Some Aspects of Shaped Charge Jet Direct Impact Upon a Propellant Bed
Final rept. Dec 1988-Jan 1991
ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
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The response of candidate low vulnerability ammunition LOVA propellants to a Shaped Charge Jet Direct Impact SCJDI is evaluated with tests which are designed in such a way as to constitute a sequence in which the test severity increases at each step. A propellent is rejected if it fails to pass a test along the way. If it passes, it is eligible for the next more severe tests in the sequence. This report deals with one test of this sequence. Here, the response of the propellant charge is first evaluated by using a witness plate. If the propellent shows a moderate level of response, a more quantitative evaluation Is performed with an instrumented block equipped with pressure gages. Following changes in the test configuration, the amount of propellant under test was significantly reduced. In spite of this reduction, a propellant candidate showed a much increased level of response to the SCJDI. A study was undertaken In order lo determine which test configuration parameter was affecting the outcome of the test. The geometry of the test configuration was hypothesized to be the most important because of suspected wave reflections. Recommendations concerning the operating procedures for the SCJDI test are provided. LOVA propellants Shaped charge jets Threat evaluation Instrumented block Witness plate.
- Ammunition and Explosives