Quarterly technical progress rept. 15 Jun-14 Sep 1964
STANFORD RESEARCH INST MENLO PARK CA
Pagination or Media Count:
The donor-attenuator system used in the shock sensitivity measurements was calibrated in the region, 70-150 kbars. The effect of the continuous wire upon apparent sensitivity was studied whereas the sensitivity of 1,2-DP appears to be independent of wire length, that of nitromethane is not. A method is suggested and used for avoiding this difficulty. The sensitivity of 1,2-DP is independent of diameter for diameters more than twice the failure diameter. Revised sensitivity values are reported. These are based on the new calibration and are for samples of large diameter tested to minimize the effect of the sensor. The uncertainty reflects imprecision in the attenuator calibration, not in the raw test results. Low velocity waves of approximately 1.8 mmmicrosecond have been produced in 90 nitromethane -10 tetranitromethane mixtures. Transit time measurements have been made on 1,2DP contained in smooth- bore holes in lead blocks.
- Ammunition and Explosives
- Solid Rocket Propellants