Solid Propellant Structural Test Vehicle Program
Abstract
Results of the third year of the Structural Test Vehicle (STV) program conducted by Lockheed Propulsion Company for AFRPL are presented. Improved computer codes were used for viscoelastic analyses of a diaphragm gage in a uniaxial propellant specimen subject to constant stress, constant strain, and cyclic tests. A three-dimensional computer code was used to analyze a shear cube under simple loading conditions and to confirm experimental findings that the interference problem is minimal and that a slight cross sensitivity exists. Experimental data show the performance of shear gages in a biaxial (diametral compression) stress field and under cyclical shear loading. Results of restrained cooling and heating tests are presented and compared with analysis. Dilatational experimental and analytical work suggests an improved approach for the determination of thermal strain in a circular port grain. Improved material characterization techniques are also described. Results of thermal cycling and cooling experiments on 4-point-star, inert-propellant STV No. 6 are given. Gage readings measured during the tests are discussed and compared with analysis. A technique for removal of gages from old motors and STVs by chemical milling is discussed. Finally a modified system is described for coding microfilm data of STV, and inert propellant and gage calibration data.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1972
- Accession Number
- AD0893748
Entities
People
- H. Leeming
- K. Pister
- M. L. Williams
- Rebekah T. Taylor
- W. S. Brown
Organizations
- Lockheed Propulsion Company