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| Keywords: Apollo Project DVIDS707326.jpg en Cable system which supports the test subject on the Reduced Gravity Walking Simulator The purpose of this simulator was to study the subject while walking jumping or running Researchers conducted studies of various factors such as fatigue limit energy expenditure and speed of locomotion A W Vigil described the purpose of the simulator as follows When the astronauts land on the moon they will be in an unfamiliar environment involving particularly a gravitational field only one-sixth as strong as on earth A novel method of simulating lunar gravity has been developed and is supported by a puppet-type suspension system at the end of a long pendulum A floor is provided at the proper angle so that one-sixth of the subject's weight is supported by the floor with the remainder being supported by the suspension system This simulator allows almost complete freedom in vertical translation and pitch and is considered to be a very realistic simulation of the lunar walking problem For this problem this simulator suffers only slightly from the restrictions in lateral movement it puts on the test subject This is not considered a strong disadvantage for ordinary walking problems since most of the motions do in fact occur in the vertical plane However this simulation technique would be severely restrictive if applied to the study of the extra-vehicular locomotion problem for example because in this situation complete six degrees of freedom are rather necessary This technique in effect automatically introduces a two-axis attitude stabilization system into the problem The technique could however be used in preliminary studies of extra-vehicular locomotion where for example it might be assumed that one axis of the attitude control system on the astronaut maneuvering unit may have failed Published in James R Hansen Spaceflight Revolution NASA Langley Research Center From Sputnik to Apollo Washington NASA 1995 ; A W Vigil Discussion of Existing and Planned Simulators for Space Research Paper presented at Conference on the Role of Simulation in Space Technology Blacksburg VA August 17-21 1964 NASA Identifier L65-7687 2009-09-23 Glenn Research Center https //www dvidshub net/image/707326 707326 2012-10-10 16 09 WASHINGTON DC US PD-USGov Langley Research Center Images from DoD uploaded by Fæ | ||||
