Author Topic: LIVE: Delta IV Heavy: NRO L-49 - Jan 20, 2011  (Read 130489 times)

Offline yg1968

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Re: LIVE: Delta IV Heavy: NRO L-49 - Jan 20, 2011
« Reply #180 on: 01/21/2011 12:21 am »
I'll start recording it about 2105 UTC or so.
Jim

Great. Will you be uploading the webcast on filefront.com?

Offline kq6ea

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Re: LIVE: Delta IV Heavy: NRO L-49 - Jan 20, 2011
« Reply #181 on: 01/21/2011 12:40 am »
WELL.....I was going to capture it with DownloadHelper, but it couldn't grab the stream, so no joy.

Online Chris Bergin

Re: LIVE: Delta IV Heavy: NRO L-49 - Jan 20, 2011
« Reply #182 on: 01/21/2011 12:42 am »
I guess this is when we find out if the legends about the shock waves bouncing back from that nearby hill are true.



Was only because of the Shuttle's SRBs.

Would have been amazing if there had been shuttle launches from both KSC and VAFB.

Offline GoForTLI

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Re: LIVE: Delta IV Heavy: NRO L-49 - Jan 20, 2011
« Reply #183 on: 01/21/2011 12:59 am »
Would have been amazing if there had been shuttle launches from both KSC and VAFB.

Just  caught the YouTube of today's Delta IV Heavy launch.  I was imagining hearing GLS milestones during the countdown, with the hills in the background. 

Someone said "majestic" earlier, and I can't improve on that description of a Heavy rising from the pad.  Wow!
« Last Edit: 01/21/2011 01:00 am by GoForTLI »
There is a theory which states that if ever anyone discovers exactly what the Universe is for and why it is here, it will instantly disappear and be replaced by something even more bizarre and inexplicable. There is another theory which states that this has already happened. -- Douglas Adams

Offline MrTim

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Re: LIVE: Delta IV Heavy: NRO L-49 - Jan 20, 2011
« Reply #184 on: 01/21/2011 01:05 am »
For those who are curious, here is what it looked like about 200mi south of the launch. Completely horizontal trail, but obviously much faster than a jet.

Easily visible with the naked eye, about equivalent to 4" long object at arm's length.

Offline TitanFan

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Re: LIVE: Delta IV Heavy: NRO L-49 - Jan 20, 2011
« Reply #185 on: 01/21/2011 01:07 am »
A few shots from Surf Beach.  The sun couldn't have picked a worse spot in the sky to be at T-0...
TITAN...assured access to space.

Offline JosephB

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Re: LIVE: Delta IV Heavy: NRO L-49 - Jan 20, 2011
« Reply #186 on: 01/21/2011 01:44 am »
A few people asking why we're calling the vehicle "Betty" :)

Read William's great overview:
http://www.nasaspaceflight.com/2011/01/live-delta-iv-heavy-launch-nro-l-49/

Great summary article by Mr. Graham.

Online Chris Bergin

Re: LIVE: Delta IV Heavy: NRO L-49 - Jan 20, 2011
« Reply #187 on: 01/21/2011 01:59 am »
Nice, very nice!

    Vandenberg AFB, Calif., (Jan. 21, 2011) - A United Launch Alliance Delta IV Heavy launches with a National Reconnaissance Office payload at Space Launch Complex-6 at 1:10 p.m. PST.  The Delta IV Heavy is the largest rocket ever launched from the west coast of the U.S. standing 235 feet tall and producing nearly 2 millions pounds of thrust at liftoff.  The Delta IV Heavy is America’s most powerful liquid fueled rocket.  This was the fifth launch of a Delta IV heavy in program history. Photo by Pat Corkery, United Launch Alliance.


Offline dks13827

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Re: Delta IV Heavy: NRO L-49 - Jan 20, 2011
« Reply #188 on: 01/21/2011 02:47 am »
 Looks like a great manned booster to me !  Lets get on with it... in 6 months we will have....    nothing !!!!
:(

Offline Lee Jay

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Re: LIVE: Delta IV Heavy: NRO L-49 - Jan 20, 2011
« Reply #189 on: 01/21/2011 02:49 am »
Wow...is the insulation actually on fire in that wide shot?

Offline Downix

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Re: Delta IV Heavy: NRO L-49 - Jan 20, 2011
« Reply #190 on: 01/21/2011 02:59 am »
Looks like a great manned booster to me !  Lets get on with it... in 6 months we will have....    nothing !!!!
:(
And we'd still have nothing with Delta IV. ULA says a man-rated Delta would take 5-6 years. Atlas would be 3 years.
chuck - Toilet paper has no real value? Try living with 5 other adults for 6 months in a can with no toilet paper. Man oh man. Toilet paper would be worth it's weight in gold!

