The Investigation And Realization Of Part Of Key Technologies In Helicopter Blade Testing System

Helicopter blades are the kernel part of helicopter, which can provide uprising power and manipulating power for the flight of helicopter. They have tremendous effect on the maneuverability, manipulability, speed, oscillation, longevity, security and maintenance of helicopters. Blade running elevation measurement is one main specification of blade dynamic measurement, which directly affects the security and other important performance of helicopters and is an important examining item. The measuring of blade running elevation is carried out in the condition in which blades rotate at a very high speed. The measuring and watching control system presented in this paper introduces optics, electronics and computer technology, which is simple, fast and high precision. The main work included in this paper:First, this paper introduces the important function, the developing status of helicopter, exoatiates on the significance of the content we will study in this paper. And we present the measurement principle.According to the principle it can be concluded that in the whole design of blade running elevation measurement excellent light route is the premise of acquiring exact data. Consequently we introduce the design of light route and at the same time analyse the performance of optical system. Moveover, we also present the software and hardware realization of signal measuring.Following, this paper introduces software realization of upper computers. Main control computer adopts configuration software integration developing environment to watch and control the whole measurement process. Blade simulation computer is used to receive data from hypogynous machine and draw dynamic chart to simulate blade rotation. At last we give the realization ofnetwork data transmission.