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Record Details

Record 66 of 1890
Development and in-flight performance of the Mariner 9 spacecraft propulsion system
Author and Affiliation:
Evans, D. D.
Cannova, R. D.
Cork, M. J.(California Institute of Technology, Jet Propulsion Laboratory, Pasadena, Calif., United States)
Abstract: On November 14, 1971, Mariner 9 was decelerated into orbit about Mars by a 1334 N (300 lbf) liquid bipropellant propulsion system. This paper describes and summarizes the development and in-flight performance of this pressure-fed, nitrogen tetroxide/monomethyl hydrazine bipropellant system. The design of all Mariner propulsion subsystems has been predicted upon the premise that simplicity of approach, coupled with thorough qualification and margin-limits testing, is the key to cost-effective reliability. The qualification test program and analytical modeling are also discussed. Since the propulsion subsystem is modular in nature, it was completely checked, serviced, and tested independent of the spacecraft. Proper prediction of in-flight performance required the development of three significant modeling tools to predict and account for nitrogen saturation of the propellant during the six-month coast period and to predict and statistically analyze in-flight data.
Publication Date: Jan 01, 1973
Document ID:
19740042215
(Acquired Dec 04, 1995)
Accession Number: 74A24965
Subject Category: SPACE VEHICLES
Document Type: Conference Proceedings
Publication Information: (SEE A74-24961 10-31)
Publisher Information: Netherlands
Meeting Information: Astronautical research 1972; 23rd; October 8-15, 1972; Vienna; Austria
Contract/Grant/Task Num: NAS7-100
Financial Sponsor: NASA; United States
Description: 22p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: FLIGHT TESTS; LIQUID ROCKET PROPELLANTS; MARINER 9 SPACE PROBE; PROPULSION SYSTEM CONFIGURATIONS; SPACECRAFT PROPULSION; COMPUTER PROGRAMS; MATHEMATICAL MODELS; PERFORMANCE TESTS; PROPELLANT TANKS; SPACECRAFT DESIGN
Imprint And Other Notes: In: Astronautical research 1972; Proceedings of the Twenty-third Congress, Vienna, Austria, October 8-15, 1972. (A74-24961 10-31) Dordrecht, D. Reidel Publishing Co., 1973, p. 127-148.
Availability Source: Other Sources
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