摘要
描述了一种通过测量导弹在六个不同位置的转动惯量来计算导弹惯性积 ,进而计算导弹纵轴与主惯性轴夹角的方法。对长度较长、竖直放置在测试台上很困难的导弹 ,提出了将导弹纵轴倾斜一角度 ,间接计算纵向转动惯量的计算方法 ,使得在同一台设备上能测量导弹全部惯性张量。转动惯量通过扭摆法测量 ,在测量过程中 ,由于导弹转动速度很慢 ,可以忽略空气阻力的影响 ,有较高的测量精度。
This paper introduces a method of determining missile's product of inertia by a series of moment of inertia measurements with the missile oriented in six different positions in addition to calculating principal axis orientation. Because it is difficult for the missile mounted vertically to fix it ,a indirect calculating method of moment of inertia along missile's longitudinal axis is presented through mounting the missile with the angle of inclination . Moment of inertia is measured by oscillating the object in torsion pendulum. Since the missile rotates very slowly during this measurement, the windage forces exerted on the missile are negligible,thus this measurement is of higher precision.
出处
《上海航天》
2000年第2期40-42,,45,,共4页
Aerospace Shanghai
关键词
转动惯量
惯性积
动平衡
导弹
扭摆测试
Moment of inertia
Product of inertia
Dynamic balance
Measurement Method
Missile
Torsion pendulum
