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Aerodynamic characterization of new parachute configurations for low-density deceleration

Show simple item record Tanner, Christopher L. Clark, Ian G. Gallon, John C. Rivellini, Tommaso P. Witkowski, Allen 2014-01-21T16:38:00Z 2014-01-21T16:38:00Z 2013-03-26
dc.identifier.citation 22nd AIAA Aerodynamic Decelerator Systems Technology Center, Daytona Beach, Florida, March 25-28, 2012 en_US
dc.identifier.clearanceno 13-1315
dc.description.abstract The Low Density Supersonic Decelerator project performed a wind tunnel experiment on the structural design and geometric porosity of various sub-scale parachutes in order to inform the design of the 110ft nominal diameter flight test canopy. Thirteen different parachute configurations, including disk-gap-band, ring sail, disk sail, and star sail canopies, were tested at the National Full-scale Aerodynamics Complex 80- by 120-foot Wind Tunnel at NASA Ames Research Center. Canopy drag load, dynamic pressure, and canopy position data were recorded in order to quantify there lative drag performance and stability of the various canopies. Desirable designs would yield increased drag above the disk-gap-band with similar, or improved, stability characteristics. Ring sail parachutes were tested at geometric porosities ranging from 10% to 22% with most of the porosity taken from the shoulder region near the canopy skirt. The disk sail canopy replaced the rings lot portion of the ring sail canopy with a flat circular disk and wastested at geometric porosities ranging from 9% to 19%. The star sail canopy replaced several ringsail gores with solid gores and was tested at 13% geometric porosity. Two disk sail configurations exhibited desirable properties such as an increase of 6-14% in the tangential force coefficient above the DGB with essentially equivalent stability. However, these data are presented with caveats including the inherent differences between wind tunnel and flight behavior and qualitative uncertainty in the aerodynamic coefficients. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2013 en_US
dc.subject data acquisition system (DAS) en_US
dc.subject Low Density Supersonic Decelerator (LDSD) en_US
dc.subject National Full-scale Aerodynamics Complex (NFAC) en_US
dc.subject parachute en_US
dc.title Aerodynamic characterization of new parachute configurations for low-density deceleration en_US
dc.type Preprint en_US

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