METHOD OF CALIBRATING ACCELERATION SENSING ELEMENTS WORKING IN PULSED CONDITION,
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
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According to the proposed method, the acceleration sensing element is placed in the shock tube in a slip ring piston and by the magnitude of its displacement from the effect of gas dynamic pulsed load is determined the sensitivity of the sensing element. The device is made in the form of a tube consisting of a high pressure chamber, and a low pressure chamber, separated by a diaphragm. In the low pressure chamber the piston is placed with the acceleration sensing element. Upon attainment of a given pressure in the high pressure chamber, the diaphragm breaks and the shock wave, as it propagates over the low pressure chamber, activates the piston. The displacement magnitude of the piston is recorded by a photoelectric or an inductive sensing element connected into the circuit of the recording instrument.