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Pressure suit
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A pressure suit is a protective suit worn by high-altitude pilots who may fly at altitudes where the air pressure is too low for an unprotected person to survive, even when breathing pure oxygen at po
A U-2 pilot suit
A U-2 pilot suit
An indirect-compression pressure suit without the exterior ballistic covering, showing the many complex fabric folds, internal fold support rings, and
An indirect-compression pressure suit without the exterior ballistic covering, showing the many complex fabric folds, internal fold support rings, and flexible stacked cable hinge assemblies of constant-volume flexible joints.
Showing the functional components of a direct-compression capstan anti-G pressure suit: A - inflation hose connection to external air supply, B - flex
Showing the functional components of a direct-compression capstan anti-G pressure suit: A - inflation hose connection to external air supply, B - flexible elastic tube contained inside an inelastic fabric tunnel along the length of a limb, C - alternating fabric bands to compress suit when capstan inflates, D - laced folds for customizing the fit of the fabric suit to tightly match the wearer's anatomy.
Italian aviator Mario Pezzi in his high-altitude pressure suit, circa 1937
Italian aviator Mario Pezzi in his high-altitude pressure suit, circa 1937
Armstrong limit
Videos
The Armstrong limit, also called Armstrong's line, is a measure of altitude above which atmospheric pressure is sufficiently low that water boils at the normal temperature of the human body. Exposure
Pressure suit
…pressure at which the lungs excrete carbon dioxide (approximately 87 mmHg) exceeds outside air pressure. Above 19,000 m (62,000 ft), also known as the Armstrong limit, fluids in the throat and lungs will boil away. Generally, 100% oxygen is used to maintain an equivalent altitude of 3,000 m (10,000 ft). Generally…
The Armstrong limit is above most of Earth's atmosphere.
The Armstrong limit is above most of Earth's atmosphere.
If the cockpit lost pressure while the aircraft was above the Armstrong limit, even a positive pressure oxygen mask (shown) could not protect the pilo
If the cockpit lost pressure while the aircraft was above the Armstrong limit, even a positive pressure oxygen mask (shown) could not protect the pilot.