Flight-mode-variable unmanned aircraft with multiple sets of coaxial rotors

Abstract

The invention relates to a flight-mode-variable unmanned aircraft with multiple sets of coaxial rotors. The structure of the unmanned aircraft is that the airframe is a framework structure which is provided with multiple sets of the coaxial rotors, wherein each set of the coaxial rotors consist of an upper motor and a lower motor which are arranged back to back with the same axis and are connected with an upper rotor and a lower rotor respectively, the rotation directions of the upper rotor and the lower rotor are opposite to each other, blades of the rotors are symmetrical with each other positively and negatively and are arranged coaxially with lift force, the torsional moment of each set of the coaxial rotor is balanced automatically, and an on-board avionics flight control box is arranged at the gravity center of the airframe. The unmanned aircraft overcomes the defects that the prior device has a complex structure, poor stability, complicated use and operation, and high cost no matter for manufacturing or use. The flight-mode-variable unmanned aircraft has good maneuverability and stability, is easy to control the flight mode switch and the relative flight speed, and solves the problems of transportation and use. The flight-mode-variable unmanned aircraft has the advantages of simple structure, low manufacturing and using cost, and easy operation.

Description

technical field [0001] The invention relates to an aircraft, in particular to an unmanned aerial vehicle with multiple sets of coaxial rotors with variable flight modes, which can be applied to scientific research, aviation, industry, entertainment, civil, police, military and other fields. Background technique [0002] Unmanned helicopters have obvious advantages, such as small take-off and landing sites, vertical take-off and landing, hovering in the air, and flexible flight in any direction. Because of its unique structure and functional characteristics, it not only plays an important role in the military field, but also shows great application potential in disaster scene rescue, dangerous environment detection, traffic surveillance or aerial photography, and has been widely valued. [0003] Before the present invention, among the existing unmanned helicopters, miniature unmanned helicopters (usually referring to below 1kg) have almost no load capacity, and the structural...

AI Technical Summary

Problems solved by technology

Although the unmanned tilt-rotor aircraft can be converted to aircraft flight mode, it can only be tilted by the rotor nacelle, and the structure is very complicated

These unmanned helicopters are not only relatively complex in structure, but also poor in stability, and complicated to use and operate. Whether it is manufactured or used, the cost is very high

Therefore, for most non-military applications, it is of little practical significance

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