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The knowledge existing on barotrauma in divers medicin is applicable for those skinsuits. Any larger pressure difference between different parts of the body may cause small or larger injuries. Those i …

A space suit could be tested to double the operating pressure. This test can be done in a vacuum or in air. For the stability of the suit, only the pressure difference between inside and outside is es …

The space suits consisted of many layers. There was a liquid cooled undergarment, above that an airtight rubber coated nylon layer holding the pressure. There are many outer layer made from fabric an …

One of several solutions is the use of O-ring seals. A seal does not need to be perfect gas-tight. As long as the leak rate of the suit is small compared to the oxygen consumption of the astronaut it …

We have some data about the Apollo Space Suit from https://www.hq.nasa.gov/alsj/ALSJ-FlightPLSS.pdf The Apollo Portable Life Support System By Kenneth S. Thomas : O2 Storage Quantity 1.0 lbs LiOH Qu …

As long as air pressure is constant or decreasing a Valsalva maneuver is not needed. Experienced divers know other methods to equalize their ears without closing their nose by hand when they descend i …

From History of the Apollo Space Suit by the International Latex Corporation (ILC). PDF When setting up the suits in preparation for the extravehicular walk on the lunar surface, the astronauts …

The Sokol suit does not use a hose for gas inlet and another for outlet. There is no outlet hose. Gas exhaust flows through the blue pressure relief valve at the centre of the chest; this valve also …

A space suit worn on the Moon needs a system for removal of heat produced by the body of the wearer. A system that works in a vacuum without air around it. The suits also had a micro meteroite protect …

They wear suits for reentry to be prepared for a case of sudden loss of pressure in the cabin. To breathe from the atmosphere within the suit, the suit needs to be closed and the gloves are an essenti …

An air tank would not help for a suit filled with pure oxygen. The suit is a closed loop breathing system, a carbon dioxide scrubber is more important than an oxygen tank. But the exhaled gas shouled …

The Apollo astronauts only wore their suits for a short time after launch. After they left the Earth orbit, they doffed the space suits. When the two astronauts prepared for Moon landing, they donned …

As a scuba diver I got some remarks. A space suit is designed as a closed system with constant pressure. Exhaled oxygen is reused and the exhaled carbon dioxide is scrubbed. Only the oxygen used by th …

The very bulky suits you saw are those for an EVA, but the Spacex suit is to be used only inside a spaceship. The suits used outside the ISS or on the Moon need a micro-meteorite protection and a cool …

The outer pane is just a replaceable protection of the inner pane against scratches, dirt, and abrasion. The helmet on the suits for Artemis missions will also feature a quick-swap protective vi …