03:59 pm by Jim »

Offline macpacheco

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Re: Atlas V 401 - GPS IIF-8 - October, 2014
« Reply #20 on: 09/29/2014 05:57 pm »
Humm, so you probably mean USAF wants to keep IIA birds operational to run NUDET only on them, shutting down NUDET on IIR birds (and GPS payload on IIA birds) to save battery life... That might make some sense.
« Last Edit: 09/29/2014 06:20 pm by macpacheco »
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Offline beidou

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Re: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #21 on: 09/29/2014 06:19 pm »
.
« Last Edit: 10/04/2014 02:25 pm by jacqmans »

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Offline jacqmans

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Re: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #24 on: 10/21/2014 07:36 pm »
Atlas V • October 29, 1:21 pm 

Experience the memorable sights and sounds of the powerful roaring engines of a United Launch Alliance Atlas V rocket. The Atlas V rocket launches the GPS IIF-8 satellite which provides improved accuracy and enhanced performance for GPS users. Learn more about the rocket and the mission.

Launch Viewing

View the launch of the Atlas V rocket from NASA's launch headquarters in three prime locations that feature live launch commentary. Viewing is available at the Visitor Complex in two locations adjacent to Space Shuttle Atlantis.

Launch viewing at the Apollo/Saturn V Center is available on a limited basis. The last bus leaves the Visitor Complex at 11:45 am for the Apollo/Saturn V Center.

Go online to purchase your admission:
https://www.kennedyspacecenter.com/tickets.aspx?utm_source=email&utm_medium=full-list&utm_campaign=KSC20141017_Launch-Alert-Atlas5_Oct29

 
Jacques :-)

Offline averagespacejoe

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Re: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #25 on: 10/23/2014 04:43 am »
Which mission patch is being used for GPS IIF-8? Lately the patches have been interesting

Offline BabaORileyUSA

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Re: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #26 on: 10/23/2014 12:09 pm »
From eBay!

Offline Jim

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Re: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #27 on: 10/23/2014 01:05 pm »
That is the LCSS patch (the spacecraft squadron.   The gator is the give away.
  This is the launch patch drawing.
« Last Edit: 10/23/2014 01:06 pm by Jim »

Offline Colodie

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Re: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #28 on: 10/23/2014 11:03 pm »
Since there was previous discussion of it, SVN-38/PRN-8 will be decommissioned before SVN-69 is set health.

http://gpsworld.com/eighth-gps-iif-set-to-launch-wednesday/

Offline Prober

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Re: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #29 on: 10/25/2014 06:14 pm »
Almost missed this one...time for a bump.

Viewing the Launch by Webcast: The live webcast will begin at 1:01 p.m. EDT.
« Last Edit: 10/25/2014 06:18 pm by Prober »
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Offline Chris Bergin

Re: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #30 on: 10/27/2014 12:44 am »
ULA:

Everything is progressing toward the Air Force’s GPS IIF-8 launch. The mission is set to lift off on a ULA Atlas V rocket on Wednesday, Oct. 29 at 1:21 p.m. EDT from Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. Today’s L-3 forecast shows a 70 percent chance of favorable weather conditions for launch.

Link to the mission book. http://www.ulalaunch.com/uploads/docs/Mission_Booklets/AV/av_gpsiif8_mob.pdf
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Offline edkyle99

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Re: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #31 on: 10/27/2014 03:48 pm »
From the mission book:  11,047 x 141,047 nmi x 55.0 deg (20,459 x 261,219 km x 55.0 deg)?  Really?  Is this correct?

 - Ed Kyle
« Last Edit: 10/27/2014 03:50 pm by edkyle99 »

Offline gwiz

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Re: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #32 on: 10/27/2014 04:07 pm »
Not for the payload, but possibly the Centaur disposal orbit?

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Re: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #33 on: 10/27/2014 04:13 pm »
From the mission book:  11,047 x 141,047 nmi x 55.0 deg (20,459 x 261,219 km x 55.0 deg)?  Really?  Is this correct?

