Accession Number:

ADA029052

Title:

Aeroheat Structural Test Vehicles: Design, Instrumentation, Manufacture, and Calibration.

Descriptive Note:

Technical rept.,

Corporate Author:

MORTON THIOKOL INC HUNTSVILLE AL HUNTSVILLE DIV

Personal Author(s):

Report Date:

1976-08-01

Pagination or Media Count:

152.0

Abstract:

Six aeroheat motors 6-inch I.D. by 24-inch long were designed, instrumented, and manufactured. All six motors were C.P. configurations with the web fractions based on producing a bore strain of 75, 100 and 125 of the propellant strain endurance when the motors were at -65 F. Three of the motors referred to as AH-1, AH-2, and AH-3 were loaded with TP-H8227 propellant a 88 total solids, low rate formulation containing 6.6 HMX to web fractions of 0.77, 0.80, and 0.82, respectively. The remaining three motors - AH-4, AH-5, and AH-6 were loaded with TP-H8220 propellant a 88 total solids high rate formulation and had web fractions of 0.79, 0.76, and 0.81, respectively. Four motors did fail during gage checkout. Investigating the fact that these failed at strain levels less than strain endurance revealed that each had failed over the thermocouple array which led to the conclusion that the thermocouple itself was the cause of failure. A description of the motor failures, along with a discussion of the motor design, the grain instrumentation, the motor manufacture procedures and instrumentation methods, the test arrangement, data acquisition procedures, data reduction methods, and the test results are presented in the body of this report.

Subject Categories:

  • Solid Propellant Rocket Engines
  • Solid Rocket Propellants

Distribution Statement:

APPROVED FOR PUBLIC RELEASE