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Author
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Topic: MR-3/Shepard: Countdown hold at T-6 minutes
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J.L
Member Posts: 681
From: Bloomington, Illinois, USA
Registered: May 2005
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posted 11-25-2016 11:48 AM
   
Does anyone have a transcript of the Mercury-Redstone 3 countdown that might identify why they were in a hold at T-6 minutes? Thanks. |
Grounded!
Member Posts: 382
From: Bennington, Vermont, USA
Registered: Feb 2011
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posted 11-25-2016 12:10 PM
The NASA Mission Reports book on that flight indicates that this hold was due to overcast skies which would affect camera coverage. A problem with a power inverter was also identified and dealt with during this hold. |
Grounded!
Member Posts: 382
From: Bennington, Vermont, USA
Registered: Feb 2011
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posted 11-25-2016 12:23 PM
On re-read I see that this hold was at T-15 minutes and not at T-6 minutes. I do not see a specific reference to the hold at T-6 in this book. My bad. |
J.L
Member Posts: 681
From: Bloomington, Illinois, USA
Registered: May 2005
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posted 11-25-2016 01:33 PM
Was it for the high pressure readings in the Redstone LOX tank? |
Ken Havekotte
Member Posts: 2983
From: Merritt Island, Florida, Brevard
Registered: Mar 2001
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posted 11-25-2016 01:41 PM
Yes, it was J.L., but I think it was at 2 minutes before liftoff. The pressure of the LOX inside the Redstone was getting too high. The glitch was finally corrected resuling in "bleeding off" some of the pressure by remote control. |
J.L
Member Posts: 681
From: Bloomington, Illinois, USA
Registered: May 2005
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posted 11-25-2016 02:01 PM
Thank you Ken! |
Go4Launch
Member Posts: 549
From: Seminole, Fla.
Registered: Jul 2003
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posted 11-25-2016 04:55 PM
The event that JL and I are trying to pin down (for an upcoming book) was apparently only a slight hold at T-6 minutes. Does anyone have either a transcript or a recording of the MR-3 launch that "far back" in the count? Darned if I can find anything online, although the Paley Center has a 1:15:00 audio recording of Robert Trout. |
Ken Havekotte
Member Posts: 2983
From: Merritt Island, Florida, Brevard
Registered: Mar 2001
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posted 11-25-2016 05:05 PM
Let me check my media coverage files of MR-3's final countdown that hopefully would include a T-6 minutes and holding. It may take a little time though in going through all of the "live" press coverage material and I may even have an audio of it somewhere. |
LM-12
Member Posts: 3324
From: Ontario, Canada
Registered: Oct 2010
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posted 11-25-2016 09:12 PM
This Freedom 7 video from lunarmodule5 includes some countdown audio a few minutes before launch, and mentions a hold. |
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