Skip to Main Content
 

Global Search Box

 
 
 
 

Files

File List


19587.pdf (5.1 MB)

ETD Abstract Container

Abstract Header

Spacesuit and Portable Life Support System Center of Gravity Influence on Astronaut Kinematics, Exertion and Efficiency

Sridhar, Siddharth
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1447690750

Abstract Details

2015, MS, University of Cincinnati, Engineering and Applied Science: Aerospace Engineering.
NASA has initiated a series of tests aimed at understanding human physiological and biomechanical effects of spacesuits under a variety of conditions. Though these tests include metabolic rates, ground reaction forces, biomechanics, subjective workload and controllability feedback, the influences (kinematics, exertion and efficiency) of a combined spacesuit and portable life support system (PLSS) center of gravity (CG) during an astronaut’s extravehicular task performance has not been completely understood. The work described in this thesis was aimed at developing a quantitative means of evaluating the influence of space suit and PLSS CG location on astronaut EVA task performance in terms of kinematics (joint angular ranges), exertion (joint torques and muscle forces), and efficiency (comparative work performed). Four CG locations, representing approximate CG extremes for the NASA MK III and Z1 space suits, were evaluated using a combined experimental and computational approach. Three common EVA tasks were studied: object translation, climbing and walking. It was found that the Low-Aft CG was the best for object translation, the High-Forward CG for walking and the Low-Forward CG for climbing.
Grant Schaffner, Ph.D. (Committee Chair)
Kelly Cohen, Ph.D. (Committee Member)
Kristin Yvonne Rozier, Ph.D. (Committee Member)
76 p.
Aerospace Materials
Spacesuit CG; Center of Gravity; Astronaut exertion; PLSS CG; Astronaut kinematics; Astronaut efficiency

Recommended Citations

Citations

  • Sridhar, S. (2015). Spacesuit and Portable Life Support System Center of Gravity Influence on Astronaut Kinematics, Exertion and Efficiency [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1447690750

    APA Style (7th edition)

  • Sridhar, Siddharth. Spacesuit and Portable Life Support System Center of Gravity Influence on Astronaut Kinematics, Exertion and Efficiency. 2015. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1447690750.

    MLA Style (8th edition)

  • Sridhar, Siddharth. "Spacesuit and Portable Life Support System Center of Gravity Influence on Astronaut Kinematics, Exertion and Efficiency." Master's thesis, University of Cincinnati, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1447690750

    Chicago Manual of Style (17th edition)

ucin1447690750
435
© 2015, all rights reserved.
This open access ETD is published by University of Cincinnati and OhioLINK.