This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Automatic Thermal Control Through a LCVG for a Spacesuit
Technical Paper
1999-01-1970
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Automatic thermal control (ATC) was investigated for implementation into a spacesuit to provide thermal neutrality to the astronaut through a range of activity levels. Two different control concepts were evaluated and compared for their ability to maintain subject thermal comfort. Six test subjects, who were involved in a series of three tests, walked on a treadmill following specific metabolic profiles while wearing the Mark III spacesuit in ambient environmental conditions.
Results show that individual subject comfort was effectively provided by both algorithms over a broad range of metabolic activity. ATC appears to be highly effective in providing efficient, “hands-off” thermal regulation requiring minimal instrumentation. Final selection of an algorithm to be implemented in an advanced spacesuit system will require testing in dynamic thermal environments and consideration of technology for advancement in instrumentation and controller performance.
Recommended Content
Technical Paper | Dynamic Modeling of the Minimum Consumables PLSS |
Technical Paper | Optimal Preview Control Design of Active and Semi-Active Suspension Systems Including Jerk |
Technical Paper | Determination of Human Thermal Experimental Uncertainty |
Authors
Citation
Nyberg, K. and O’Connell, M., "Automatic Thermal Control Through a LCVG for a Spacesuit," SAE Technical Paper 1999-01-1970, 1999, https://doi.org/10.4271/1999-01-1970.Also In
References
- Dunaway, B. Automatic Liquid and Ventilation Cooling Garment Control Algorithm Final Test Report CTSD-SS-176 November 22 1988
- Iovine, J.V. EMU Automatic Thermal Control Using an Interpolation Algorithm to Adjust Inlet Water Temperature to the Liquid Cooling Garment NAS 915800, LEMSCO-21628 May 5 1985
- Iovine, J.V. Liquid Cooling Garment Automatic Thermal Control Test Summary LEMSCO-23523 January 1987
- Iovine, J.V EMU SINDA Model Verification Upgrades Report NAS 9-19100, LMES-32332 November 1996
- Kuznetz, L.H. Automatic Control of Human Thermal Comfort With a Liquid-Cooled Garment NASA TM-58205 September 1977
- Nyberg, K.L Design and Evaluation of Automatic Control for Human/Liquid Cooling Garment Thermal Interaction, Ph.D. Dissertation The University of Texas at Austin August 1998
- Nyberg, K.L. O’Connell, M.K. Space Suit Automatic Thermal Control Test Plan and Procedures CTSD-ADV-346, JSC 39160 October 6 1998
- Webb, P. Nagle, F.J. Wanta, D.M. Heat Regulation During Exercise with Controlled Cooling Eur J Appl Physiol 62 193 197 1991