posted 02-23-2025 08:06 AM            

However, I have never seen any pictures of astronauts actually using them in flight.
The flight images I have seen show astronauts sleeping in their flightsuits or with eyecovers. To be fair this makes most sense in zero-g and in the cluttered capsule.

posted 02-23-2025 01:47 PM               

quote:

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Originally posted by ChrisSL:
To be fair this makes most sense in zero-g and in the cluttered capsule.

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posted 02-24-2025 03:40 AM            

The crewmen's sleeping positions will be in the right couch and under the left and right couch with the head towards the hatch.

posted 02-24-2025 10:16 AM            

The Apollo 8 Press Kit mentions only two sleeping bags, and a diagram shows them under the left and right couches.

Additional transverse restraint straps have been added to the sleeping bags since the Apollo 7 mission to provide greater sleeping comfort and body restraint in zero-g. The sleeping bags have also been perforated for improved ventilation.

posted 02-25-2025 02:56 AM               

Two restraint bags for sleeping were located beneath the right and left couches and provided well-ventilated restraint enclosures. The foot portion of the bag, which restrained the knee area, permitted undesirable lower leg movement. For future spacecraft, the bag will be restrained by straps at the foot end.

The sleep restraint assembly provides a crewman with a zero-g environment enclosure for use during rest periods. Two bags are provided, one each located under the left and right couches. These bags are made of Teflon Beta fabric restrained at each end to the bulkhead by straps, have a full-length zipper opening for the torso, and are perforated for ventilation. Straps are provided at the middle of the bag to secure the crewman if he is lying on the bag, rather than inside.

6.1.3 Human Factors

The crew station was adequately configured for this mission and presented no compromise to crew performance of their required duties. The crew encountered no difficulties in moving about the cabin and no obstructions to motion. The crew did report that the hand controllers were somewhat susceptible to inadvertent actuation during intravehicular motion and that some improvement in the sleeping-bag restraints and shielding of some main display panel instruments from sun glare would be helpful. Additional discussion of crew-station effectiveness, major crew provisions, and certain operational equipment is presented in section 5.20

posted 03-12-2025 12:51 PM               

quote:

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Originally posted by Blackarrow:
I suspect that also applies to a tired astronaut, regardless of sunlight or fan noises.

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(I wrote this originally to be part of this article, but it got cut, hence the formatting.)

"How well did you sleep after you finally got the suit off, you finally put the hammock down, you're finally in some version of PJs, you had something to eat, something to drink? What was that sleep like?" Hanks asked Duke.

"The first night we were on the moon, our flight plan had us landing and suiting up and going outside right after power down, but we were six hours late landing. So they changed the flight plan," said the 10th man to walk on the moon. "They [Mission Control] said to go to sleep four hours after we landed on the moon.

Duke's Apollo 16 crewmate, John Young, fell asleep immediately, but Duke found he was still awake after four hours and had to resort to taking a sleeping pill. The excitement of being on the moon was just too much.

The situation was entirely different, though, after each of his three walks (and drives, using the lunar rover) on the moon's surface.

"It was exhausting," said Duke. "Eight hours in an Apollo spacesuit was not an easy task."