Study On The Charge Structure And Firing Characteristics Of Cased Telescoped Ammunition

The CTA gun is a kind of gun using the new launch principle. Based on the ignition experiments, this thesis studies the charge structure and firing characteristic of CTA gun. The main points are as follows:By consulting the relative literatures about the CTA gun, I have understood the related fields of knowledge. According to the characteristics of CTA gun's ballistics process and special construction, the charge structure is designed, and based on it, the ignition experiments are performed respectively with different charge structures.Based on the experiments, combined with the classical interior ballistic theory and the modern interior ballistic theory, a mathematical model composed of igniter squid zero dimension model and one dimension two-phase flow interior ballistic model is established and simulated by using the two-phase flow method and computational fluid dynamics, and is confirmed with MATLAB software, the variation law of pressure and velocity is shown. The influences of different parameters on the interior ballistic performance are analyzed, which provide important theoretical guidance for revising and optimizing the CTA gun charge structure.Result shows that, the CTA gun charge structure can satisfy demands of muzzle velocity, chamber pressure and the strength of control tube. The experiment results are consistent with theoretic results.