BALLISTIC SCALE-UP OF NF PROPELLANTS. 5. DEMONSTRATION FIRINGS IN TACTICAL CONFIGURATIONS
Abstract
The adaptability of high-energy NF propellants was demonstrated in three short-term development programs. The TOW launch motor, the LAW motor, and the Redeye sustainer motor were used as examples of current systems to show the utility of the unique properties of NF propellants. Using NF propellant, a case-bonded, slotted-tube grain in the TOW launch-motor configuration met all original specifications. The action time at -25 F was 0.043 seconds (0.009 seconds shorter than specified) and the total impulse was 290 lbf-sec (3 1/2 percent over the target). Propellant performance was slightly better than predicted; burning rate was 8.4 in/sec at 8266 psia, and specific impulse was 245 lbf-sec/lbm at motor conditions. The variation in motor operating pressure with temperature was half that of the tactical unit with M-7 propellant. It was concluded that NF propellants will have real utility in short-burning-time motors. In another demonstration of the good high-pressure ballistics of NF propellant, a case-bonded wagonwheel grain which was cast in an aluminum LAW case duplicated the performance of the tactical motor at 77 F in almost every respect. The Redeye demonstration motors were made using a new technique for casting end-burning grains directly in a motor case.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1967
- Accession Number
- AD0384744
Entities
People
- Stanley E. Anderson