A ducted fan vector propulsion system

Abstract

The invention relates to a vectored thrust ducted propeller. The vectored thrust ducted propeller comprises a screw propeller and a duct cylinder body, wherein the screw propeller can rotate to generate air currents and the duct cylinder body surrounds the screw propeller; a first rotating piece, a second rotating piece and a blocking piece which are arranged in an air current deflection mechanism are respectively and directly derived from a part of a duct body; a complete duct is jointly formed by the first rotating piece, the second rotating piece, the blocking piece and the duct cylinder body part. Under the driving of a speed reducing motor, a rotation driving shaft is rotated, so that the first rotating piece and the second rotating piece are driven to rotate to expected positions; the blocking piece moves forward and backward along a sliding groove formed in the duct cylinder body to prevent the air currents from flowing out of the right side of the duct, and the blocking piece is matched with the first rotating piece and the second rotating piece so that the air currents can flow out of the remained empty part formed after the first rotating piece is rotated; therefore, the whole system bears lateral force which is reversed to the air currents. According to the vectored thrust ducted propeller disclosed by the invention, the thrust direction of a ducted fan is substantially changed, large enough lateral force is provided for an aircraft to balance the reaction torque of a main rotor, so that the residual thrust in the axial direction of the aircraft is as small as possible, and more suitable for the aircraft of the type to ascend and descend perpendicularly and hang in the air.

Description

technical field [0001] The invention relates to the technical field of aviation power, in particular to a ducted fan vector propulsion system. Background technique [0002] The traditional single-rotor helicopter with tail rotor is affected by the compression of the forward blade and the air separation of the rear blade, the maximum flight speed is greatly limited, and the maximum cruising speed is usually around 300km / h, while the fixed-wing The flight speed of the aircraft can be very high, but it needs the airport runway to take off and land, and cannot hover and fly at low speed. Therefore, for a long time, foreign countries have been unremittingly exploring new ideas of technological development, trying to create a new type of aircraft, which can not only maintain the advantages of vertical take-off and landing, hovering and economy of helicopters, but also achieve the flight speed of aircraft. In decades, many different forms of "vertical take-off and landing converti...

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the shortcomings of the ducted fan vector propulsion system in the prior art, such as heavy structure, complex driving mechanism, and large aerodynamic resistance of the airflow deflection mechanism when the aircraft flies at high speed, the present invention proposes a ducted fan vector propulsion system

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