Fan blade and aero-engine

Abstract

The invention discloses a fan blade. The fan blade comprises a first face plate, a second face plate, a plurality of partition plates and a plurality of fillers, wherein the first face plate is arranged on the windward side; the second face plate corresponds to the first face plate and is arranged on the leeward side; the partition plates are supported between the first face plate and the second face plate at intervals and can divide the interior of the fan blade into a plurality of cavities; and the plurality of fillers fill the cavity and are fixed relative to the positions of the first face plate and the second face plate. Based on the technical scheme, the fillers can be used for absorbing the bird impact load of the fan blade, so that the bird impact resistance of the fan blade can be improved; the fan blade has higher hollow ratio and smaller weight under the conditions of equivalent strength, rigidity and bird impact resistance; and meanwhile, the processing and manufacturing efficiency of the fan blade is high, and the quality is stable.

Description

technical field [0001] The present disclosure relates to the field of gas turbines, in particular to a fan blade and an aeroengine. Background technique [0002] High bypass ratio fan blades are key components of large airliner engines. Traditional solid fan blades have heavy weight, high centrifugal force, prominent flutter and vibration problems, and can no longer meet the requirements of passenger engine design and low fuel consumption. Superplastic forming / diffusion connection Valen structure titanium alloy wide-chord hollow fan blades and carbon fiber Composite material fan blades are a typical structure of the current international high bypass ratio turbofan engine, but they are all protected by the patents of foreign aero-engine manufacturers. [0003] At the same time, a large number of patents have proposed 3D printing technology related to aero-engines. According to the public patent search, 3D printing technology has been widely used in many parts of the engine, ...

AI Technical Summary

Problems solved by technology

The invention mentions the use of 3D printing technology to manufacture hollow blades to obtain more complex blade structures, but it is difficult to achieve in practice, because although 3D printing can manufacture complex three-dimensional structures, it cannot form suspended structures, nor That is to say, the spherical network structure cannot form an entire sphere from a suspended point, and then cross-link with other spheres. Therefore, although this patent provides the idea of ​​using 3D printing in blade manufacturing, it is actually not feasible in principle.

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