Pressure Suit, Adavanced Extravehicular Suit, B1-A

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This suit was manufactured by Litton Industries, which made a series of Advanced Extra-Vehicular Suits (AES) during the early 1960s that were of a constant volume whether pressurized or unpressurized. This one was called the Model B1-A, of which approximately six were made, and was not equipped with a thermal cover-layer. It had a hemispherical helmet made of polycarbonate.
These experimental suits were designed to maintain an almost perfectly constant volume while enabling a full range of body motions. They could operate at higher pressure, thus reducing the time-consuming oxygen pre-breathing period before extra vehicular activities.
NASA transferred the suit to the National Air and Space Museum in 1979.
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National Air and Space Museum Collection
Inventory Number
Credit Line
Transferred from NASA - Headquarters
Litton Industries
Country of Origin
United States of America
Bellows: Aluminium, rubberized nylon
Disconnects: Coated aluminium
Fixtures: Anodized aluminium
Overall: 68 in. tall x 28 in. wide x 16 in. deep (172.72 x 71.12 x 40.64cm)
National Air and Space Museum
Restrictions & Rights
Do not reproduce without permission from the Smithsonian Institution, National Air and Space Museum