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Reusable Solid Rocket Motor Nozzle Joint 5 RedesignTorque tension testing of a newly designed Reusable Solid Rocket Motor nozzle bolted assembly was successfully completed. Test results showed that the 3-sigma preload variation was as expected at the required input torque level and the preload relaxation were within the engineering limits. A shim installation technique was demonstrated as a simple process to fill a shear lip gap between nozzle housings in the joint region. A new automated torque system was successfully demonstrated in this test. This torque control tool was found to be very precise and accurate. The bolted assembly performance was further evaluated using the Nozzle Structural Test Bed. Both current socket head cap screw and proposed multiphase alloy bolt configurations were tested. Results indicated that joint skip and bolt bending were significantly reduced with the new multiphase alloy bolt design. This paper summarizes all the test results completed to date.
Document ID
Acquisition Source
Marshall Space Flight Center
Document Type
Preprint (Draft being sent to journal)
Lui, R. C.
(ATK-Thiokol Propulsion Brigham City, UT, United States)
Stratton, T. C.
(ATK-Thiokol Propulsion Brigham City, UT, United States)
LaMont, D. T.
(ATK-Thiokol Propulsion Brigham City, UT, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 2003
Subject Category
Aircraft Propulsion And Power
Meeting Information
Meeting: 35th International SAMPE Technical Conference
Location: Dayton, OH
Country: United States
Start Date: September 28, 2003
End Date: October 2, 2003
Funding Number(s)
Distribution Limits
Work of the US Gov. Public Use Permitted.
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