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  Apollo CM crew egress after splashdown (Page 2)

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Author Topic:   Apollo CM crew egress after splashdown
David C
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Posts: 389
From: Pasadena
Registered: Apr 2012

posted 01-16-2014 01:55 PM     Click Here to See the Profile for David C     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by Michael Davis:
I assume that Apollo 7 took the longest time to go from Stable I to Stable II in part because they were the first to test the procedure.

According to Walt Cunningham it was because they were waiting for the CM to cool off before inflating the bags which could have contacted the heatshield. Surprised me to hear that. I guess there was a little extra caution on the first flight.

David C
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Posts: 389
From: Pasadena
Registered: Apr 2012

posted 01-16-2014 01:58 PM     Click Here to See the Profile for David C     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by Obviousman:
An all-Navy crew should have done it by protocol: most senior is last on, first out. (TIC)
Your logic applies to a ship alongside under Navy orders. None of that applied in this case.

LM-12
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From: Ontario, Canada
Registered: Oct 2010

posted 01-16-2014 03:00 PM     Click Here to See the Profile for LM-12     Edit/Delete Message   Reply w/Quote
The three CM uprighting bags were inflated nine minutes after splashdown, according to the Apollo 7 timeline. It then took four minutes to upright the spacecraft.

LM-12
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From: Ontario, Canada
Registered: Oct 2010

posted 01-16-2014 10:40 PM     Click Here to See the Profile for LM-12     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by Peter downunder:
...did the CMP fly the spacecraft during re-entry from the left seat on all Apollo missions?
Here is another thread that discusses who sat where in the CM.

LM-12
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From: Ontario, Canada
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posted 01-24-2014 10:33 PM     Click Here to See the Profile for LM-12     Edit/Delete Message   Reply w/Quote
This incident occurred during the first Skylab splashdown:
Recovery Helicopter Struck by Drogue Parachute Reefing Line

The recovery helicopters entered the fall out pattern of the debris resulting from the command module entry before all debris had reached the ocean surface. A 3 meter section of drogue parachute reefing line impacted the main rotor blade of one of the helicopters and was found draped over a landing gear strut when the helicopter returned to the aircraft carrier.

An impact time analysis has been performed for all debris generated during reentry. The following table shows the latest time of landing for all debris which is still in the air after command module landing.

As a result of the analysis, recovery procedures are being modified to prevent helicopter entry into the debris fall out pattern until all pieces which could damage the helicopters have impacted the water.

LM-12
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From: Ontario, Canada
Registered: Oct 2010

posted 01-28-2014 08:25 AM     Click Here to See the Profile for LM-12     Edit/Delete Message   Reply w/Quote
Are there any stable II photos of Apollo 11?

cmj1964
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From: Broomfield, Colorado, USA
Registered: Mar 2013

posted 01-28-2014 08:59 AM     Click Here to See the Profile for cmj1964   Click Here to Email cmj1964     Edit/Delete Message   Reply w/Quote
The 290 lbs of seawater trapped in the tunnel would also contribute to the longer uprighting time of the Apollo 7 CM. The Apollo 7 CM had a two hatch configuration in the forward tunnel, and the mission report addresses post-splashdown seawater leakage through a vent valve in the upper tunnel hatch (ref: paragraphs 5.19.6 and 11.23). Subsequent CM's had a single unified tunnel hatch, which did not have the suspect valve.

cmj1964
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From: Broomfield, Colorado, USA
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posted 01-28-2014 09:16 AM     Click Here to See the Profile for cmj1964   Click Here to Email cmj1964     Edit/Delete Message   Reply w/Quote
Figure 11G on page 114 in Bob Fish's excellent book, "Hornet Plus Three", is a USN photo of Apollo 11 in Stable II.

LM-12
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From: Ontario, Canada
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posted 01-28-2014 10:15 PM     Click Here to See the Profile for LM-12     Edit/Delete Message   Reply w/Quote
I found this stable II photo on the KSC website.

LM-12
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From: Ontario, Canada
Registered: Oct 2010

posted 02-04-2014 09:14 AM     Click Here to See the Profile for LM-12     Edit/Delete Message   Reply w/Quote
Are the Skylab splashdown locations shown on this map correct?

The map indicates that Skylab 4 splashed down somewhere north of Hawaii. However, the photo caption for S74-17133 says that Skylab 4 splashed down 176 miles southwest of San Diego. Hawaii is about 2500 miles from San Diego.

