Accounting of the temperature effect when measuring the instantaneous values of the gunpowder gases pressure in the bores of firearms

Abstract

The relevance of measuring of the pressure of gunpowder gases in the barrel channels of a firearm is noted. The main requirements for a pressure sensor for intra-ballistic measurements are considered. A review of the works in the field of strain gauges error modelling is given. The analysis of the static characteristic of the strain gauge sensor of instantaneous pressure values is carried out. For typical combinations of sensor parameters, a quantitative estimation of the temperature error is performed. To reduce the effect of temperature on the measurement results, it is suggested to take into account the correction in the measurement results, or to apply the temperature stabilization system.

Keywords

• intraballistic process, strain gage sensor, instantaneous pressure value, static characteristic, firearms barrel channel, temperature error, measurement information, correction, temperature stabilization system