高压空气抛射角反射器过程内弹道研究

Interior ballistic process for high-pressure air of launching corner reflector

充气式角反射器是舰船重要的雷达干扰和诱饵器材,将其从舰船上快速抛出是应用中至关重要的一步。该文搭建了充气式角反射器高压空气抛射试验平台,测试了角反射器的抛射效果,并建立了气瓶中高压空气喷射过程与抛射筒内角反射器运动过程的联合数学模型。利用测试结果验证了模型的合理性,分析了各相关因素对抛射过程内弹道的影响。结果表明,在计算范围内,增大气瓶体积、填充压力和气瓶出口直径会缩短抛射时间,提高抛射出口速度;适当增加抛射筒的初始自由容积对抛射过程有利;摩擦系数和预紧力变化对内弹道影响不明显;角反射器质量增加会明显提高后坐力,但对抛射时间和出口速度影响较小。

The inflatable comer reflector is an important ship equipment for radar jamming and decoying,and its launching from the ship is the first step for usage. The experimental apparatus of the launching inflatable comer reflector is set up in this paper,the launching performance of the inflatable comer reflector is tested, and the combined models of the air flow from gas bottles and the interior ballistic process of the inflatable comer reflector are obtained. The suitability of the models are verified using the experimental data,and then the influences of several factors on the interior ballistic process characteristics are studied comprehensively. The results show that,with the increase of the volume,the pressure and the exit diameter of the gas bottles, the launch time is shortened; the proper increase of the initial free volume of the tube is benefit for launching ; the friction coefficient and the pretightening force have little effect on the interior ballistic process; the increase of the comer reflector mass significantly increases the recoil but has little effects on the launch time and the outlet velocity.