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Qualification of improved joint heatersQualification testing of the Redesigned Solid Rocket Motor improved igniter-to-case joint and field joint heaters was conducted on the fired TEM-04 static test motor and was completed on 7 Sep. 1989. The purpose of the test was to certify the installation and performance of the improved joint heaters for use on flight motors. The changes incorporated in the improved heaters improve durability and should reduce handling damage. The igniter-to-case joint and field joint primary heater circuits were subjected to five 20-hr ON cycles. The heater redundant circuits were then subjected to one 20-hr ON cycle. Voltage, current, and temperature set point values were maintained within the specified limits for both heaters during each ON cycle. When testing was complete, both heaters were removed and inspected. No discolorations or any other anomalies were found on either of the heaters. Based on the successful completion of this test, it is recommended that the improved igniter-to-case joint and field joint heaters be used on future flight motors.
Document ID
19900004278
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Cook, M.
(Thiokol Corp. Brigham City, UT, United States)
Date Acquired
September 6, 2013
Publication Date
September 14, 1989
Subject Category
Spacecraft Propulsion And Power
Report/Patent Number
NAS 1.26:183827
TWR-19899
NASA-CR-183827
Accession Number
90N13594
Funding Number(s)
CONTRACT_GRANT: NAS8-30490
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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