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Questions regarding medical aspects of space exploration, like effects of missions on human body during launch, flight and reentry.

2 votes

What limits are put on mission profiles by maximum tolerated G-force?

The Moon escape velocity is 2380 m/s. For a constant acceleration, the needed distance and time are: 4.0 g : 72176 m and 60.65 s 4.5 g : 64156 m and 53.91 s 5.0 g : 57741 m and 48.52 s 6.0 g : 48117 m …
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3 votes

Would a higher air pressure on the ISS or elsewhere make it easier to "swim" in microgravity?

The astronauts would get nitrogen narcosis even worse than in 40 m deep water breathing air. In both cases the gas pressure is 5 bar, but under water the partial pressure of nitrogen is 3.95 bar but i …
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14 votes

Which astronauts or cosmonauts were injured by a hard landing?

The female South Korean astronaut Yi So-yeon may have been injured in Soyuz TMA-11 on April 19, 2008. Yi So-yeon was hospitalized after her return to South Korea due to injuries caused by the rough r …
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13 votes

Which astronauts or cosmonauts were injured by a hard landing?

During the abort of Soyuz 7K-T No.39 launch, Vasily Lazarev was injured by very high g-loads ( up to 21.3 g, 15 g were expected) and was never able to fly to space again. It was April 5, 1975.
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9 votes

Maximum survivable atmospheric pressure

The maximum pressure for long term survival in an atmosphere of 79 % nitrogen and 21 % oxygen is limited by oxygen toxicity. The limit of the partial pressure of oxygen is about 0.5 bar, the maximum p …
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8 votes

What effects did the different air pressure and air composition in certain spacecraft have o...

The partial pressure of oxygen (ppO2) should be higher than about 0.16 bar and lower than about 0.4 to 0.5 bar for longer exposition of some days up to a week. So breathing pure oxygen for a week is p …
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4 votes

Does extended microgravity increase the rate of kidney stones in astronauts? Do these lead t...

You could use existing medical data to calculate the number of kidney stones patients to be expected for all the ISS astronauts and their stay time. … Using the medical data of all ISS astronauts, even a tenfold increase of the rate of kidney stones could not be detected. …
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