Low noise cartridge receiver and control plane for duct type vertical take-off and landing air vehicle

Abstract

The invention discloses a low noise cartridge receiver and control plane for duct type vertical take-off and landing air vehicle. The cartridge receiver is divided into a lip ring, a cartridge receiver main body and a sawtooth bottom ring which are sequentially arrayed from top to bottom and are connected and fixed by virtue of long bolts and nuts through four screw holes; tail guiding control planes are mounted on the inner side of the sawtooth bottom ring, and triangular sawteeth are arranged on the tail edges of the tail guiding control planes; and the sawteeth at the tail of the sawtooth bottom ring are of a sine form, and the end surfaces the sawteeth are vertical to the cylindrical surface on the inner side of the cartridge receiver. After the cartridge receiver is processed, the cartridge receiver main body is capable of effectively absorbing noise produced by propellers; the structure of a speed shearing layer is influenced by the sawtooth bottom ring, so that the jet noise ofthe duct air vehicle can be effectively reduced; and by utilizing the sawtooth structures at the tail edges of the tail guiding control planes, the tail track region is broadened, the crushing of trailing vortex is accelerated, and the noise of turbulent flow behind the control planes is effectively lowered. Compared with a traditional multi-rotor duct air vehicle, the air vehicle utilizing the cartridge receiver and the control plane is relatively quiet during the flight, can be used for executing tasks with high concealing requirements and has wide application prospects.

Description

technical field [0001] The invention belongs to the field of unmanned aerial vehicles, and relates to a ducted aircraft low-noise casing and a rudder surface, in particular to a ducted vertical take-off and landing aircraft casing with a sawtooth trailing edge structure and casing treatment and a A tail rudder with a serrated trailing edge structure. Background technique [0002] The ducted vertical take-off and landing aircraft is a small unmanned aerial vehicle that wraps the propeller and the power unit inside the ducted casing with a certain thickness and shape in the cross section. The safety and stability of common multi-axis aircraft, but the noise problem generated during its work still needs to be further resolved. [0003] There are three sources of noise when the ducted vertical take-off and landing aircraft is working, namely the noise generated by the rotation of the propeller, the jet flow noise caused by the impact and shear of the wake exiting the bottom of ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the invention is: in order to make up for the deficiencies in the prior art, effectively reduce the jet noise and turbulence noise of the ducted vertical take-off and landing aircraft, so that it can complete some special tasks, the invention proposes a ducted aircraft with low Noise receiver and rudder surface

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