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  Mercury - Gemini - Apollo
  Launch scrubs during Mercury through Apollo

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Author Topic:   Launch scrubs during Mercury through Apollo
Tom
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Posts: 1275
From: New York
Registered: Nov 2000

posted 06-29-2013 06:29 PM     Click Here to See the Profile for Tom   Click Here to Email Tom     Edit/Delete Message   Reply w/Quote
I was doing some research recently regarding the Mercury, Gemini and Apollo manned space programs. If I recall correctly, Mercury and Gemini each had four scrubs occur after the crew was aboard.

The amazing thing is that Apollo (including Skylab and ASTP) didn't have a single scrub with the crew on board. Considering the complexity of the vehicle(s) (command and lunar modules in most cases) involved, not to mention the huge Saturn launch vehicles... it really was an amazing period of our space program!

RISPACE
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Posts: 56
From: Warwick, RI USA
Registered: Jan 2006

posted 07-03-2013 07:40 AM     Click Here to See the Profile for RISPACE     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by Tom:
The amazing thing is that Apollo (including Skylab and ASTP) didn't have a single scrub with the crew on board.
I had not thought of that before. That really is an interesting fact. Call it luck or efficiency or what have you, it truly is amazing.

Where were you researching to get the scrub info for Mercury and Gemini? I wonder how many scrubs occurred during the shuttle program.

Robert Pearlman
Editor

Posts: 27328
From: Houston, TX
Registered: Nov 1999

posted 07-03-2013 08:08 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
Not a scrub, but Apollo 14 was delayed launching 40 minutes by the weather.

And Apollo 17 was delayed 30 seconds before its originally-scheduled ignition time when a failure in the automatic countdown sequencer occurred. The launch was delayed for 2 hours, 40 minutes.

canyon42
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Posts: 170
From: Ohio
Registered: Mar 2006

posted 07-03-2013 02:18 PM     Click Here to See the Profile for canyon42   Click Here to Email canyon42     Edit/Delete Message   Reply w/Quote
Not to mention that in hindsight scrubbing Apollo 12 for weather might not have been a bad idea.

Headshot
Member

Posts: 182
From: Streamwood, IL USA
Registered: Feb 2012

posted 07-03-2013 04:11 PM     Click Here to See the Profile for Headshot   Click Here to Email Headshot     Edit/Delete Message   Reply w/Quote
Didn't all of the Gemini scrubs have Tom Stafford as one of the crew? Two for Gemini 6 and two for Gemini 9.

Tom
Member

Posts: 1275
From: New York
Registered: Nov 2000

posted 07-03-2013 07:23 PM     Click Here to See the Profile for Tom   Click Here to Email Tom     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by RISPACE:
Where were you researching to get the scrub info for Mercury and Gemini?
Gemini information was obtained through various sources.

Four Gemini flights with a total of 6 scrubs occured after the crew was on board, but in the case of Gemini 11 while in the white room.

  • Gemini 5 (weather)
  • Gemini 6 (Agena failure & engine shutdown)
  • Gemini 9 (Agena failure & computer problem)
  • Gemini 11 (Atlas LV issue)
For the shuttle programs first 113 missions (through STS-107) there was a total of 51 scrubs (38 flights) in which the crew was on board.

As for the post Columbia era, out of the 22 flights, 7 were scrubbed with crew either on board, or in the case of STS-134, in the astrovan on the way to the pad.

The flights were:
STS-114
STS-121 (twice)
STS-116
STS-127 (twice)
STS-128
STS-130
STS-134

ilbasso
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Posts: 1494
From: Greensboro, NC USA
Registered: Feb 2006

posted 07-17-2013 04:54 PM     Click Here to See the Profile for ilbasso   Click Here to Email ilbasso     Edit/Delete Message   Reply w/Quote
I just remembered that Apollo 9 had a scrub, albeit without the crew on board. The first countdown had officially begun, aiming toward an initial launch date of February 28. However, after the countdown began, all three crewmen developed colds. The countdown was halted at T-16 hours the day before launch. The launch date was moved to March 3. The countdown was recycled to T-45 hours to allow for replacing the LM's supercritical helium and batteries.

All times are CT (US)

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