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Drag and stability characteristics of a variety of reefed and unreefed parachute configurations at Mach 1.80 with an empirical correlation for supersonic Mach numbersAn investigation was conducted at Mach 1.80 in the Langley 4-foot supersonic pressure tunnel to determine the effects of variation in reefing ratio and geometric porosity on the drag and stability characteristics of four basic canopy types deployed in the wake of a cone-cylinder forebody. The basic designs included cross, hemisflo, disk-gap-band, and extended-skirt canopies; however, modular cross and standard flat canopies and a ballute were also investigated. An empirical correlation was determined which provides a fair estimation of the drag coefficients in transonic and supersonic flow for parachutes of specified geometric porosity and reefing ratio.
Document ID
19750007612
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Technical Report (TR)
Authors
Couch, L. M. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 3, 2013
Publication Date
February 1, 1975
Subject Category
Spacecraft Design, Testing And Performance
Report/Patent Number
L-9265
NASA-TR-R-429
Accession Number
75N15684
Funding Number(s)
PROJECT: RTOP 760-17-01-11
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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