Accession Number:

ADA279640

Title:

Modeling Platform Dynamics and Physiological Response to Short Arm Centrifugation

Descriptive Note:

Final rept. 7 May-17 Dec 1993

Corporate Author:

BIODYNAMIC RESEARCH CORP SAN ANTONIO TX

Report Date:

1994-03-01

Pagination or Media Count:

165.0

Abstract:

An analysis is presented for the operation of a short radius centrifuge on an orbiting platform. A review of literature confirms that such a centrifuge could be useful in ameliorating the effects of microgravity deconditioning of astronauts. Our analysis indicates that operation of the centrifuge could generate potentially destabilizing forces and moments. Several ideas for reducing or eliminating the forces and moments are discussed. The use of pedals to drive the centrifuge and exercise the rider is also described. Excess power from pedaling could be stored as electrical energy. A mathematical model of the human cardiovascular system indicates that centrifugation at a short radius would indeed stimulate the heart, even though there is a significant acceleration gradient from head to toe. Consideration of the disorienting effects of short radius centrifugation reveals that discomfort originating in the otoliths from the lack of gravity would probably be alleviated however, the angular motion of the centrifuge would likely cause disorientation or discomfort through the semicircular canals. Acceleration physiology, Short arm centrifuge, Cardiovascular modeling, Torque balancing mechanism Microgravity countermeasures,

Subject Categories:

  • Stress Physiology
  • Astronautics
  • Manned Spacecraft

Distribution Statement:

APPROVED FOR PUBLIC RELEASE