The PLSS supplied oxygen for breathing purposes, suit pressurization, and ventilation. It also removed contaminants from oxygen circulating through the suit and supplied water and oxygen for body cooling. Conversion of exhaled carbon dioxide into oxygen was accomplished through a lithium-hydroxide cartridge also contained in the PLSS. An emergency supply of oxygen was contained in the oxygen purge system mounted on top of the PLSS.

When fully charged, the pack weighs 38 kilograms (84 pounds) on Earth or 6.3 kilograms (14 pounds) on the Moon.


The space suit on exhibit is from the National Aeronautics and Space Administration.

V-2 (A-4)

61. British-supervised postwar launch of V-2 in Germany.

62. V-2.

The German V-2, originally designated A-4, represents the beginning of modern rocketry. The V-2 was the first proof that large rockets of the sort described by the space-flight pioneers of the early twentieth century could be successfully built and flown. It was also the forerunner of the intercontinental ballistic missile system.