Methodology Investigation of 120-mm Differential Weapon Chamber Pressure Measurement.
Final rept. Jun-Dec 84,
ARMY COMBAT SYSTEMS TEST ACTIVITY (PROV) ABERDEEN PROVING GROUND MD
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A methodology investigation was conducted to improve the quality of chamber pressure measurement in the 120-mm gun. Two 105-mm gun tubes were each drilled to accept two sets of pressure gages for a comparison of gage performance. An evaluation of the Kistler 6211, Yuma T-8, and Yuma ES15 gages demonstrated that static calibration of gages does not eliminate the possibility of poor gage performance. Anomalies in differential pressure records were observed to have a detrimental effect on differential peak pressures for some rounds, and a negligible effect on other rounds. A formal logbook of gage performance under firing conditions is recommended as a necessary step in improving pressure measurement. Also recommended is a shooting test of gages in gun tubes drilled similarly to those in this report, to compare gage under controlled fire conditions. In addition to a shooting test of gages, specific actions are recommended to determine the cause of the difference between the performance of gages during static calibration and the performance in a gun tube. Keywords Differential pressure measurement Kistler 6211 pressure gage Yuma T-8 pressure gage Yuma ES15 pressure gage.
- Test Facilities, Equipment and Methods