摘要
针对高空远程弹箭,研究了地球为椭球体时的重力偏心.在已有弹道模型的基础上,全面考虑了重力偏心、重力加速度随高度与纬度的变化、地表曲率、柯氏惯性力、雷诺数随高度的变化等"小量"对弹道的影响,建立了适合高空远程弹箭的精确弹道数学模型,并与低空条件下不考虑以上因素的情况进行了对比分析.结果表明,考虑了重力偏心等因素的影响后计算射程与不考虑的情况下差别较明显,以往忽略或简化的"小量"在高空远程条件下对弹道产生的影响不容忽视.
Aiming at long-range missile, eccentricity of acceleration of gravity was studied considering the globe as ellipsoid. A new precise ballistic model for long-range missile was built. Based on the existing model trajectory, some factors which were ignored under low altitude were considered, such as eccentricity of acceleration of gravity, curvature of the earth＇s surface, the variety of acceleration of gravity along with height and latitude, the variety of Renault number along with height, etc. The result was compared with that under the conditions of low altitude and ignoring these factors. The contrastive result shows that the precise exterior ballistic model is more suitable for the ballistic calculation of long-range missile versus high altitude. The factors such as eccentricity of acceleration of gravity affect the range obviously and should not be ignored in the calculation of long-range missile.
出处
《弹道学报》
CSCD
北大核心
2008年第4期8-11,共4页
Journal of Ballistics
关键词
高空弹道
远程弹箭
重力偏心
精确模型
high-altitude trajectory
long-range missile
eccentricity of acceleration of gravity
precise model
