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Study of Parachute Forces and Canopy Pressure Distribution Measured in a Subsonic Wind Tunnel under Infinite Mass Conditions
Final rept. 1 Aug 1969-15 Aug 1971
MINNESOTA UNIV MINNEAPOLIS
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For the purpose of parachute canopy stress analysis during the period of inflation, the pressure distribution measured on a ring-slot parachute model is related to the instantaneous parachute force. The correlation of pressure and force data is based on test results established at the Deutsche Forschungsanstalt fuer Luft-und Raumfahrt DFLR, Braunschweig, Germany. The final pressure-force-time relationship incorporate individual as well as averaged test data. A fair agreement could be shown between measured forces and those obtained from numerical integration of differential pressure over the canopy surface.
APPROVED FOR PUBLIC RELEASE