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a close-fitting garment covering the legs and abdomen that is worn by the crew of high-speed aircraft and can be pressurized to prevent blackout during certain manoeuvres
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
A piece of clothing worn by combat pilots and astronauts. It exerts pressure on the abdomen and the lower limbs of the aircrew to prevent or retard the flow of blood below the chest when under positive acceleration. This delays the onset of the gray-out or blackout phenomena some pilots may experience. A g-suit increases the gray-out or blackout threshold by 1¼ to 2 g. The same as anti-g suit.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved