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flight tests of viking parachute system in three mach number regimes. 2: parachute test resultsTests of the Viking 16.15-meter nominal-diameter disk-gap-band parachute were conducted at Mach number and dynamic pressure conditions which bracketed the range postulated for the Viking '75 mission to Mars. Parachutes were deployed at supersonic, transonic, and subsonic speeds behind a simulated Viking entry capsule. All parachutes successfully deployed, inflated, and exhibited sufficient drag and stability for mission requirements. Basic parachute data including loads, drag coefficients, pull-off angles, and canopy area ratios are presented. Trajectory reconstruction and onboard camera data methods were combined to yield continuous histories of both parachute and test-vehicle angular motions which are presented for the period from parachute deployment through steady inflation.
Document ID
19750002913
Document Type
Other - NASA Technical Note (TN)
Authors
Bendura, R. J.
(NASA Langley Research Center Hampton, VA, United States)
Lundstrom, R. R.
(NASA Langley Research Center Hampton, VA, United States)
Renfroe, P. G.
(NASA Langley Research Center Hampton, VA, United States)
Lecroy, S. R.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 3, 2013
Publication Date
November 1, 1974
Subject Category
SPACECRAFT DESIGN, TESTING AND PERFORMANCE
Report/Patent Number
L-9537
NASA-TN-D-7734
Funding Number(s)
PROJECT: RTOP 815-20-09-03
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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