Theoretical Accuracy of Acoustic Gas Temperature Measurements in Guns
Abstract
The ejection of a projectile from a gun is followed by a flow of high pressure gases through the muzzle of the weapon. The temperature in the gas immediately after the projectile has cleared the muzzle can be measured by a recently developed 'acoustic temperature measurement technique'. This report is a theoretical analysis of the accuracy of the new measurement technique. It is estimated that the standard errors of the temperature observations are typically about 15%. It is also shown that the technique measures an average temperature for the first few milliseconds, instead of measuring the instantaneous initial temperature. Consequently, by this technique one cannot detect temperature excursions of less than one millisecond duration, such as predicted by one- dimensional interior ballistics theories.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1979
- Accession Number
- ADA068461
Entities
People
- Aivars Celmins
Organizations
- Ballistic Research Laboratory