Which one is correct?

moorouge
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From: U.K.
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posted 02-04-2014 10:11 AM     Click Here to See the Profile for moorouge   Click Here to Email moorouge     Edit/Delete Message   Reply w/Quote
The photo has the correct location.

moorouge
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posted 04-03-2014 08:53 AM     Click Here to See the Profile for moorouge   Click Here to Email moorouge     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by cmj1964:
The 290 lbs of seawater trapped in the tunnel would also contribute to the longer uprighting time of the Apollo 7 CM.

Actually there was approximately 400lbs of water in the tunnel. Of more concern was the fact that if one of the uprighting bags had failed the capsule would have been unable to return to Stable 1.

On edit - the previous figure of 290lbs of water in the tunnel is probably closer to the actual amount. My quoted figure, though in a NASA technical report, is likely to be from memory. The 290lbs is from the '7' mission report.

LM-12
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From: Ontario, Canada
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posted 12-20-2015 12:18 PM     Click Here to See the Profile for LM-12     Edit/Delete Message   Reply w/Quote
Regarding the CM crew egress for Apollo 11:

The book "Apollo Moon Missions - The Unsung Heroes" has the CM crew egress order as Aldrin-Collins-Armstrong. It also states that the astronauts were lifted up into the helicopter in the same order.

"First Man" mentions that Armstrong was the last to exit the CM.

Any other sources?

canyon42
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From: Ohio
Registered: Mar 2006

posted 12-20-2015 03:22 PM     Click Here to See the Profile for canyon42   Click Here to Email canyon42     Edit/Delete Message   Reply w/Quote
Baker's "History of Manned Spaceflight," Harland's "The First Men on the Moon," and Farmer's and Hamblin's "First on the Moon" all have the egress order from the spacecraft as Armstrong-Collins-Aldrin. The last source states the same order was followed in lifting to the helicopter, while Baker doesn't mention it and Harland says that the lifting order was "unclear" because of the identical BIG suits.

LM-12
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From: Ontario, Canada
Registered: Oct 2010

posted 12-20-2015 06:38 PM     Click Here to See the Profile for LM-12     Edit/Delete Message   Reply w/Quote
Some disagreement there.

How about the order the Apollo 11 astronauts stepped off the helicopter? The caption for photo 6901225 identifies (from left to right) Aldrin, Armstrong and Collins. I would agree with that.

LM-12
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From: Ontario, Canada
Registered: Oct 2010

posted 12-20-2015 10:57 PM     Click Here to See the Profile for LM-12     Edit/Delete Message   Reply w/Quote
If you compare this navyhistory.org image to the film footage, you will see that it is definitely the third astronaut hoisted up to the helicopter. Same arm and leg positions, and same plastic bag between the knees. Any idea what was in that? The image is identified as Armstrong.

Captain Apollo
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From: UK
Registered: Jun 2004

posted 12-21-2015 03:22 AM     Click Here to See the Profile for Captain Apollo   Click Here to Email Captain Apollo     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by dabolton:
What was risk exposure to breathing toxic fumes after an Apollo landing?
Had to say, could not resist, but regarding toxic fumes, I recall a few of the frogmen saying that the crews were a bit "ripe."

LM-12
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From: Ontario, Canada
Registered: Oct 2010

posted 12-21-2015 10:26 AM     Click Here to See the Profile for LM-12     Edit/Delete Message   Reply w/Quote
The PAO transcripts do not mention the A11 astronauts by name, only by number, during the CM egress and helicopter hoist.

moorouge
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From: U.K.
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posted 12-21-2015 02:29 PM     Click Here to See the Profile for moorouge   Click Here to Email moorouge     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by dabolton:
What was risk exposure to breathing toxic fumes after an Apollo landing?
You'll find all the answers in MSC-01856, Revision C, dated June 21 1971 - Apollo Recovery Operational Procedures Manual.

LM-12
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Posts: 1666
From: Ontario, Canada
Registered: Oct 2010

posted 12-21-2015 09:53 PM     Click Here to See the Profile for LM-12     Edit/Delete Message   Reply w/Quote
From the Apollo 11 Technical Crew Debriefing on page 16-7:
COLLINS: Recovery Operations went very smoothly. The swimmer threw the BIGs into us. We put the BIGs on inside the spacecraft. We put them on in the lower equipment bay. Neil did first, then I did after him. Buzz put his on in the right-hand seat. We went out; Neil first, then me, and then Buzz. It's necessary, at least the way we had practiced it, for us to help one another in sealing the BIGs around the head to make sure the zipper was fully closed.


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