无人机撞网回收末制导系统的研究

On Recovering RPV with Net System in China

介绍了无人机撞网回收导引系统的设计思想与实现措施，解决如何可靠安全撞网回收的问题。该系统采用某型无人机的气动参数和实际飞行数据，分析计算了无人机的数学模型，对无人机导引规律的横侧向和纵向分别进行了研究，给出导引结果。采用该系统的优点是不需要修改无人机的自身结构，不受场地的限制就可以平稳、安全、准确地撞网回收。

Parachute recovery of RPV (remotely piloted vehicle) is generally acknowledged to be less satisfactory than net recovery. Failing to find more than scanty technical information in the open literature, we had to design such a net recovery system ourselves. NPU (Northwestern Polytechnical University) built and successfully operated such a system in flight testing. The net recovery system we designed is shown schematically in Fig.1. After detection with ground automatic TV tracking system, two main functions of guidance computer, which are the control of locus of RPV and its lateral and longitudinal control, are performed respectively by two subsystems as shown in Figs.4 and 5. Of course, to go hand in hand with our design, we had to have a mathematical model. This model is given by Eqs.(7) and (13). As a numerical example, we took a certain Chinese RPV. On the basis of its aerodynamic and flight data, we made simulation calculations. The results, as given in Fig.6, show preliminarily that our design is feasible. Lauer flight testing does confirm that the net recovery system designed by us, and built and operated by NPU, is feasible. We look forward confidently to meeting the user′s requirements in service. It is important to emphasize that our net recovery system makes no demand on the RPV to be recovered.