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  • Man/System Technology and Life Support  (1)
  • SPACE TRANSPORTATION  (1)
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  • 1
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    Simulation of Shuttle launch G forces and acoustic loads using the NASA Ames Research Center 20G centrifuge (1994)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: The high cost and long times required to develop research packages for space flight can often be offset by using ground test techniques. This paper describes a space shuttle launch and reentry simulating using the NASA Ames Research Center's 20G centrifuge facility. The combined G-forces and acoustic environment during shuttle launch and landing were simulated to evaluate the effect on a payload of laboratory rates. The launch G force and acoustic profiles are matched to actual shuttle launch data to produce the required G-forces and acoustic spectrum in the centrifuge test cab where the rats were caged on a free-swinging platform. For reentry, only G force is simulated as the aero-acoustic noise is insignificant compared to that during launch. The shuttle G-force profiles of launch and landing are achieved by programming the centrifuge drive computer to continuously adjust centrifuge rotational speed to obtain the correct launch and landing G forces. The shuttle launch acoustic environment is simulated using a high-power, low-frequency audio system. Accelerometer data from STS-56 and microphone data from STS-1 through STS-5 are used as baselines for the simulations. This paper provides a description of the test setup and the results of the simulation with recommendations for follow-on simulations.
    Keywords: SPACE TRANSPORTATION
    Type: NASA. Goddard Space Flight Center, Eighteenth Space Simulation Conference: Space Mission Success Through Testing; p 349-371
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Simulation of Hypo-and Hyper-Gravity Locomotion (1994)
    In:  Other Sources
    Details
    Publication Date: 2019-07-17
    Description: We have proposed a novel method of using air pressure to apply an external axial force to the body, coincident with the body's center of mass, that has the potential of enabling Earth-equivalent musculoskeletal forces in space. By reversing the direction of the pressure differential, walking and running at reduced musculoskeletal levels are possible on Earth. We hypothesize that hypo- and hyper-g walking and running can be adequately simulated by this method of loading since gait is primarily governed by gravity acting at the center of mass and only secondarily by its distributed action on limb segments. We report here results from simulated hyper-g walking and running.
    Keywords: Man/System Technology and Life Support
    Type: Biomedical Engineering Symposium; May 13, 1994; Davis, CA; United States
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
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