TW-1拖靶缆绳张力与形状参数的计算

本文通过拖靶平衡受力分析,得到拖靶放出后,稳定飞行时平衡攻角的近似计算公式。并通过缆绳微元受力分析,求得缆绳张力与飞行速度、高度及缆绳长度关系的计算公式及给出缆绳形状参数的计算公式。运用本文提供的公式计算出的MK3靶的缆绳张力曲线与实际测量之张力曲线吻合较好。因此,运用本文提供的公式进行了TW-1拖靶缆绳的设计及计算,取得了可信的依据,完全满足工作设计要求。

Calculation of the Tension and Shape Parameter for TW-1 Target Towlines

This paper presents the derivation of the approximate equation which is used for the calculation of balanced attack angle of a target in stable flight, by the analysis of the equilibrum of forces acting on the towed target, and the derivation of the equations which are used for the calculation of the tension and shape parameters of the towline, by the analysis of the equilibrium of forces acting on a small curved element of the towline. The tension is related to the flight velocity, the flight altitude and the length of the towline. Calculation results of the tension by these equations agree well with the experimental results for MK3 target towline. The towline parametric design and calculation conducted by these equations are reliable, fully satisfying the requirement of the engineering design of the TW-1 target.