Accession Number:

AD0868295

Title:

Solid Propellant Structural Test Vehicle and Systems Analysis.

Descriptive Note:

Final rept. 1 Aug 68-30 Sep 69,

Corporate Author:

LOCKHEED PROPULSION CO REDLANDS CA

Report Date:

1970-03-01

Pagination or Media Count:

294.0

Abstract:

This report covers the second year of a program for the development of instrumented Structural Test Vehicles STVs and systems analysi for solid propellant motor design. The work follows that described in AFRPL-TR-68-130. This report supplements and uses data given in that earlier report. Additional data for 0064-61E propellant, Solithane 113 elastomer, and a new inert propellant are detailed. The problems of STV grain analysis, gage-grain interaction, and gage output interpretation, i.e., calibration techniques, also are covered. Nonisothermal grain analysis remains the largest problem area. Failure prediction for STVs and inert analog motors is discussed. Predictions are based on conventional techniques, fracture mechanics, and cumulative damage approaches. STV test data are presented for isothermal pressurization, slow cooling and heating, and transient or temperature cycling conditions. Data include failure tests on STVs and inert analog motors. Details of a new STV also are presented. The data are compared with analytical predictions to show that despite improved analyses and extensive propellant characterization, predictions of grain stresses and failure leave much to be desired. Further work is described on methods of applying systems analysis to motor design. The relation of engineering parameters to propellant chemistry is reviewed, and further work is described on an interaction analysis of material properties, motor design, and mission parameters. Author

Subject Categories:

  • Test Facilities, Equipment and Methods
  • Solid Propellant Rocket Engines
  • Solid Rocket Propellants

Distribution Statement:

APPROVED FOR PUBLIC RELEASE