Accession Number : AD0759559

Title :   User's Manual for Nozzleless Rocket Motor Internal Ballistics Computer Program

Descriptive Note : Technical rept. 1 Jun 1972-31 Jan 1973

Corporate Author : LOCKHEED PROPULSION CO REDLANDS CA

Personal Author(s) : Harry, III, David P ; Price, Chan F ; Small, Kenneth R ; Taylor, Donald E

PDF Url : AD0759559

Report Date : Mar 1973

Pagination or Media Count : 82

Abstract : The objective of this work was to develop a CDC 6400 FORTRAN computer program capable of accurately predicting the internal ballistics of motors designed for operation without nozzles. To accomplish this, previously obtained data were examined in detail. In addition, 12 motors were fabricated and test fired to augment the range of available test data. The computer program developed had to consider the effects of erosive burning, grain deflection, and incomplete metal combustion upon nozzleless motor performance. Input requires knowledge of motor geometry, propellant thermochemistry, base burn rate, and specification of erosive burning and grain deflection parameters. Comparisons of predicted and actual results show that where an adequate data base exists, with regard to erosive burning and grain deflection effects, accurate predictions will be provided by the computer program.

Descriptors :   *COMPUTER PROGRAMS, *INSTRUCTION MANUALS, *INTERIOR BALLISTICS, *SOLID PROPELLANT ROCKET ENGINES, COMBUSTION, MATHEMATICAL MODELS, ROCKET ENGINE CASES, SOLID ROCKET PROPELLANTS, SUBSONIC FLOW

Subject Categories : Computer Programming and Software
      Ballistics
      Solid Propellant Rocket Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE