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Abstract

During the past few years the United States Air Force has been conducting a series of experiments on the effects of weightlessness.* In these series the zero gravity condition is obtained by flying specially equipped aircraft in a precision maneuver (Kep-lerian trajectory) during which time the effects of nearly complete weightlessness are felt by the occupants of the plane. In fighter* type aircraft, the period of weightlessness may extend to 40 sec; however, in such a vehicle, the subject must be strapped into place. In larger aircraft, such as the KC-135, the period of weightlessness may be as long as 32 sec and the subjects can float freely. It is expected that the X-15 aircraft, now under test, will expose the pilot to as much as 4 min of weightlessness. The first Mercury astronaut experienced 5 min of weightlessness. The first reported Russian manned flight is said to have involved about 90 min of zero gravity.

Keywords

Space Flight Gravity Condition Artificial Environment Neutral Buoyancy Otolith Organ 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1961

Authors and Affiliations

  • Raphael B. Levine
    • 1
  1. 1.Lockheed Aircraft CorporationMariettaUSA

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