ASDA - Advanced Suit Design Analyzer Computer Program

Paper #:
  • 921381

Published:
  • 1992-07-01
Citation:
Bue, G., Conger, B., Iovine, J., and Chang, C., "ASDA - Advanced Suit Design Analyzer Computer Program," SAE Technical Paper 921381, 1992, https://doi.org/10.4271/921381.
Pages:
12
Abstract:
ASDA was developed to evaluate the heat and mass transfer characteristics of advanced pressurized suit design concepts for use in low pressure or vacuum planetary environments. The model incorporates a generalized 3-layer suit, constructed with the Systems Integrated Numerical Differencing Analyzer '85 (SINDA '85), with a 41- node FORTRAN routine that simulates the transient heat transfer and respiratory processes of a human body in a suited environment. User options for the suit include a liquid cooled garment, a removable jacket, a CO2/H2O permeable layer and a phase change layer. The model also has an option to isolate flowing oxygen in the helmet from stagnant or flowing gas in the torso and limbs. Options for the environment include free and forced convection with a user input atmosphere, incident solar/infrared fluxes, radiation to a background sink and radiation and conduction to a surface. Results from a study of Mars suit concepts will also be presented. Future plans to upgrade this model to include closed-loop simulations of the vent and coolant streams will be discussed.
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