新型推力可控垂直发射装置及其内弹道规律

为提高发射装置的通用性，提出了一种新型“类同心筒”弹射装置——推力可控垂直发射装置。通过零维内弹道计算和三维内弹道仿真两种方法，分析了低压室燃气出口面积对发射装置内弹道性能的影响；通过多项式拟合得到了低压室燃气出口面积与弹射最大加速度、出筒速度、出筒时间的关系式，并对拟合关系式进行了验证；研究结果表明：改变低压室燃气出口面积控制发射装置推力是可行的；导弹出筒时间、出筒速度、最大加速度随低压室燃气出口面积近似线性变化——低压室燃气出口面积减小，导弹最大加速度增大，出筒速度增大，出筒时间减小；拟合关系式的弹射最大加速度误差在8%以内，出筒速度与出筒时间误差在4%以内。

A New Type of Controllable Thrust Vertical Launcher and its Interior Ballistic Law

To improve the generality of launchers, this paper proposes a new type of ejection device, wihch is a controllable thrust vertical launcher similar to the concentric canister. Through the numerical calculation of zero-dimensional interior ballistics and simulation of three-dimensional interior ballistics, the influence of the gas outlet area of the low-pressure chamber on the internal ballistic performance of the launcher is analyzed. By means of polynomial fitting, the relationship between the gas outlet area of the low-pressure chamber and the maximum ejection acceleration, the ejection velocity, and the ejection time are obtained, and the fitted formulas are verified. The findings are as follows. It is feasible to change the gas outlet area of the low-pressure chamber to control the thrust of the launcher; the maximum ejection acceleration, ejection velocity, and ejection time change approximately linearly with the gas outlet area, so as the area of the gas outlet of the low-pressure chamber decreases, the maximum ejection acceleration increases, the ejection velocity increases, and the ejection time decreases; the error of maximum ejection acceleration obtained by the relational expression is within 8%, and the errors of the ejection velocity and the ejection time are both within 4%.