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Why did the Apollo 13 crew extend the LM landing gear?
Why was the Apollo CM main engine thought to be unreliable on Apollo 13?At what angle did Apollo 13 need to reenter?Could the Apollo 13 crew have survived the CO2 issue using their spacesuitsWhy did the Apollo Lunar Module have four landing legs?Why use skids for landing gear on an orbiter?Was a one way trip to the moon considered by the crew of Apollo 13?Why did Apollo 13 need to scrub their oxygen in the LM?Was Apollo 13's engine really damaged?Why didn't the Apollo 13 crew wear their spacesuits in the LM?What happened to Apollo 13 LM descent stage?
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From the Apollo 13 radio transcript, as they're going through the Lunar Module activation checklist:
060:58:58 Lousma: Okay. The only item on page 10 is to deploy the landing gear.
060:59:06 Lovell: Okay, we'll do that now.
[Comm break.]
061:00:10 Haise: Okay. The landing gear are down and locked, Jack, and looking ahead now at page 11, we've done all of that.
They're clearly not planning to land anywhere, and any balance disturbance from having the gear up is dwarfed by the balance issues of having the CSM hanging off the docking port, so why didn't they skip it? They skipped a number of other non-essential steps in the procedure (such as activating the S-band antenna), so why not this one?
apollo-13 lunar-module landing-gear
edited May 2 at 2:27
Dr Sheldon
6,36822359
asked May 2 at 1:56
MarkMark
4,8652235
$endgroup$
add a comment |
$begingroup$
From the Apollo 13 radio transcript, as they're going through the Lunar Module activation checklist:
060:58:58 Lousma: Okay. The only item on page 10 is to deploy the landing gear.
060:59:06 Lovell: Okay, we'll do that now.
[Comm break.]
061:00:10 Haise: Okay. The landing gear are down and locked, Jack, and looking ahead now at page 11, we've done all of that.
They're clearly not planning to land anywhere, and any balance disturbance from having the gear up is dwarfed by the balance issues of having the CSM hanging off the docking port, so why didn't they skip it? They skipped a number of other non-essential steps in the procedure (such as activating the S-band antenna), so why not this one?
apollo-13 lunar-module landing-gear
edited May 2 at 2:27
Dr Sheldon
6,36822359
asked May 2 at 1:56
MarkMark
4,8652235
$endgroup$
add a comment |
$begingroup$
From the Apollo 13 radio transcript, as they're going through the Lunar Module activation checklist:
060:58:58 Lousma: Okay. The only item on page 10 is to deploy the landing gear.
060:59:06 Lovell: Okay, we'll do that now.
[Comm break.]
061:00:10 Haise: Okay. The landing gear are down and locked, Jack, and looking ahead now at page 11, we've done all of that.
They're clearly not planning to land anywhere, and any balance disturbance from having the gear up is dwarfed by the balance issues of having the CSM hanging off the docking port, so why didn't they skip it? They skipped a number of other non-essential steps in the procedure (such as activating the S-band antenna), so why not this one?
apollo-13 lunar-module landing-gear
edited May 2 at 2:27
Dr Sheldon
6,36822359
asked May 2 at 1:56
MarkMark
4,8652235
$endgroup$
From the Apollo 13 radio transcript, as they're going through the Lunar Module activation checklist:
060:58:58 Lousma: Okay. The only item on page 10 is to deploy the landing gear.
060:59:06 Lovell: Okay, we'll do that now.
[Comm break.]
061:00:10 Haise: Okay. The landing gear are down and locked, Jack, and looking ahead now at page 11, we've done all of that.
They're clearly not planning to land anywhere, and any balance disturbance from having the gear up is dwarfed by the balance issues of having the CSM hanging off the docking port, so why didn't they skip it? They skipped a number of other non-essential steps in the procedure (such as activating the S-band antenna), so why not this one?
apollo-13 lunar-module landing-gear
apollo-13 lunar-module landing-gear
edited May 2 at 2:27
Dr Sheldon
6,36822359
asked May 2 at 1:56
MarkMark
4,8652235
edited May 2 at 2:27
Dr Sheldon
6,36822359
asked May 2 at 1:56
MarkMark
4,8652235
edited May 2 at 2:27
Dr Sheldon
6,36822359
edited May 2 at 2:27
Dr Sheldon
6,36822359
edited May 2 at 2:27
Dr Sheldon
6,36822359
6,36822359
asked May 2 at 1:56
MarkMark
4,8652235
asked May 2 at 1:56
MarkMark
4,8652235
asked May 2 at 1:56
MarkMark
4,8652235
4,8652235
add a comment |
add a comment |
1 Answer
1
active
oldest
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$begingroup$
According to LMA790-3-LM Apollo Operations Handbook: Lunar Module LM 10 and Subsequent Volume I, section 2.3.6:
The landing gear must be deployed before descent engine firing. If not deployed, the landing gear would be in the path of the descent engine plume and would be damaged.
