Variable-pitch multi-rotor unmanned aerial vehicle with variable special-shaped structure

Abstract

The invention discloses a variable-pitch multi-rotor unmanned aerial vehicle with a variable special-shaped structure. The variable-pitch multi-rotor unmanned aerial vehicle comprises a rack, a power device arranged on the rack, a fuel tank, a lifting device and an adjusting device, wherein a speed reducer is arranged between the lifting force and the power device; an exhaust end of the power device is connected with an exhaust box; the exhaust box is provided with a flow guide device; the flow guide device comprises flow guide plates which are symmetrically arranged at two ends of the exhaust end, a flow guide plate push-pull rod and a flow guide plate control steering engine; two ends of the flow guide plate push-pull rod are hinged with the flow guide plates, and the flow guide plate push-pull rod is used for controlling the flow guide plates to deflect synchronously; and the flow guide plate control steering engine is arranged on the exhaust box and is used for driving the flow guide plate push-pull rod. The lifting device is hinged with the rack, and meanwhile, the adjusting device for adjusting the elevation angle is also arranged between the lifting device and the rack, so that the posture and the gravity center of the unmanned aerial vehicle are changed, and the stability and the high efficiency of the unmanned aerial vehicle under different flight environments and requirements are improved.

Description

technical field [0001] The present invention relates to the field of aircraft, in particular to the field of unmanned aerial vehicles, specifically, a variable-distance multi-rotor unmanned aerial vehicle with a variable structure. Background technique [0002] At present, multi-rotor UAVs are widely used in the fields of reconnaissance, photography, signal emission, and aircraft model research. affect the flight performance of the UAV. At present, the arm connection structure of multi-rotor small drones generally adopts a flat straight-lay structure. Due to the good stability and high structural strength of the flat straight-lay structure, the failure rate of the drone's body structure is relatively low; however, its fixed The structure of the UAV also brings the disadvantages of being non-adjustable and non-deformable, which limits the performance of the UAV in different environments and flight states to a certain extent; Maneuverability, the center of gravity of the UAV...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a variable-distance multi-rotor UAV with a variable structure, which is used to solve the problem of the inability or inconvenience of existing UAVs to change the UAV by adjusting the current positional relationship between the arm and the frame. Center of gravity to adapt to different flight requirements and enhance flight stability; at the same time, provide a UAV that simultaneously changes the pitch angle of the arm and the inclination angle of the rotor blades to meet the needs of UAVs in take-off and landing, level flight, high and low speed The problem of different lift forces required for various attitude transitions in flight

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