无控火箭的老大难问题是散布大，射击精度差。
It has been a big and difficult problem that the uncontrolled rocket has large dispersion and low firing accuracy.
无控火箭武器存在的一个主要问题是落点散布大，精度低。
The key problems of rocket weapons are low precision and broad falling point.
本文在理论计算分析和试验研究的基础上提出了提高无控火箭密集度的一个途径，即阶梯推力方案。
On the basis of theoretical calculation analysis and experiment research, the paper proposes a new raising non-con-control rocket distrubution way. which is a step propulsion plan.
火箭是无控-飞行、旋转-和-翼稳定火箭，而且没有制导系统。
The rockets are free-flight, spin-and-fin stabilized rockets, and do not have guidance systems.
根据滚转火箭弹的动力学方程，给出了在弹体坐标系下无控低速滚转火箭弹在被动飞行段的锥形运动方程组。
The nonlinear coning motion equations in body coordinates on the force moment coefficients of low speed spinning rocket were obtained based on the dynamics equations.
由无控固体探空火箭和地面发射设备组成的运载系统是固体火箭探空系统的一个组成部分。
The carrier system that consists of an unguided solid sounding rocket and a set of launching facilities is a part of solid rocket sounding system.
由无控固体探空火箭和地面发射设备组成的运载系统是固体火箭探空系统的一个组成部分。
The carrier system that consists of an unguided solid sounding rocket and a set of launching facilities is a part of solid rocket sounding system.
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