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Ceramic regenerator programThe feasibility of fabricating an Air Turbo Ramjet (ATR) regenerator containing intricate hydraulic passages from a ceramic material in order to allow operation with high temperature combustion gas and to reduce weight as compared with metallic materials was demonstrated. Platelet technology, ceramic tape casting, and multilayer ceramic packaging techniques were used in this fabrication of subscale silicon nitride components. Proof-of-concept demonstrations were performed to simulate a methane cooled regenerator for an ATR engine. The regenerator vane was designed to operate at realistic service conditions, i.e., 600 psi in a 3500 R (3040 F), 500 fps combustion gas environment. A total of six regenerators were fabricated and tested. The regenerators were shown to be able to withstand internal pressurization to 1575 psi. They were subjected to testing in 500 fps, 3560 R (3100 F) air/propane combustion products and were operated satisfactorily for an excess of 100 hr and 40 thermal cycles which exceeded 2460 R (2000 F).
Document ID
19920005156
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Franklin, Jerrold E. (Aerojet-General Corp. Sacramento, CA, United States)
Date Acquired
September 6, 2013
Publication Date
November 1, 1991
Subject Category
Mechanical Engineering
Report/Patent Number
RPT/F0094.93A
KFF-FR
NASA-CR-189053
NAS 1.26:189053
Accession Number
92N14374
Funding Number(s)
CONTRACT_GRANT: NAS3-25416
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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