11,047 instead of 141,047.
« Last Edit: 10/27/2014 04:14 pm by anik »

Offline Targeteer

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Re: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #34 on: 10/27/2014 05:37 pm »
From Twitter

ULA ‏@ulalaunch 13m13 minutes ago

ULA Launch Readiness Review is complete; we are GO for #GPSIIF8 launch on #AtlasV! Oct 29 window opens @ 1:21 pm EDT http://bit.ly/gpsiif8
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline Chris Bergin

Re: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #35 on: 10/28/2014 12:07 am »
ULA: The Launch Readiness Review was completed today in preparation for the Air Force’s GPS IIF-8 launch. The mission is set to lift off on a ULA Atlas V rocket on Wednesday, Oct. 29 at 1:21 p.m. EDT from Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. Today’s L-2 forecast continues to show a 70 percent chance of favorable weather conditions for launch.
« Last Edit: 10/28/2014 12:08 am by Chris Bergin »
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Offline Galactic Penguin SST

Re: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #36 on: 10/28/2014 03:03 am »
Payload mate:
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Offline Kim Keller

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Re: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #37 on: 10/28/2014 04:34 pm »
Vehicle is on the pad for RP-1 load.

Offline jacqmans

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Re: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #38 on: 10/28/2014 06:39 pm »
Jacques :-)

Offline Galactic Penguin SST

Re: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #39 on: 10/29/2014 02:49 am »
Oxidizer-rich stage combustion kerosene rocket engine.....  ::)
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Offline Antares

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Re: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #40 on: 10/29/2014 03:01 am »
That was built in the last few years.
If I like something on NSF, it's probably because I know it to be accurate.  Every once in a while, it's just something I agree with.  Facts generally receive the former.

Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #41 on: 10/29/2014 11:07 am »
Moved for live coverage.
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Offline Galactic Penguin SST

Re: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #42 on: 10/29/2014 12:13 pm »
That was built in the last few years.

Yeah, and the RD-180 has a good track record, but turn your head to the RD-170 series and.......(I know that there were other problems on the Zenit that caused some of those failures, but still......)

Anyway here's to a good, beautiful flight in celebration of Atlas V reaching 50 flights!  :)
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Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #43 on: 10/29/2014 01:42 pm »
William Graham's excellent feature article for this mission:

http://www.nasaspaceflight.com/2014/10/ula-atlas-v-gps-iif-8-launch/
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Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #44 on: 10/29/2014 02:53 pm »
90 mins to launch.
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Offline Hunt101

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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #45 on: 10/29/2014 03:03 pm »
William Graham's excellent feature article for this mission:

http://www.nasaspaceflight.com/2014/10/ula-atlas-v-gps-iif-8-launch/

William is my favorite writer. Another wonderful article.

Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #46 on: 10/29/2014 03:19 pm »
ULA:
Everything is progressing toward the launch of the ULA Atlas V rocket with the U.S. Air Force’s GPS IIF-8 satellite.

The countdown is underway and the team is not working any technical issues at this time.
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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #47 on: 10/29/2014 03:32 pm »
ULA:
Everything is progressing toward the launch of the ULA Atlas V rocket with the U.S. Air Force’s GPS IIF-8 satellite.

The countdown is underway and the team is not working any technical issues at this time.
« Last Edit: 10/29/2014 03:38 pm by Prober »
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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #48 on: 10/29/2014 03:39 pm »
Bars waiting on tone
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Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #49 on: 10/29/2014 03:45 pm »
15 mins to the webcast. Higher than usual interest in this thread.....can't think why! ;) Stick around newbies, the successes are a lot more fun.
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Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #50 on: 10/29/2014 03:49 pm »
Removing guests as we're getting hammered during this peak time again.
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Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #51 on: 10/29/2014 03:52 pm »
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Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #52 on: 10/29/2014 04:00 pm »
ULA coverage beginning.
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Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #53 on: 10/29/2014 04:01 pm »
Hey Atlas!
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Offline Orbiter

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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #54 on: 10/29/2014 04:01 pm »
Here we go!