Offline hartspace

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Re: LIVE: Delta IV Heavy: NRO L-49 - Jan 20, 2011
« Reply #191 on: 01/21/2011 03:03 am »
Wow...is the insulation actually on fire in that wide shot?
I was about to post a similar enlargement.  With the flame on the nearest strap-on and the black smoke coming off it, it certainly looks like the insulation on that booster is burning.  I don't recall seeing that on the other Delta IV launches, just the normal H2 ignition scorching.  It would be interesting to see the other photos in that sequence to see how long it was burning.
« Last Edit: 01/21/2011 03:10 am by hartspace »

Offline jimvela

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Re: LIVE: Delta IV Heavy: NRO L-49 - Jan 20, 2011
« Reply #192 on: 01/21/2011 03:20 am »
Wow...is the insulation actually on fire in that wide shot?

I suppose that's one way to shed a few Kg...

To my eyes, the left hand booster as seen in the image is burning and trailing smoke in a "U" shape along the body of the booster as well as the active flame between that booster and the core.

I can't believe they intended or want the vehicle in flames like that... ignition fireball not withstanding.

Offline kq6ea

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Re: LIVE: Delta IV Heavy: NRO L-49 - Jan 20, 2011
« Reply #193 on: 01/21/2011 03:25 am »
YOUCH!
Man, that's *scary*!
Is the big "burp" of flame at the engine ignition normal with a Delta-IV Heavy?
Jim

Offline Lee Jay

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Re: LIVE: Delta IV Heavy: NRO L-49 - Jan 20, 2011
« Reply #194 on: 01/21/2011 03:29 am »
YOUCH!
Man, that's *scary*!
Is the big "burp" of flame at the engine ignition normal with a Delta-IV Heavy?
Jim

It's normal with an RS-68.  What I don't understand is why the ROFIs don't keep it under control at the bottom of the booster.

Offline Danderman

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Re: LIVE: Delta IV Heavy: NRO L-49 - Jan 20, 2011
« Reply #195 on: 01/21/2011 03:33 am »
Wow...is the insulation actually on fire in that wide shot?

I suppose that's one way to shed a few Kg...

To my eyes, the left hand booster as seen in the image is burning and trailing smoke in a "U" shape along the body of the booster as well as the active flame between that booster and the core.

I can't believe they intended or want the vehicle in flames like that... ignition fireball not withstanding.

This reminds me of one of the technical issues with SLC-6 back in the Shuttle days, the accumulation of hydrogen gas at the base of the pad. They installed a turbine near the pad to help vent the gas, but its possible that the turbine is either gone, or not 100% effective.

Offline kq6ea

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Re: LIVE: Delta IV Heavy: NRO L-49 - Jan 20, 2011
« Reply #196 on: 01/21/2011 03:48 am »
OK....I'm a real rookie here when it comes to launching a Delta-IV Heavy at VAFB, so bear with me!
Isn't there a water deluge system, or is that what "ROFI" stands for? Is this related to the "Hydrogen Build Up" that they were so worried about when launching a Shuttle from SLC-6?

Offline jimvela

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Re: LIVE: Delta IV Heavy: NRO L-49 - Jan 20, 2011
« Reply #197 on: 01/21/2011 03:58 am »
This reminds me of one of the technical issues with SLC-6 back in the Shuttle days, the accumulation of hydrogen gas at the base of the pad. They installed a turbine near the pad to help vent the gas, but its possible that the turbine is either gone, or not 100% effective.

I thought that the turbine engine was long gone, and that only ROFI was used for Delta IV (plus beefing up the aft end of the vehicle)

(ROFI is the radially outward flame ignitor- AKA the "Sparklers")

Offline Nick L.

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Re: LIVE: Delta IV Heavy: NRO L-49 - Jan 20, 2011
« Reply #198 on: 01/21/2011 04:43 am »
YOUCH!
Man, that's *scary*!
Is the big "burp" of flame at the engine ignition normal with a Delta-IV Heavy?
Jim

It's normal with an RS-68.  What I don't understand is why the ROFIs don't keep it under control at the bottom of the booster.

The ROFIs actually did their job here, which was to burn off the excess hydrogen (producing the fireball). Otherwise it would have built up and exploded when the engines ignited. Probably the pad layout caused the hydrogen to collect closer to the vehicle than it does at the Cape resulting in the scorching.

The first Heavy was almost as badly burned when it launched. I think they made some modifications to reduce the charring but the differences between the pads probably negated those.
« Last Edit: 01/21/2011 04:47 am by Nick L. »
"Now you may leave here for four days in space, but when you return it's the same old place..."

Offline marsavian

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Re: LIVE: Delta IV Heavy: NRO L-49 - Jan 20, 2011
« Reply #199 on: 01/21/2011 05:39 am »
Insider's view from NASA Mission Director Center (MDC) on south Vandenberg


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