progressivity

In order to study the progressivity of GIBR(gradual increasing burning rate) layered propellant with square flake shape,the physical model about the combustion process was put forward,and the shape function was calculated according to the physical model and the parallel layer burning law.

为了研究具有燃速渐增特性和分层结构的方片状发射药的燃烧特性,提出了该药的燃烧物理模型,以此模型建立了相应的形状函数,并对不同外层比例X1、燃速系数比K、药片厚度与宽度之比β条件下相对已燃质量Ψ、相对表面积σ随相对已燃厚度Z的变化进行计算和分析。

Japan turned to gradually augment armament.

日本由重整军备转向渐增军备。