电动飞行器外文翻译.doc

The Design Of The Lade Blade structure design of the main work is according to the overall design and aerodynamic design and the parameters of the helicopter, helicopter is designed to meet tactical technical requirements and overall technical requirements of blade structure. Blade structure design to meet the blade aerodynamic shape, rotor dynamics, fatigue and strength, reliability and maintainability, manufacturability and economy requirements, etc. Blade structure design of main work include: (1) The blade material design, select material determine blade materials system and variety. (2) The blade configuration design, determine the structure of the blade profile typical forms, joint form and main structure size. (3) Blade layer design and structure parameters are calculated. (4) The blade structure detail design. Blade of the main girder, skin structure, after a period of parts and connectors. In addition, there is blade tip cover, rear adjustment piece, front bag piece, balance weight, etc. Blade configurations by early wood blade, blade hybrid structure, the metal blade, metal and composite materials mixed blade structure and development of the whole composite blade, to date, most advanced helicopter blades with composite materials. Blade configuration is mainly according to the shape of the blade material and supporting as well as the joint form to differentiate, blade configuration design, want to consider domestic blade development and industry technical accumulation, the basis of reasonable selection of blade configurations. The metal blade configurations Metal blades are usually made of girder, joint, in the back cover and the blade tip, trailing edge adjustment piece, front bag piece, such as balance weight zero components. According to the shape of the girder and the forming process is different, can be divided into the hollow extruded beam blade, C shape extruded beam blade, illustrated the paddle blade and a closed cavity composite beams.