Drag and Stability Characteristics of a Variety of Reefed and Unreefed Parachute Configurations at Mach 1.80 with an Empirical Correlation for Supersonic Mach Numbers
National Aeronautics and Space Administration, 1975 - Aerodynamics, Supersonic - 109 pages
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area ratio Available from DDC ballute bow shock breathing and coning breathing frequency canopy asymmetry canopy inlet canopy shape CANOPY TYPE POROSITY coefficient with Mach Config configuration 32 Confluence point conical shock wave coning frequency coning motions constructed reefing ratio cross parachute Dacron decelerator deployment Disk-gap-band canopies Disk-Gap-Band Parachutes double shock-wave pattern downstream shock wave drag and stability drag coefficient increases dynamic pressure equation 11 exit area experimental data Extended skirt extended-skirt canopies extensive fabric flutter geometric porosity hemisflo canopies hemisflo parachute inflated disk inflated reefing ratio inlet area inlet diameter investigation Langley Research Center large coning angles leading edge Mach number Modular cross canopy NASA occasional slack suspension oscillograph photographic data porosity and reefing presented in figure reefing line ribbon flutter schlieren slack suspension line stagnation pressure standard flat canopy supersonic transonic tunnel U.S. Air Force underinflated unreefed parachutes variation of drag varied from approximately warp3 wind-tunnel