Questions tagged [apollo-program]
NASA's Apollo program was a 17-mission program that focused on landing a human on the lunar surface. The program was the third human spaceflight by NASA, after Mercury and Gemini.
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Do the launch pads at Canaveral use fresh water, seawater, or what?
Do they use chlorinated drinking water, fresh water from the ecology lake that separates the Cape from the mainland, or what?
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Did the Apollo CM cooling unit use ethylene glycol or propylene glycol? [duplicate]
Photo: NASA
I assume they'd use ethylene glycol because that's what they use in cars. It must be more efficient, or they wouldn't use it in cars because it's poisonous.
Propylene glycol is in my ...
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Why did the flag on the moon stop moving?
In a well intended video debunking the denial of the lunar landing a YouTuber claimed it was the thin lunar atmosphere that brought the flag to a stop. I didn't think that was likely considering how ...
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Does the Apollo "free return" crossover point correspond to the L1 LaGrange point?
The Apollo lunar missions used a free return trajectory which resembles a figure-8 when plotted in an Earth/Moon rotating frame of reference. This trajectory was chosen for safety: if the mission was ...
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Did the Apollo Command Module launch with the docking probe already in place?
This question is spun off from a different question I posted, where I was told I should not combine questions into one.
I am interested to learn more about the Apollo Docking System, and particularly ...
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Does the Apollo Command Module retain its docking probe for the return to Earth?
This question is spun off from a different question I posted, where I was told I should not combine questions into one.
I am interested to learn more about the Apollo Docking System. I know that the ...
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Do the Apollo probe/drogues also serve as an airtight seal when not docked, or is there a separate seal?
I am interested to learn more about the Apollo Docking System. I know that the CM has a Probe that docks to the LM's Drogue. After these two components meet, twelve latches form a solid connection ...
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Were the Apollo probe/drogue separated after removal from the docking tunnel?
This question is spun off from a different question I posted, where I was told I should not combine questions into one.
I am interested to learn more about the Apollo Docking System. I know that the ...
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Where were the Apollo Probe/Drogue stored after docking?
This question is spun off from a different question I posted, where I was told I should not combine questions into one.
I am interested to learn more about the Apollo Docking System. I know that the ...
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Why does the Apollo LM's Cross-Pointer display have a bulge?
X-Pointer, top right
I'm interested in the design of Apollo-era analog flight instruments.
While there are great resources online about the FDAI, information on the Cross-Pointer seems limited beyond ...
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How fine was RCS thrust control on the Apollo SM?
I've wondered about how the Apollo spacecraft could rotate to a specified roll angle (for example) and remain there. I know there were two dead bands available, 5 degrees and a much smaller value that ...
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Was NASA concerned about Pulmonary Edema during the Apollo missions?
The cabin pressure in the Apollo capsules was reduced to 5 psi once in orbit. Did this pose a danger to the astronauts?
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How would an Apollo LM crew have determined which abort mode to use when attempting to land?
I have read a great deal about procedures for Apollo missions, and read much of the online Apollo Flight Journal and Apollo Surface Journal transcripts. When discussing the decision to abort a landing,...
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Apollo Inertial Measurement Unit Platform Gyro Stabilization Feedback Signals
When the spacecraft is maneuvered, orthogonally-mounted gyros on the IMU Platform detect this motion. The gyros emit electrical signals proportional to the detected angular rates. These signals power ...
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Can anyone share or provide a source for these 1970s Project Apollo documents
doc title: Manually-aided on-board Apollo cislunar navigation
Document ID: 19710029813
Publisher: INST. OF NAVIGATION,
pub date: January 1, 1970
NTRS Distribution Limits Public
Link to NTRS "...
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