Novel efficient tilt rotor unmanned aerial vehicle

Abstract

The invention discloses a novel efficient tilt rotor unmanned aerial vehicle. Unmanned aerial vehicle layout has higher aerodynamic efficiency and better level-flight longitudinal direction and coursecontrol performance, and high-speed and high-efficiency flight can be achieved on the premise of vertical take-off and landing. The unmanned aerial vehicle comprises tilt rotors, vertical flight mechanisms, fixed wings, a fixed vertical fin, a stabilator, a body structure and a landing gear. The unmanned aerial vehicle needs to experience a vertical flight state, a transition flight state and a level flight state from take-off to level flight. The tilt rotors and the vertical flight mechanisms can rotate through an actuation mechanism, so that the unmanned aerial vehicle can vertically take off and horizontally fly at high speed, the tilt rotors can change a distance, take account of rotating efficiency in the vertical flight state and the level flight state and drive the unmanned aerialvehicle to fly at high speed, the vertical flight mechanisms and the tilt rotors collectively provide lift force and control force of vertical take-off and landing in the vertical flight state, the vertical flight mechanisms are stored on two sides of a body in the level flight state, and a good aerodynamic shape of the unmanned aerial vehicle is kept.

Description

technical field [0001] The invention relates to a tilt rotor vertical take-off and landing aircraft, which belongs to the technical field of aviation products. Background technique [0002] The tilt-rotor unmanned aerial vehicle has both the vertical take-off and landing capability of the helicopter and the high-speed flight performance of the propeller fixed-wing aircraft, and belongs to the vertical take-off and landing aircraft. The direction of the dynamic force of the tilt-rotor unmanned aerial vehicle can be tilted, and it has a wide range of application prospects. The main applications include logistics, line inspection, forest fire prevention, and environmental monitoring. Although the tilt-rotor unmanned aerial vehicle can meet the application requirements of some special scenarios, there are still problems such as low vertical rotor efficiency, poor control performance and low aerodynamic efficiency in practical applications. For example: 1. The existing tilt-roto...

AI Technical Summary

Problems solved by technology

Although the tilt-rotor unmanned aerial vehicle can meet the application requirements of some special scenarios, there are still problems such as low efficiency of the vertical flying rotor, poor control performance and low aerodynamic efficiency in practical applications.

For example: 1. The existing tilt-rotor UAVs use the same power system for vertical flight and level flight, and most of them are fixed-pitch propellers. There are significant differences in both, which are determined by the different aerodynamic conditions of the propellers in different flight states. Therefore, the power system of the existing tilt-rotor unmanned aerial vehicle is difficult to be efficiently compatible with the vertical and horizontal flight states at the same time, and the horizontal flight speed is low. Poor control performance; 2. The existing tilt-rotor unmanned aerial vehicle schemes mostly adopt multi-rotor vertical take-off and landing, and the vertical take-off and landing function is realized by adding multiple sets of rotors, but these rotors can only provide less during level flight. power, and the complex tilting mechanism reduces the aerodynamic efficiency of the aircraft in level flight and increases the aerodynamic drag

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