PROJECT SOPHY - SOLID PROPELLANT HAZARDS PROGRAM. VOLUME 2. APPENDIXES
Abstract
The critical diameter of a typical composite propellant was determined to be between 60 and 72 in. The selection of test sample sizes was facilitated by the detonation model developed during the solid propellant hazards program. The final form of the critical geometry relationship states that for any shape other than the right solid circular cylinder, four times the cross sectional area of the critical sample, divided by its total perimeter, equals 92% of the critical diameter. The minimum shock pressure required to initiate detonation of composite propellant is estimated to be 25 to 30 kbar for a critical size sample, and 8 to 10 kbar for an ideal diameter sample. New techniques were developed to prepare and characterize porous and cracked propellant samples. Correlations of the blast and fireball data from 22 propellant tests have been made. The average TNT equivalence of the peak overpressure data is 197%. The average TNT equivalence of the positive-phase impulse data is 138%, for those samples that detonated.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1967
- Accession Number
- AD0819301
Entities
People
- Owen R. Irwin
- Richard W. Vail Jr
- Robert B. Elwell
Organizations
- Aerojet Rocketdyne Holdings