Structure design method of rotor wing paddle

Abstract

The invention discloses a structure design method of a rotor wing paddle. The structure design method comprises the following steps: firstly, selecting a suitable lattice unit and a suitable engineering metal material; after selecting the lattice unit through a lattice unit mechanical analysis model, carrying out optimized design on the quantity of the lattice units in the paddle, geometric dimension of the lattice units and the distribution of the lattice units; after obtaining a lattice structure scheme meeting design requirements, directly preparing the paddle in an additive manufacturing manner. According to the structure design method disclosed by the invention, the design cost is reduced, the design period of the paddle is shortened, the complexity degree of manufacturing a paddle structure is extremely reduced, and a paddle manufacturing technology and flow are simplified; the production and manufacturing cost of the paddle is extremely reduced, the production and manufacturingefficiency of the paddle is improved, the strength can be increased, and the cost is reduced;; meanwhile, the strength and rigidity requirements of the structure can be ensured at the same time underthe condition that the weight of the material is the lightest; the recycling and utilization rate is high, the production cost is reduced, and industrial materials are saved.

Description

technical field [0001] The present invention relates to the technical field of rotor blades, in particular to a structural design method of rotor blades. Background technique [0002] At present, the common multi-rotor UAV rotor blade has a complex structure, which includes many structural components: iron cladding, skin, "C or D" beams, leading edge counterweights, pads and trailing edge strips, etc. First of all, in the design stage, there are many complex factors that interact with each other, resulting in a long design cycle and a complicated design process. Secondly, such a blade with a complex structure has high requirements on the quality of the manufacturing process, and the manufacturing process is relatively difficult. The complicated rotor manufacturing process greatly restricts the design of the rotor blade, and the cost of the blade is high. Finally, such blade characteristics are often due to manufacturing errors that make the static distance of each blade rel...

AI Technical Summary

Problems solved by technology

First of all, in the design stage, there are many complex factors that interact with each other, resulting in a long design cycle and a complicated design process.

Secondly, this kind of blade with complex structure has high requirements on the quality of the manufacturing process, and the manufacturing process is difficult. The complicated manufacturing process of the rotor greatly restricts the design of the rotor blade, and the cost of the blade is high.

Finally, such blade characteristics are often due to manufacturing errors that make the static distance of each blade relative to the center mass of the rotor unequal, and the centrifugal force generated by the rotation of the blades is not equal, and will also cause the aerodynamic performance of each blade, installation angle are not equal, therefore, there is an urgent need for a rotor blade manufacturing process

Images