Dr. Gaume's research at SAM involved testing the space cabin simulator, which could manufacture and maintain an artificial atmosphere. In the space cabin simulator, scientists would “study the change in the composition of the atmosphere produced by the presence of the occupant…and…try to develop devices which will automatically keep this chamber at…tolerable levels.” One-man tests of the simulator also included ways of recycling water by distilling and condensing water vapor recovered from the air and urine, thereby eliminating the need to store water onboard. The first test lasted 24 hours and, over the next two years, became increasingly longer. The tests attracted national attention. In 1958, Senator Lyndon B. Johnson and a crowd of reporters greeted test subject, Airman Donald G. Farrell, as he emerged from his seven days inside the cabin.

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