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Bird impact design method for fan blade

A design method and technology of fan blades, applied in the field of aviation, can solve the problems of unpredictability, easy breakage of fan blades, etc., and achieve the effect of increasing safety and improving work safety

Active Publication Date: 2017-08-18
SHENZHEN YIDONG AVIATION TECH CO LTD
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Problems solved by technology

[0004] The purpose of the present invention is to propose a bird strike design method for fan blades, which can solve the technical problems in the prior art that the fan blades are easily broken by impact and the fracture position cannot be predicted

Method used

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  • Bird impact design method for fan blade
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Embodiment Construction

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0023] The invention provides a bird strike design method for fan blades, such as figure 1 and figure 2 As shown, by designing the sub-surface fine mesh structure of the blade, the elastic deformation of the fan blade is controlled when a bird strikes or a foreign object collides, and the energy absorbed by the internal structure dislocation and rupture is achieved, and the large deformation of the blade is achieved to the greatest extent without Fracture: Even if the blade is broken, the position and direction of the fracture can be controlled through this design method, so that the risk is controllable and the safety of the fan blade is maximized. The internal design can realize the e...

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Abstract

The invention relates to a bird impact design method for a fan blade, belongs to the technical field of aviation and provides a bird impact design method for a fan blade. The sub-surface fine net structural design is conducted on the blade, elastic deformation of the fan blade due to bird impacts or foreign matter collisions is controlled, the effects of inner structure dislocation energy absorbing and breaking energy absorbing are achieved, and the purpose that the blade is greatly deformed but not fractured is achieved to the maximum degree. Even though the blade is fractured, the fracture position and trend can be controlled through the design method, risk controllability is achieved, and the safety of the fan blade is improved to the maximum degree. Through the inner design, effective control and prediction over blade fracture during bird impacts can be achieved, and the work safety of an aero-engine is improved.

Description

technical field [0001] The invention relates to the field of aviation technology, in particular to a bird strike design method for fan blades. Background technique [0002] Existing aero-engine fan blades are easy to break if they are struck by birds or foreign objects during work. The fracture position of the fan blade cannot be predicted and controlled, and the broken fragments contain huge kinetic energy, which poses a great safety hazard, which is extremely unfavorable to the flight of the aircraft. of. [0003] Therefore, how to provide a bird strike design method for fan blades can solve the technical problem that the fan blades in the prior art are easy to break due to impact and the fracture position cannot be predicted, which is a technical problem that those skilled in the art need to solve. Contents of the invention [0004] The purpose of the present invention is to propose a bird strike design method for fan blades, which can solve the technical problems in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/26G06F17/50
CPCF04D29/26F05D2220/36F05D2240/30F05D2250/60G06F30/17
Inventor 韩品连张坤朱光智
Owner SHENZHEN YIDONG AVIATION TECH CO LTD
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