"Atlas V rocket is fueled and ready to launch the GPS IIF-8 for the USAF"

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Offline Orbiter

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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #55 on: 10/29/2014 04:02 pm »
T-4 minutes and holding. Into the planned 30 minute hold and no issues being worked. Launch window is 18 minutes in length.
« Last Edit: 10/29/2014 04:02 pm by Orbiter »
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Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #56 on: 10/29/2014 04:02 pm »
In the hold at T-4 mins. No issues being worked.
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Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #57 on: 10/29/2014 04:02 pm »
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Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #58 on: 10/29/2014 04:02 pm »
ULA Coverage until T+20 mins.
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Offline Prober

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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #59 on: 10/29/2014 04:03 pm »
looking good
« Last Edit: 10/29/2014 04:04 pm by Prober »
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Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #60 on: 10/29/2014 04:03 pm »
Weather is green.
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Offline Orbiter

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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #61 on: 10/29/2014 04:04 pm »
Final weather briefing came in as within the criteria. Probability of violation is 30%, 6 knot winds from the north, 80F weather and beautiful.
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Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #62 on: 10/29/2014 04:04 pm »
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Offline AbeJ

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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #63 on: 10/29/2014 04:07 pm »
CNN will be showing launch live.  Bet they wouldn't have if not for yesterday's events!

Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #64 on: 10/29/2014 04:10 pm »
They called that "Death Watch Media" during the Shuttle days.

All quiet on the loop.
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Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #65 on: 10/29/2014 04:11 pm »
Solar Radiation acceptable!!! (running joke!).
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Offline Prober

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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #66 on: 10/29/2014 04:12 pm »
Smile guys
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Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #67 on: 10/29/2014 04:12 pm »
Polling next.
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Offline Orbiter

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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #68 on: 10/29/2014 04:12 pm »
Having some comm. issues, by the sound of it.
« Last Edit: 10/29/2014 04:13 pm by Orbiter »
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Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #69 on: 10/29/2014 04:14 pm »
Polling to come out of the hold.
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Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #70 on: 10/29/2014 04:14 pm »
GO to proceed with terminal count.
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Offline Orbiter

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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #71 on: 10/29/2014 04:15 pm »
S/C is configured for launch.
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Offline Prober

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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #72 on: 10/29/2014 04:15 pm »
Final Poll
Go Atlas Go Centaur  ;)
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Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #73 on: 10/29/2014 04:17 pm »
T-4 mins and COUNTING.
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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #74 on: 10/29/2014 04:18 pm »
in the final count
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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #75 on: 10/29/2014 04:18 pm »
T-3 minutes!
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Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #76 on: 10/29/2014 04:18 pm »
Tanks in press.
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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #77 on: 10/29/2014 04:18 pm »
FTS on internal power.
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Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #78 on: 10/29/2014 04:18 pm »
T-2 mins.
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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #79 on: 10/29/2014 04:19 pm »
FTS enabled.
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Offline Orbiter

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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #80 on: 10/29/2014 04:19 pm »
Vehicle on internal power, launch sequencer started, Centaur LH2/LO2 secured, launch enabled.
KSC Engineer, astronomer, rocket photographer.

Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #81 on: 10/29/2014 04:20 pm »
T-60 seconds.

GO ATLAS. GO CENTAUR. GO GPS. Good luck!
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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #82 on: 10/29/2014 04:20 pm »
GO Atlas, GO Centaur.
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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #83 on: 10/29/2014 04:21 pm »
Ignition!
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Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #84 on: 10/29/2014 04:21 pm »
LAUNCH!!
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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #85 on: 10/29/2014 04:21 pm »
Go Atlas V! Get up there!
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Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #86 on: 10/29/2014 04:21 pm »
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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #87 on: 10/29/2014 04:22 pm »
Continuing right down the center of the range track, 0.7 miles in altitude.
KSC Engineer, astronomer, rocket photographer.

Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #88 on: 10/29/2014 04:22 pm »
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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #89 on: 10/29/2014 04:22 pm »
Engines steady at 100%, everything good so far! Roll program completed!
KSC Engineer, astronomer, rocket photographer.

Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #90 on: 10/29/2014 04:22 pm »
Supersonic!
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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #91 on: 10/29/2014 04:22 pm »
Mach 1! Speed of sound!
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Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #92 on: 10/29/2014 04:23 pm »
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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #93 on: 10/29/2014 04:23 pm »
Passing through Max-Q, entering second throttle phase.
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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #94 on: 10/29/2014 04:23 pm »
10 miles in altitude, 2000 mph. Vehicle stable.
KSC Engineer, astronomer, rocket photographer.

Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #95 on: 10/29/2014 04:23 pm »
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Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #96 on: 10/29/2014 04:23 pm »
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Offline Orbiter

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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #97 on: 10/29/2014 04:24 pm »
95% thrust, RCS on Centaur activated.
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Offline Orbiter

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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #98 on: 10/29/2014 04:24 pm »
34 miles in altitude, 55 miles downrage, 5,000 mph.
KSC Engineer, astronomer, rocket photographer.

Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #99 on: 10/29/2014 04:24 pm »
Coming up on staging. She's beasting it.
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Offline Prober

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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #100 on: 10/29/2014 04:24 pm »
Launch   8)
2017 - Everything Old is New Again.
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Offline Orbiter

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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #101 on: 10/29/2014 04:25 pm »
Vehicle now weighs only 25% it did at launch. Entering boost phase chill-down on Centaur.
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Offline Orbiter

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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #102 on: 10/29/2014 04:25 pm »
Throttling at 4.6G, MECO!
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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #103 on: 10/29/2014 04:25 pm »
Staging! Centaur ignition!
KSC Engineer, astronomer, rocket photographer.

Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #104 on: 10/29/2014 04:26 pm »
Staging!

1-2 Sep. Centaur ingition.
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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #105 on: 10/29/2014 04:26 pm »
Good fairing separation! RL-10 looks good!
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Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #106 on: 10/29/2014 04:26 pm »
Fairing jettison.
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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #107 on: 10/29/2014 04:26 pm »
120 miles in altitude, 340 miles downrange.
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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #108 on: 10/29/2014 04:27 pm »
Great RL-10 Pics  :)
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Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #109 on: 10/29/2014 04:29 pm »
Centaur's don't care about risks. They are too busy pushing stuff ;D
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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #110 on: 10/29/2014 04:32 pm »
Young AF Capt started as an Intel Officer (14N) who worked with B-52 for 3 years before changing career fields.  I know a little about supporting the B-52s with Intel :)
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #111 on: 10/29/2014 04:34 pm »
12 minutes in.
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Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #112 on: 10/29/2014 04:35 pm »
Now orbital!
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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #113 on: 10/29/2014 04:36 pm »
Now where can we pick up one of these posters?
2017 - Everything Old is New Again.
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Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #114 on: 10/29/2014 04:36 pm »
Two minutes to the end of the first burn.
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Offline Orbiter

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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #115 on: 10/29/2014 04:38 pm »
MECO!
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Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #116 on: 10/29/2014 04:38 pm »
First burn complete!

Three hour coast phase.
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Offline Targeteer

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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #117 on: 10/29/2014 04:39 pm »
cutoff orbit 95nm X 10950nm inclined 55 degrees
« Last Edit: 10/29/2014 04:39 pm by Targeteer »
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #118 on: 10/29/2014 04:39 pm »
2017 - Everything Old is New Again.
"I fear all we have done is to awaken a sleeping giant..." --Isoroku Yamamoto

Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #119 on: 10/29/2014 04:39 pm »
ULA webcast ending.

Great work so far!
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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #120 on: 10/29/2014 04:46 pm »
I didn't catch the exact launch time in the format 1721:00.XXXUTC. Did the commentator mentioned it?

Offline Lars-J

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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #121 on: 10/29/2014 04:51 pm »
Good launch!  :)

I noticed something sticking out from the fairing - see picture below - Is this normal? If so I must have missed it before.

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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #122 on: 10/29/2014 04:53 pm »
Good launch!  :)

I noticed something sticking out from the fairing - see picture below - Is this normal? If so I must have missed it before.

It is standard: the Hydrogen vent fin to keep the evaporating Hydrogen away from the vehicle during ascent.

Offline John Santos

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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #123 on: 10/29/2014 04:56 pm »
I didn't catch the exact launch time in the format 1721:00.XXXUTC. Did the commentator mentioned it?

Shortly before the end of the T-4 hold, the commentator said the countdown would resume at 1717:00 and that the launch would occur at 1721:00, but I don't remember if they announced a fractional seconds part.  If they did, it was "000".  Hope this helps.

