AIR BLAST GAGE STUDIES
ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
Pagination or Media Count:
The purpose of Project 3.30 of Operation Upshot-Knothole was to develop and proof-test self-recording gages for the measurement of pressure-time and peak pressure in connection with air blast waves from nuclear explosions. To accomplish this purpose, prototypes were manufactured for three types of gages in quantities of 10 to 30. They were employed in numerous ways on several shots to determine their characteristics, limitations and capabilities. A nylon and carbon paper initiation device was used on the pressure-time gages to start the recording disc at a finite time after the detonation of the device. The pressure-time gages were accurate to plus or minus 10 percent and recorded wave shapes very similar to those obtained by more expensive electronic instrumentation. The peak pressure gages were accurate to plus or minus 10 percent and no initiation device was needed. It is concluded that gages of the type tested can give useful data, on tests requiring greater coverage and longer blast lines, with sufficient accuracy and for less expenditure in money, man- power, and time, than is possible with other types of instrumentation.
- Nuclear Instrumentation