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Cyclic fatigue analysis of rocket thrust chambers. Volume 2: Attitude control thruster high cycle fatigueA finite element stress analysis was performed for the film cooled throat section of an attitude control thruster. The anlaysis employed the RETSCP finite element computer program. The analysis included thermal and pressure loads, and the effects of temperature dependent material properties, to determine the strain range corresponding to the thruster operating cycle. The configuration and operating conditions considered, correspond to a flightweight integrated thruster assembly which was thrust pulse tested. The computed strain range was used in conjuction with Haynes 188 Universal Slopes minimum life data to predict throat section fatigue life. The computed number of cycles to failure was greater than the number of pulses to which the thruster was experimentally subjected without failure.
Document ID
19740026130
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Miller, R. W. (Atkins and Merrill, Inc. Ashland, MA, United States)
Date Acquired
September 3, 2013
Publication Date
June 1, 1974
Subject Category
Propulsion Systems
Report/Patent Number
NASA-CR-134641-VOL-2
Accession Number
74N34243
Funding Number(s)
CONTRACT_GRANT: NAS3-17807
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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