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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #124 on: 10/29/2014 07:13 pm »
- Aaron

Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #125 on: 10/29/2014 08:32 pm »
United Launch Alliance Successfully Launches 50th Atlas V Rocket

 

Fourth Global Positioning System Satellite Launched for the Air Force in 2014

 

Cape Canaveral Air Force Station, Fla., (Oct. 29, 2014) – A United Launch Alliance (ULA) Atlas V rocket successfully launched the eighth Global Positioning System (GPS) IIF-8 satellite for the U.S. Air Force at 1:21 p.m. EDT today from Space Launch Complex-41. This is ULA’s 12th launch in 2014, and the 89th successful launch since the company was formed in December 2006.

“ULA is honored to work with this world-class U.S. government and contractor mission team, and we are very proud to have delivered  the GPS IIF-8 satellite to orbit today on the 50th Atlas V mission,” said Jim Sponnick, ULA vice president, Atlas and Delta Programs. “Achieving 50 Atlas missions with 100 percent mission success is a tribute to this team’s sustained focus on one mission at a time and dedication to reliably meeting our customer’s launch needs.”

This mission was launched aboard an Atlas V Evolved Expendable Launch Vehicle (EELV) 401 configuration vehicle, which includes a 4-meter-diameter payload fairing. The Atlas booster for this mission was powered by the RD AMROSS RD-180 engine, and the Centaur upper stage was powered by a single Aerojet Rocketdyne RL10A engine.

ULA's next launch is the Delta IV Heavy Exploration Flight Test (EFT-1) mission of NASA’s Orion spacecraft for Lockheed Martin scheduled for Dec. 4 from Space Launch Complex-37 at Cape Canaveral Air Force Station, Florida.

GPS IIF-8 is the eighth in a series of next generation GPS satellites and will join a worldwide timing and navigation system utilizing 24 satellites in six different planes, with a minimum of four satellites per plane positioned in orbit approximately 11,000 miles above the Earth’s surface. The GPS IIF series provides improved accuracy and enhanced performance for GPS users.

The EELV program was established by the United States 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 85 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.
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Offline Chris Bergin

Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #126 on: 10/29/2014 08:33 pm »
Cape Canaveral Air Force Station, Fla. (Oct. 29, 2014) – A United Launch Alliance (ULA) Atlas V rocket successfully launched the eighth Global Positioning System (GPS) IIF-8 satellite for the U.S. Air Force at 1:21 p.m. EDT today from Space Launch Complex-41. This is the 50th successful Atlas V mission and the fourth GPS mission for the U.S. Air Force this year.

Photo: United Launch Alliance
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Offline BrightLight

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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #127 on: 10/29/2014 10:33 pm »
Well done ULA - 98% on payload 100% on 1st stage, the RD-180 has a impressive track record.

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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #128 on: 10/29/2014 11:55 pm »
Atlas V GPS IIF-8 Launch Highlights

by: UnitedLaunchAlliance

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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #129 on: 10/30/2014 07:11 am »
Newest Boeing GPS IIF Launched, Signals Indicate Satellite Working Properly

GPS constellation achieving greater accuracy as modernization continues


CAPE CANAVERAL AIR FORCE STATION, Fla., Oct. 29, 2014 – The 8th Boeing [NYSE: BA] Global Positioning System (GPS) IIF has signaled controllers it is functioning properly after launching today, marking another step in the modernization of the satellite constellation that’s relied on by millions of people worldwide. 

This was the fourth, and final, GPS IIF launch scheduled for the U.S. Air Force this year. Liftoff from Florida’s Cape Canaveral Air Force Station, on a United Launch Alliance Atlas 5 rocket, occurred at 1:21 p.m. Eastern time, with signal acquisition about three and a half hours later. The satellite is to enter full operational service during December.

“The schedule this year has put the GPS team through its paces, with launches occurring approximately every three months to continue GPS modernization,” said Dan Hart, vice president of Government Space Systems at Boeing Network & Space Systems. “We typically were processing two satellites concurrently at the Cape, requiring strong execution, an unrelenting focus on mission assurance and solid team work with the Air Force and United Launch Alliance.”

