Integrated Structural and Ballistic Design Curves for Star-Perforated Propellant Grains.
LOCKHEED PROPULSION CO REDLANDS CA
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Preliminary design data pertaining to the structural and internal ballistic design of star-perforated solid rocket grains are presented in a novel integrated format. Measures of volumetric loading, propellant silver, and burning uniformity are depicted for star geometries of 4, 5, 6, 7, and 8 points. Structural characteristics are related to these performance parameters through a series of transparent overlay graphs that are designed to be superimposed on the ballistic data graphs. Structuring of the data in this manner enables the designer to determine visually on a single graph the combined ballistic and structural characteristics that best meet design requirements for preliminary design purposes. Instructions for using the data presented are illustrated through examples problems. To facilitate the structural interpretations, tables of typical structural loads and average propellant properties are included. The technical basis for the parametric data is described in detail, and the accuracy of the results is related to previous photoelastic and computer analyses. Author
- Solid Rocket Propellants