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Advanced fabrication techniques for hydrogen-cooled engine structuresDescribed is a program for development of coolant passage geometries, material systems, and joining processes that will produce long-life hydrogen-cooled structures for scramjet applications. Tests were performed to establish basic material properties, and samples constructed and evaluated to substantiate fabrication processes and inspection techniques. Results of the study show that the basic goal of increasing the life of hydrogen-cooled structures two orders of magnitude relative to that of the Hypersonic Research Engine can be reached with available means. Estimated life is 19000 cycles for the channels and 16000 cycles for pin-fin coolant passage configurations using Nickel 201. Additional research is required to establish the fatigue characteristics of dissimilar-metal coolant passages (Nickel 201/Inconel 718) and to investigate the embrittling effects of the hydrogen coolant.
Document ID
19880005065
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Buchmann, O. A. (AiResearch Mfg. Co. Torrance, CA, United States)
Arefian, V. V. (AiResearch Mfg. Co. Torrance, CA, United States)
Warren, H. A. (AiResearch Mfg. Co. Torrance, CA, United States)
Vuigner, A. A. (AiResearch Mfg. Co. Torrance, CA, United States)
Pohlman, M. J. (AiResearch Mfg. Co. Torrance, CA, United States)
Date Acquired
September 5, 2013
Publication Date
November 1, 1985
Subject Category
Structural Mechanics
Report/Patent Number
AMC-81-17928
NAS 1.26:3949
NASA-CR-3949
Accession Number
88N14447
Funding Number(s)
CONTRACT_GRANT: NAS1-14180
PROJECT: RTOP 505-33-53-14
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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