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Rocket Engine Thrust Chamber AssemblyA thrust chamber assembly for liquid fueled rocket engines and the method of making it wherein a two-piece mandrel having the configuration of an assembly having a combustion chamber portion connected to a nozzle portion through a throat portion is wrapped with a silica tape saturated with a phenolic resin, the tape extending along the mandrel and covering the combustion chamber portion of the mandrel to the throat portion. The width of the tape is positioned at an angle of 30 to 50 deg. to the axis of the mandrel such that one edge of the tape contacts the mandrel while the other edge is spaced from the mandrel. The phenolic in the tape is cured and the end of the wrap is machined to provide a frusto-conical surface extending at an angle of 15 to 30 deg. with respect to the axis of the mandrel for starting a second wrap on the mandrel to cover the throat portion. The remainder of the mandrel is wrapped with a third silica tape having its width positioned at a angle of 5 to 20 deg. from the axis of the mandrel. The resin in the third tape is cured and the assembly is machined to provide a smooth outer surface. The entire assembly is then wrapped with a tow of graphite fibers wetted with an epoxy resin and, after the epoxy resin is cured, the graphite is machined to final dimensions.
Document ID
20020005117
Acquisition Source
Marshall Space Flight Center
Document Type
Other - Patent
Authors
Cornelius, Charles S. (NASA Marshall Space Flight Center Huntsville, AL United States)
Counts, Richard H. (NASA Marshall Space Flight Center Huntsville, AL United States)
Myers, W. Neill (NASA Marshall Space Flight Center Huntsville, AL United States)
Lackey, Jeffrey D. (NASA Marshall Space Flight Center Huntsville, AL United States)
Peters, Warren (NASA Marshall Space Flight Center Huntsville, AL United States)
Shadoan, Michael (NASA Marshall Space Flight Center Huntsville, AL United States)
Sparks, David L. (NASA Marshall Space Flight Center Huntsville, AL United States)
Lawrence, Timothy W. (NASA Marshall Space Flight Center Huntsville, AL United States)
Date Acquired
August 20, 2013
Publication Date
March 6, 2001
Subject Category
Spacecraft Propulsion And Power
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-Case-MFS-31138-1|US-Patent-6,195,984
Patent Application
US-Patent-Appl-SN-228034

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