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balloon launched viking decelerator test programFour BLDT flights were conducted during the summer of 1972. The purpose of these tests was to qualify the Viking parachute system behind the full-scale Viking entry vehicle over the maximum range of entry conditions anticipated in the Viking '75 soft landing on Mars. A summary of the test series is presented. Test conditions ranged from a Mach number of 2.0 to 0.5 and dynamic pressure from 11.7 to 4.4 psf. This range of conditions covers the uncertainty in entry conditions at Mars due to atmospheric and entry performance uncertainties. Emphasis is placed on parachute performance and simulated Mars entry vehicle motions as influenced by the parachute performance. Conclusions are presented regarding the ability of the parachute to perform within the operational parameters required for a successful soft Martian landing. A list of references which covers all reports in the qualification test program is included.
Document ID
19740006421
Document Type
Contractor Report (CR)
Authors
Moog, R. D.
(Martin Marietta Corp. Denver, CO, United States)
Michel, F. C.
(Martin Marietta Corp. Denver, CO, United States)
Date Acquired
September 3, 2013
Publication Date
March 1, 1973
Subject Category
SPACE VEHICLES
Report/Patent Number
TR-3720359
NASA-CR-112288
Funding Number(s)
CONTRACT_GRANT: NAS1-9000
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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