The manual also mentions that the landing gear is deployed with explosive charges. I would imagine that firing an engine near the unexploded charges would be a bad idea.
answered May 2 at 2:20
Dr SheldonDr Sheldon
6,36822359
$endgroup$
16
$begingroup$
Nice! Clear the engine path.
$endgroup$
– Organic Marble
May 2 at 3:21
17
$begingroup$
Heat on the landing gear from the rocket exhaust could travel up the gear legs to the LEM structure, not something you'd want!
$endgroup$
– GdD
May 2 at 7:32
add a comment |
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1 Answer
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1 Answer
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oldest
votes
active
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$begingroup$
According to LMA790-3-LM Apollo Operations Handbook: Lunar Module LM 10 and Subsequent Volume I, section 2.3.6:
The landing gear must be deployed before descent engine firing. If not deployed, the landing gear would be in the path of the descent engine plume and would be damaged.
The manual also mentions that the landing gear is deployed with explosive charges. I would imagine that firing an engine near the unexploded charges would be a bad idea.
answered May 2 at 2:20
Dr SheldonDr Sheldon
6,36822359
$endgroup$
16
$begingroup$
Nice! Clear the engine path.
$endgroup$
– Organic Marble
May 2 at 3:21
17
$begingroup$
Heat on the landing gear from the rocket exhaust could travel up the gear legs to the LEM structure, not something you'd want!
$endgroup$
– GdD
May 2 at 7:32
add a comment |
$begingroup$
According to LMA790-3-LM Apollo Operations Handbook: Lunar Module LM 10 and Subsequent Volume I, section 2.3.6:
The landing gear must be deployed before descent engine firing. If not deployed, the landing gear would be in the path of the descent engine plume and would be damaged.
The manual also mentions that the landing gear is deployed with explosive charges. I would imagine that firing an engine near the unexploded charges would be a bad idea.
answered May 2 at 2:20
Dr SheldonDr Sheldon
6,36822359
$endgroup$
16
$begingroup$
Nice! Clear the engine path.
$endgroup$
– Organic Marble
May 2 at 3:21
17
$begingroup$
Heat on the landing gear from the rocket exhaust could travel up the gear legs to the LEM structure, not something you'd want!
$endgroup$
– GdD
May 2 at 7:32
add a comment |
$begingroup$
According to LMA790-3-LM Apollo Operations Handbook: Lunar Module LM 10 and Subsequent Volume I, section 2.3.6:
The landing gear must be deployed before descent engine firing. If not deployed, the landing gear would be in the path of the descent engine plume and would be damaged.
The manual also mentions that the landing gear is deployed with explosive charges. I would imagine that firing an engine near the unexploded charges would be a bad idea.
answered May 2 at 2:20
Dr SheldonDr Sheldon
6,36822359
$endgroup$
According to LMA790-3-LM Apollo Operations Handbook: Lunar Module LM 10 and Subsequent Volume I, section 2.3.6:
The landing gear must be deployed before descent engine firing. If not deployed, the landing gear would be in the path of the descent engine plume and would be damaged.
The manual also mentions that the landing gear is deployed with explosive charges. I would imagine that firing an engine near the unexploded charges would be a bad idea.
answered May 2 at 2:20
Dr SheldonDr Sheldon
6,36822359
answered May 2 at 2:20
Dr SheldonDr Sheldon
6,36822359
answered May 2 at 2:20
Dr SheldonDr Sheldon
6,36822359
answered May 2 at 2:20
Dr SheldonDr Sheldon
6,36822359
6,36822359
16
$begingroup$
Nice! Clear the engine path.
$endgroup$
– Organic Marble
May 2 at 3:21
17
$begingroup$
Heat on the landing gear from the rocket exhaust could travel up the gear legs to the LEM structure, not something you'd want!
$endgroup$
– GdD
May 2 at 7:32
add a comment |
16
$begingroup$
Nice! Clear the engine path.
$endgroup$
– Organic Marble
May 2 at 3:21
17
$begingroup$
Heat on the landing gear from the rocket exhaust could travel up the gear legs to the LEM structure, not something you'd want!
$endgroup$
– GdD
May 2 at 7:32
16
16
$begingroup$
Nice! Clear the engine path.
$endgroup$
– Organic Marble
May 2 at 3:21
$begingroup$
Nice! Clear the engine path.
$endgroup$
– Organic Marble
May 2 at 3:21
17
17
$begingroup$
Heat on the landing gear from the rocket exhaust could travel up the gear legs to the LEM structure, not something you'd want!
$endgroup$
– GdD
May 2 at 7:32
$begingroup$
Heat on the landing gear from the rocket exhaust could travel up the gear legs to the LEM structure, not something you'd want!
$endgroup$
– GdD
May 2 at 7:32
add a comment |
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