Author Topic: Discovery STS 41-D / A new orbiter sets sail  (Read 62196 times)

Offline Ares67

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Re: Discovery STS 41-D / A new orbiter sets sail
« Reply #20 on: 12/28/2011 06:08 PM »

Offline Ares67

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Re: Discovery STS 41-D / A new orbiter sets sail
« Reply #21 on: 12/28/2011 06:09 PM »

Offline Ares67

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Re: Discovery STS 41-D / A new orbiter sets sail
« Reply #22 on: 12/28/2011 06:10 PM »

Offline Ares67

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Re: Discovery STS 41-D / A new orbiter sets sail
« Reply #23 on: 12/28/2011 06:13 PM »

Offline Ares67

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Re: Discovery STS 41-D / A new orbiter sets sail
« Reply #24 on: 12/28/2011 06:16 PM »

Offline Ares67

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Re: Discovery STS 41-D / A new orbiter sets sail
« Reply #25 on: 12/28/2011 06:18 PM »

Offline Ares67

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Re: Discovery STS 41-D / A new orbiter sets sail
« Reply #26 on: 12/28/2011 06:22 PM »

Offline Ares67

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Re: Discovery STS 41-D / A new orbiter sets sail
« Reply #27 on: 12/28/2011 06:23 PM »

Offline Ares67

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Re: Discovery STS 41-D / A new orbiter sets sail
« Reply #28 on: 12/28/2011 06:25 PM »

Offline Ares67

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Re: Discovery STS 41-D / A new orbiter sets sail
« Reply #29 on: 12/28/2011 06:27 PM »

Offline Ares67

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Re: Discovery STS 41-D / A new orbiter sets sail
« Reply #30 on: 12/28/2011 06:35 PM »
June 14, 1984 - Crew Dress Rehearsal Countdown Test

Judith Resnik: "I think we are very fortunate. We have a great crew, we had a good time training. And we are ready to go!"

Offline Ares67

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Re: Discovery STS 41-D / A new orbiter sets sail
« Reply #31 on: 12/28/2011 06:39 PM »

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Re: Discovery STS 41-D / A new orbiter sets sail
« Reply #32 on: 12/28/2011 06:48 PM »
June 22, 1984

After fighting some thunderstorms on their way, the 41-D crew arrived at KSC at 4:05 pm EDT, completing  a  3-hour T-38 flight from Houston. Henry Hartsfield told media representatives at the SLF: “Last I heard, the bird was in good shape. I can tell you one thing: The crew is ready to go.  They’ve been nipping at my heels for the last year. Now they are seeing the end in sight. And they are really ready to go.”

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Re: Discovery STS 41-D / A new orbiter sets sail
« Reply #33 on: 12/28/2011 06:53 PM »
June 25, 1984 - First launch attempt

The planned launch time was 8:43 am EDT

« Last Edit: 12/28/2011 07:13 PM by Ares67 »

Offline Ares67

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Re: Discovery STS 41-D / A new orbiter sets sail
« Reply #34 on: 12/28/2011 06:54 PM »

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Re: Discovery STS 41-D / A new orbiter sets sail
« Reply #35 on: 12/28/2011 06:55 PM »
Sieck: Discovery, we’re going to have to pull you out and try again tomorrow.

PAO: This is Shuttle launch control. We are at T-9 minutes and holding. Launch director Bob Sieck has made the decision we will scrub for the day. We do not feel confident in proceeding with the launch this morning, based on the problem that we have had with this backup flight system. A lot of discussion went on on the network about being able to do some transitions of the computers looking at some data. However, it would appear that it would be a race against the clock whether or not you could find out anything about this computer within our 43 minute window today.

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Re: Discovery STS 41-D / A new orbiter sets sail
« Reply #36 on: 12/28/2011 06:55 PM »
NASA spokesman Tom Utsman later explained: “We ran a quick test, called a built-in test routine into that computer, and the indication came back that we had a serious hardware failure.” – The failed BFS computer (GPC #5) overnight was replaced by another one taken from the orbiter Challenger.

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Re: Discovery STS 41-D / A new orbiter sets sail
« Reply #37 on: 12/28/2011 07:10 PM »
June 26, 1984 - "Gee, I thought we'd be a lot higher at MECO!" (Steve Hawley)

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Re: Discovery STS 41-D / A new orbiter sets sail
« Reply #38 on: 12/28/2011 07:18 PM »

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Re: Discovery STS 41-D / A new orbiter sets sail
« Reply #39 on: 12/28/2011 07:31 PM »
Mike Mullane "Riding Rockets" (p. 157) - I can really recommend this book! :):

T-31 seconds. "Go for auto-sequence start." Discovery's computers assumed control of the countdown from LCC's computers. She now commanded herself. The cockpit was a scene of intense, silent focus. Again, I was glad my vital signs weren't on public display. My heart now was a low hum.

T-10 seconds. "Go for main engine start." The engine manifold pressure gauges shot up as valves opened and fuel and oxidizer flooded into the pipes. The turbo-pumps came to life and began to ram 1,000 pounds of propellant per second into each of the three combustion chambers.

At T-6 seconds the cockpit shook violently. Engine start. This is it, I thought. In spite of my fear, I smiled. I was headed into space. It was really going to happen. 5... 4... The vibrations intensified as the SSMEs sequentially came on line.

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