DEVELOPMENT OF TEST METHODS FOR THE FIVE-INCH AIR GUN
FRANKFORD ARSENAL PHILADELPHIA PA PHILADELPHIA United States
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The program has resulted in a start to perfecting a test methodology for materials tested in the 5-Inch Air Gun. Using the O-Ring Seal method repeatable shocks can be applied. Further work will be required to provide a variable shock pulse. This can be accomplished by providing controlled air flow to the rear of the projectile. One method of doing this is to vary the size and configuration of the orifice holes. Although some measurements have been obtained with the existing measurement system, further effort will be required to refine the instrumentation techniques. Perfection of the measuring method in future work will result in the ability to obtain a large amount of data. It will then be possible to compare the air gun data with field data. The comparison of this data by existing computer programs will provide a basis for perfecting air gun simulation techniques. The number of different pulses obtainable is unlimited with application of the O-Ring Seal Method. The two part chamber insert design is more economical than a single unit, since in this case many orifice configurations can be made and tried more cheaply than with the one part design.
- Test Facilities, Equipment and Methods