本文介绍导气式自动武器在火药气体作用时期内活塞运动诸元的数值解法,据气体动力学原理建立的理论公式,必须采用数值解法才能求解。数值解法中用龙格一库塔法比差分解法更为简便,精度也较高。并编制了一个计算活塞运动诸元?导气装置结构诸元的通用程序,利用它对四种不同的导气式武器进行了计算,结果与实际比较符合。 This paper introduces the numerical solution of airfoil automatic weapons during the period of gunpowder gas action. The theoretical formula established according to the principle of gas dynamics must be solved by numerical solution. In the numerical solution, the Runge-Kutta method is more convenient and the accuracy is higher. And a general procedure for calculating the components of the piston movement and the air conduction device was compiled. Four different types of gas-conducting weapons were calculated and the results were in good agreement with the actual ones.