The next GPS IIF launch is expected during the first quarter of 2015. The Air Force ordered 12 in total, and four remaining satellites are stored and maintained at the Boeing Satellite Development Center in El Segundo, Calif. The GPS IIFs are continuing modernization with improved accuracy and anti-jamming as well as bringing into service the new civil L5 signal.
Jacques :-)

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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #130 on: 10/30/2014 10:12 am »
I don't know if this is the right place to mention it, but there's a minor error on the launch story on the main page.

"IIR-4, which is also known as USA-150, will then be re-phased into a reserve slot in the A plane of the constellation." 

IIR-4 (SVN 51) is in the E plane.  It is not possible to move satellites between planes.  SVN-51 will be moved to a reserve slot in the E plane.

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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #131 on: 10/30/2014 11:42 am »
Just want to express my appreciation of the reliability argument from ULA.
Sometimes I just flat out don't get it.

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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #132 on: 11/12/2014 12:34 am »
Atlas V GPS IIF-8 Launch Cam

Published on Nov 11, 2014
Here's another look at the Atlas V launch of the GPS IIF-8 satellite for the U.S. Air Force.

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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #133 on: 12/12/2014 11:35 pm »

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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #134 on: 12/19/2014 01:58 pm »
GPS Modernization Advances as 8th Boeing GPS IIF Becomes Active

GPS IIF team delivered four satellites in 2014, completing busy year
 

EL SEGUNDO, Calif., Dec. 18, 2014 – The eighth Boeing [NYSE: BA] Global Positioning System IIF satellite has completed on-orbit checkout and joined the active 31-satellite constellation, helping the U.S. Air Force continue modernizing the network that millions of people worldwide use.

The Air Force and Boeing have now put four GPS-IIF satellites into service this year, adding to the modernization effort with advanced atomic clocks, stronger anti-jamming, and a new third civil signal and longer design life.

“We made great progress this year in the quest to modernize GPS services,” said Dan Hart, vice president of Government Space Systems for Boeing Network & Space Systems. “With two-thirds of the 12 Boeing GPS IIFs now on orbit, the constellation is setting new records for accuracy and the Boeing GPS IIF’s are consistently among the best performing.”

Since becoming fully operational in 1995, GPS has evolved into a global digital resource. The Air Force modernization is a long-term initiative to further improve GPS signal accuracy, strength and quality while also adding new military and civil signals to benefit the ever-expanding user community.

Boeing has contributed to GPS since its inception, providing four generations of satellites over a four-decade period. The latest satellite, known as GPS Space Vehicle-69, was launched Oct. 29 and completed on-orbit checkout and validation Dec. 12.

“We believe that our track record on GPS speaks for itself, with more than 525 years of on-orbit operation,” Hart said. “We continue to support today’s GPS mission, and are looking forward to delivering the remaining four GPS IIF satellites into service. At the same time, Boeing continues to explore innovative new solutions that will further enhance and improve the next generation of GPS satellites.”
Jacques :-)

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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #135 on: 03/25/2015 05:57 am »
SVN69 with PRN3 was launched into E1 slot. But in NAVCEN table, SVN69 is in B6 slot (if I remember correctly, this slot is for SVN49). I have asked NAVCEN about this recently, but their answer was not clear for me. In all, they said that it relates to feature of operation of satellites in constellation by USAF. Can someone explain to me why they show SVN69 with PRN3 in plane B, instead of plane E?
« Last Edit: 03/25/2015 05:59 am by anik »

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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #136 on: 03/25/2015 03:24 pm »
The satellites are recorded by slot in a plane, and there are only six slots per plane.  This is from a identification/recording perspective though, as there is no physical reason why you can't put a seventh satellite in a plane.

That's the case with E plane.  There are seven satellites, but in the Ops Advisory, there are only options for E1 - E6.  So, since there's no room in the Ops Advisory for the E plane, it gets stuck where there is room.  Namely the B plane.

It's just a record keeping thing really. 

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Re: LIVE: Atlas V 401 - GPS IIF-8 - October 29, 2014
« Reply #137 on: 03/25/2015 04:32 pm »
Thank you for answer!

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