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针对绳系子星近距离快速释放问题,研究了短系绳释放过程的动力学特性,分析了适当的释放方式。考虑子星姿态,建立了绳系卫星系统运动学与动力学模型,探索了适合于近距离系绳释放的方式。提出以一定初始速度释放子星,并通过减速释放保证系绳张紧的释放方法。通过数学仿真,分析了释放过程中系绳与子星姿态的运动特性。表明这种方法能够实现绳系子星任意方向的释放,满足快速释放的要求。减速释放过程中系绳轨道面内角度以轨道角速度发生偏移,子星姿态小幅振动,系绳保持张紧。这些动力学特性为以后近距离绳系卫星的释放与的控制提供了重要依据。
Aiming at the rapid close-range release of tethered cotyledons, the dynamic characteristics of short-tether release process were studied and the proper way of release was analyzed. Considering the attitude of sub-stars, the kinematics and dynamics model of the tethered satellite system was established, and the suitable mode for releasing the tether at short distance was explored. It is proposed to release the satellite at a certain initial velocity and to release the tension of the tether through deceleration. Through the mathematical simulation, the kinematic characteristics of the tether and sub-star attitude during the release process are analyzed. This method shows that this method can realize the release of tether in any direction and satisfy the requirement of rapid release. During deceleration, the angle of the tether orbit surface is offset by the orbital angular velocity, the satellite attitude slightly vibrates and the tether remains tensioned. These dynamic characteristics provide an important basis for the release and control of near-field tethered satellites.