Internal Ballistics Of Spring Piston Airguns

Transcript

This work describes a comprehensive model of a spring piston airgun internal dynamics, where energy and momentum balance in the compression chamber and barrel are coupled with a finite element analysis of the spring. The problem is cast as a set of coupled non-linear ordinary differential equations, which are solved numerically. The model is applied under adiabatic conditions to a specific 4.5 mm caliber air gun, giving excellent agreement between measured and predicted performance.