NASA/SP-8073, NASA SPACE VEHICLE DESIGN CRITERIA (CHEMICAL PROPULSION (JUN-1973)

NASA/SP-8073, NASA SPACE VEHICLE DESIGN CRITERIA (CHEMICAL PROPULSION (JUN-1973)., Grain design for a solid propellant rocket motor frequently necessitates compromises among the conflicting requirements of ballistic performance, structural integrity, mission reliability, ‘and geometric constraints. Consequently, there must be a coordinated exchange of information among several technical disciplines, with inevitable iterations and redesign before a satisfactory motor can be produced. -The study of the structural properties of the propellant, its response to loads, and its resistance to failure is one of these vital disciplines. This study, the structural integrity analysis, may be repeated several times, each time to a different degree of scope, detail, and sophistication, before the grain design is complete. Every motor design program is different in the details and ordering of the activities that lead ultimately to a successful motor. The principles on which a structural integrity analysis is performed, however, are independent of the specific application. The formulation and statement of these principles in a form useful to the designer and analyst is the subject of this monograph