气动系数插值在捕获轨迹试验中的应用

THE APPLICATION OF AERODYNAMIC COEFFICIENT EXTRAPOLATION IN CAPTIVE TRAJECTORY

本文叙述气动系数插值在捕获轨迹试验中的交叉核对和轨迹计算中的应用。对外挂物在某一个新的位置上的某些量的误差进行核对,看其是否在允许的范围之内,称为“交叉核对”。交叉核对分为两种,一种是对位置本身的核对,另一种是对气动系数的核对。在轨迹计算的每一个步长中应用气动系数插值,可以使计算更加精细,轨迹更加光滑。本文对气动系数插值作了一些改进的尝试,提出将气动系数对时间的插值改为气动系数对线位移的插值,这仅是初步的尝试,有待进一步探索。

The application of aerodynamic coefficient extrapolationis described in this paper on cross checking and trajectory calculationof captive trajectory testing.In a new place,the error of some quanti-ty of store is checked so as to know whether it is within theallowable limit,called“cross checking”.The cross checking is falled intotwo categories,one is checked on place itself,the other is checked onaerodynamic coefficient.In every step of trajectory calculation,theapplication of aerodynamic coefficient extrapolation can make the cal-culation and trajectory more accurately and smoothly.The improve-ment on aerodynamic coefficient extrapolation attempted in this paperpoints out the aerodynamic coefficient extrapolation with respect toline displacement instead of to time which has been only a preliminaryattempt and will be investigated further.