Eight Jet Propulsion Laboratory JPL-SR-28-3 solid-propellant rocket motors were test fired under the combined effects of rotational spin at 100 rpm, temperature conditioning at 100 F (4 motors) and 40 F (4 motors), and an average pressure altitude in excess of 100,000 ft, as the Qualification Test Phase of the Applications Technology Satellite Apogee Motor Program. The primary objective of the program was to determine motor performance during simulated flight conditions. Secondary objectives were to measure motor case and nozzle temperatures for 300 sec after ignition and to evaluate the motor case and nozzle structural integrity. Motor performance is presented and compared with data from earlier AEDC test firings of the same type of motor. (Author)


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