The tethered-net is one of the most promising flexible space debris cleaning technologies to be developed in recent years. Momentum and geometric analysis were used to select four characteristic parameters of the tethered-net ejection system—the radius of the circumcircle of the net, the ratio of the bullet mass to the net mass, the ejection velocity of the bullet, and the ejection angle—to establish a set of formulas that describe the kinematics of the net deployment. The net deployment performance evaluation criteria were obtained with a concise analytical form. The calculation results of this set of analytical formulas are in good agreement with the numerical simulation results of the mass-spring model. Furthermore, this set of analytical formulas reveals some intrinsic characteristics of the net deployment dynamics. For example, the flying distance of the net from the start of ejection to the largest area is mainly determined by the radius of the circumcircle of the net and ejection angle. It is believed that the analytic formulas proposed are suitable for the preliminary design of a tethered-net system, especially when numerical simulation is time consuming.

系留网是近年来最有前途的柔性空间碎片清理技术之一。通过动量和几何分析，选取了绳网弹射系统的四个特征参数——网的外接圆半径、子弹质量与净质量的比值、子弹的弹射速度和弹射角——建立一套描述网络部署运动学的公式。网络部署性能评估标准是通过简洁的分析形式获得的。这套解析公式的计算结果与质量-弹簧模型的数值模拟结果吻合较好。此外，这组分析公式揭示了网络部署动态的一些内在特征。例如，球网从开始弹射到最大区域的飞行距离主要由球网外接圆半径和弹射角度决定。相信所提出的解析公式适用于系留网络系统的初步设计，尤其是在数值模拟耗时的情况下。