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NARC Rayon Replacement Program for the RSRM Nozzle, Phase IV Qualification and Implementation StatusThe Space Shuttle NARC Rayon Replacement Program has down-selected Enka rayon as a replacement for the obsolete NARC rayon in the nozzle carbon cloth phenolic (CCP) ablative insulators. Full qualification testing of the Enka rayon-based carbon cloth phenolic is underway, including processing, thmal/structural properties, and hot-fire subscale tests. Required thermal-structural capabilities, together with confidence in erosio/char performance in simulated and subscale hot fire tests such as Wright-Patterson Air Force Base Laser Hardened Materials Evaluation Laboratory testing, NASA-MSFC 24-inch motor tests, NASA-MSFC Solid Fuel Torch - Super Sonic Blast Tube, NASA-MSFC Plasma Torch Test Bed, ATK Thiokol Forty Pound Charge and NASA-MSFC MNASA justified the testing of the new Enka-rayon candidate on full-scale static test motors. The first RSRM full-scale static test motor nozzle, fabricated using the new Enka rayon-based CCP, was successfully demonstrated in June 2004. Two additional static test motors are planned with the new Enka rayon in the next two years along with additional A-basis property characterization. Process variation or "corner-of-the-box" testing together with cured and uncured aging studies are also planned as some of the pre-flight implementation activities with 5-year cured aging studies over-lapping flight hardware fabrication.
Document ID
Acquisition Source
Marshall Space Flight Center
Document Type
Preprint (Draft being sent to journal)
Haddock, M. Reed
(ATK-Thiokol Propulsion Brigham City, UT, United States)
Wendel, Gary M.
(ATK-Thiokol Propulsion Brigham City, UT, United States)
Cook, Roger V.
(ATK-Thiokol Propulsion Brigham City, UT, United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 2005
Subject Category
Spacecraft Propulsion And Power
Meeting Information
Meeting: 41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference
Location: Tucson, AZ
Country: United States
Start Date: July 10, 2005
End Date: July 13, 2005
Sponsors: Society of Automotive Engineers, Inc., American Society of Mechanical Engineers, American Society for Electrical Engineers, American Inst. of Aeronautics and Astronautics
Funding Number(s)
Distribution Limits
Public Use Permitted.
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