无人机回收气囊缓冲特性研究  

Study on Cushioning Characteristics of Air Bag for RPV Recovery

作　　者：戈嗣诚[1] 施允涛[1] 

机构地区：[1]南京航空航天大学无人机研究所,南京210016

出　　处：《南京航空航天大学学报》1999年第4期458-463,共6页Journal of Nanjing University of Aeronautics & Astronautics

摘　　要：用缓冲气囊的缓冲特性对无人机伞降气囊回收方式进行了研究，并以单个气囊为对象，分析了影响缓冲性能的主要因素，认为质量体积比ｍ ／ｖｉ 和排气口面积 Ａｎ 是决定缓冲效果的主要因素。在理论分析的基础上给出了质量体积比ｍ ／ｖｉ 的最优值，同时建立了排气口分析模型，推导出计算排气口面积的公式，实践证明其结果是正确的，对工程应用具有特别重要的意义。Research on the cushioning characteristic of air bag for the parachute air bag recovery system for the remotely piloted vehicle (RPV) is made. It finds out that the air bags can be used to absorb landing shocks at normal parachute sinking speeds with deceleration acceptable for RPVs. This paper analyzes the main factors affecting the deceleration characteristic such as bag shape,initial pressure,initial bag height, mass to volume ratio (m/v i) and the area of the flow nozzle (A n) by using a one air bag system,and it is concludes that mass to volume ratio (m/v i) and the area of the flow nozzle (A n) are the main factors. From the standpoints of maximum deceleration and required stroke,the vertical cylinder appears to be the best shape studied. The optimal value of m/v i is given and the flow nozzle analysis model is used to derive the formula of the area of the flow nozzle.The conclusions are proved to be true and practical in engineering use.

关 键 词：无人驾驶飞机 回收 气囊 缓冲特性 排气口 

分 类 号：V279[航空宇航科学与技术—飞行器设计]