DDC-IRA ••Analytical Investigation of Combustion Instability in Solid Propellant Rockets" ARPA Order Number 24-61 Project Code Number 9100 Date of Contract: June 23, 1961 Contract Expiration Date; July 31, 1962 Amount of Contract: $7 3, 056 Contract Number: AF 49(638)-1094 Contractor: Armour Research Foundation of Illinois Institute of Technology Project Scientist: Dr. T. Paul Torda CAlumet 5-9...

Simulating solid propellant rocket motors requires solving an extremely complex, fully coupled multidisciplinary physics problem that spans a wide range of length and time scales. We have taken a staged approach in developing an integrated whole-system rocket simulation package, beginning with relatively simple physical models, geometries, and coupling in our first-generation code (GEN1), and p...

In the combustion stability assessment of solid propellant rocket motors, several new destabilizing terms are introduced when rotational-flow effects are properly accounted for. Such effects must be included when the wave motion is parallel to the burning surface. A normal fluctuating velocity component then appears in a careful resolution of intrinsic fluid dynamics, including acoustico–vortic...