Author Topic: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09  (Read 141135 times)

Offline robertross

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #240 on: 01/17/2009 10:53 PM »
7:33 PM ET. Everything is still go at this point. *knock on wood*

And for those interested, the webcast will start at 7:07pm EST.

Thank-you  :)
Remembering those who made the ultimate sacrifice for our rights & freedoms, and for those injured, visible or otherwise, in that fight.

Offline ringshot

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #241 on: 01/17/2009 10:53 PM »
Do those three core boosters remain strapped together until staging?

---  CHAS

No. The outer two are run at full power for their entire burn duration and so run out of fuel earlier. The center one throttles back to 58% a few seconds after liftoff. When the outer two run out, the center CBC (which still has fuel left) goes to full power and the outer two separate. The center CBC runs for a little bit longer until 1-2 sep.

If you go back and watch the video of the last D-IVH launch, you can actually see the center engine throttle down if you look closely. The flame gets a little smaller compared to the outers.

Actually, the core doesn't throttle up until after the strap-ons are jettisoned.

G'Day...Ron
G'Day...Ron


Offline Nick L.

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #243 on: 01/17/2009 10:57 PM »
Nice article GW.
"Now you may leave here for four days in space, but when you return it's the same old place..."

Offline Hunt101

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #244 on: 01/17/2009 10:59 PM »
Good work William. There will be a webcast starting shortly, I assume you are aware.

Offline NUAETIUS

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #245 on: 01/17/2009 11:02 PM »
I have only watched Spacex and Shuttle launches, will this one include the cameras on the 2nd stage like Spacex?
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Offline Ford Mustang

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #246 on: 01/17/2009 11:03 PM »
I have only watched Spacex and Shuttle launches, will this one include the cameras on the 2nd stage like Spacex?

I would not believe so.  This is a classified mission.  The Titan rockets and Delta II's (IIRC) do not have them on the second stage either.
« Last Edit: 01/17/2009 11:04 PM by Ford Mustang »

Offline Svetoslav

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #247 on: 01/17/2009 11:05 PM »
I have a question - is this video/webcast copyright protected? Are we allowed to post photos/videos on websites/forums?

Online Chris Bergin

Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #248 on: 01/17/2009 11:05 PM »
Good work William. There will be a webcast starting shortly, I assume you are aware.

Yes sir. And a link reminder:
http://vyvxlivewm.fplive.net/vyvxlive-live/vyvxula011309_300

Offline cb6785

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #249 on: 01/17/2009 11:07 PM »
Webcast at ULA-homepage now scheduled to start at 7:25
Launch at 7:41
« Last Edit: 01/17/2009 11:11 PM by cb6785 »
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Carsten Banach

Online ugordan

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #250 on: 01/17/2009 11:08 PM »
I have only watched Spacex and Shuttle launches, will this one include the cameras on the 2nd stage like Spacex?

I would not believe so.  This is a classified mission.  The Titan rockets and Delta II's (IIRC) do not have them on the second stage either.

The last Delta IV Heavy had a 2nd stage camera. Both launches up until now had at least the 1st stage cameras.

Offline William Graham

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #251 on: 01/17/2009 11:08 PM »
Webcast started

Online Bubbinski

Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #252 on: 01/17/2009 11:09 PM »
Thanks Chris.  I'll be watching. 

Is there a way that things like webcast links could be pinned at the top of every page in live coverage threads, separately from the discussions?
I'll even excitedly look forward to "flags and footprints" and suborbital missions. Just fly...somewhere.

Offline Ronsmytheiii

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #253 on: 01/17/2009 11:09 PM »
« Last Edit: 01/17/2009 11:10 PM by Ronsmytheiii »
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Offline Nick L.

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #254 on: 01/17/2009 11:09 PM »
It wouldn't do much good. You'd be able to see the 1-2 sep, second stage nozzle deploy, and second stage start. The fairing sep (and thus the end of the webcast) happens only a few seconds later.
"Now you may leave here for four days in space, but when you return it's the same old place..."

Offline William Graham

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #255 on: 01/17/2009 11:10 PM »
Webcast now scheduled to start at 7:25 according to the ULA-homepage

Launch at 7:41

ULA: Launch still targeting 00:33.
« Last Edit: 01/17/2009 11:10 PM by GW_Simulations »

Offline RafaelCE

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #256 on: 01/17/2009 11:10 PM »
Coverage just started in the link provided above
"Good burn, Atlantis is a fantastic ship" STS-125 right after DOB

Offline Ronsmytheiii

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #257 on: 01/17/2009 11:11 PM »
"Every vision is a joke until the first man accomplishes it; once realized, it becomes commonplace." - Robert Goddard

Online wannamoonbase

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #258 on: 01/17/2009 11:12 PM »
I'm having lots of delay and trouble with the various webcasts.  Must be in high demand.

I guess they need to fly the HLV more often so people get more use to it.

GO DELTA!
Excited to be finally into the first Falcon Heavy flow, we are getting so close!

Offline cb6785

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Re: LIVE: Delta IV Heavy: NRO L-26 - Jan 17, 09
« Reply #259 on: 01/17/2009 11:12 PM »
Webcast now scheduled to start at 7:25 according to the ULA-homepage

Launch at 7:41

ULA: Launch still targeting 00:33.

Don't know why they changed the times on the HP...it's definetly confusing...
You know, if I’d had a seat you wouldn’t still see me in this thing. - Chuck Yeager

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Carsten Banach

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