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Normal air pressure on the ISS is 101.3 kPa (14.7 psi); the same as at sea level on Earth. "While members of the ISS crew could stay healthy even with the pressure at a lower level, the equipment on the Station is very sensitive to pressure.
22 wrz 2021 · On an aircraft, cabin air pressure is obtained via the "bleed air" system on the engines (or via electric compressors taking in outside air on newer aircraft like the 787), and continuously released through an outflow valve.
Flight levels are usually designated in writing as FLxxx, where xxx is a two- or three-digit number indicating the pressure altitude in units of 100 feet (30 m). In radio communications, FL290 would be pronounced as "flight level two nine(r) zero".
The real question then is why the breathing atmosphere in Mir, Soyuz, and the Space Shuttle is a standard atmosphere, both in terms of pressure and composition. There are significant advantages to a reduced pressure, pure oxygen environment.
The FAI uses the term Kármán line to define the boundary between aeronautics and astronautics: [6] Aeronautics: For FAI purposes, aerial activity, including all air sports, within 100 km of Earth's surface. Astronautics: For FAI purposes, activity more than 100 km above Earth's surface.
13 mar 2023 · With the helmet, visor and gloves locked in place, the suit fully encloses the astronaut in an air bubble inflated to 3.5 pounds, about the same air pressure as a person would find 30,000 feet above Earth. That is slightly lower than the cruising altitude of many airliners.
6 cze 2009 · National Aeronautics and Space Administration (NASA) uses flight above 80 km to designate individuals as astronauts, while the Fédération Aéronautique Internationale uses the 100 km Karman line as the internationally accepted boundary to space.
