Tandem wing device and tandem wing aircraft

Abstract

The invention discloses a tandem wing device and a tandem wing aircraft. The tandem wing device comprises an annular motion device and a plurality of wings arranged on the annular motion device, the annular motion device can perform active annular circulating motion; and the plurality of wings can circularly move along with the annular movement device, so that the wings obtain lift force or simultaneously obtain lift force and thrust force. The aircraft with the tandem wing device is simple in structure, the multiple wings do not form a closed ring, interference between the wings is small, the lift-drag ratio is large, an annular duct with a large windward section is not arranged, flight resistance is small, the running speed of the aircraft and the circulating motion speed of the wings can be overlapped, and therefore large lift force is obtained during low-speed flight.

Description

technical field [0001] The invention relates to aircraft, more specifically to a tandem wing device and a tandem wing aircraft. Background technique [0002] Fixed-wing aircraft, helicopters, and multi-rotor aircraft are common aircraft. The lift-to-drag ratio of fixed-wing aircraft wings is large, but generally there are only one or two main wings, and the lift area is small, so it is difficult to provide large lift at low speeds and cannot take off and land vertically; Provided, the propulsion power of the propeller is lost, and the energy utilization efficiency is low. Helicopters and multi-rotor aircraft can take off and land vertically, but the lift-to-drag ratio is small, and the energy utilization efficiency is low. [0003] The Chinese invention patent with the notification number CN201710222033.4 discloses a new type of electromagnetically driven tandem wing aircraft. This aircraft includes a plurality of tandem wings in a large duct. These tandem wings form a clo...

AI Technical Summary

Problems solved by technology

Although this type of aircraft can also take off and land vertically, its magnetic levitation structure is complex, requiring high manufacturing requirements and high cost; according to the Carmen-Gabriel transport efficiency diagram, it can be seen that the lift-to-drag ratio of existing helicopters is about 4, and the electromagnetic drive series The multiple wings of the wing aircraft form a closed ring, and the interference between the wings is large, resulting in a decrease in lift and an increase in drag. The lift-to-drag ratio is less than 4, and the energy consumption is high; Proportional to the square of the speed, the flight speed of this tandem wing aircraft and the cycle speed of the wings cannot be superimposed, and the lift cannot be further increased

The tandem wing device cannot provide thrust when the new electromagnetic-driven tandem wing aircraft is running, and other propellers are needed. The propeller not only increases the windward area of ​​the aircraft, but also increases resistance, and also has power loss, which reduces energy utilization.

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