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考虑空气阻力和地球自转的远程抛射体的研究

DOI: 10.6052/1000-0879-12-016, PP. 49-56

Keywords: 抛射体,科里奥利力,龙格-库塔法,空气阻力

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Abstract:

针对地球表面坐标系计算远程抛射体落地时间和位置的不足,通过两种方法获得远程抛射体的落地信息.首先通过在地球表面建立空间直角坐标系计算出考虑空气阻力和地球自转情况下任意抛射角的抛射体的解析解,然后获得了在地球表面所建立的空间直角坐标系与地心坐标系的转换关系式,以抛射体与地心的距离为地球半径作为落地点的条件来计算落地时间和落地位置.另外,采用球面坐标系表示抛射体的位置、速度及加速度,通过数值计算方法获得抛射体的落地信息.两种方法所得的结果比较接近,因此两种方法来获得远程抛射体的落地信息都是可行的.

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