Multi-rotor parallel hybrid power unmanned plane

Abstract

The invention relates to a multi-rotor parallel hybrid power unmanned plane. The multi-rotor parallel hybrid power unmanned plane comprises a petrol engine, a starting motor, a starting speed-reducinggear train, a generator, a transmission mechanism, a rectifier, a voltage stabilizing circuit, a lithium battery, a coaxial main rotor, an auxiliary rotor, a control module, a foldable support and various mechanical connection structural parts. the petrol engine on an integrated structure drives a pair of coaxial double propellers to rotate through a helical gear train for providing active forcefor a system, so that elevating motion and hovering of the unmanned plane can be guaranteed, and four small motors are peripherally and symmetrically arranged to drive four small rotors, The power ofthe four small rotors realizes rolling motion, luffing motion and yaw motion of the unmanned plane. During working, the terminal voltage of a battery is detected, when the terminal voltage is lower than a certain threshold, a generator circuit is closed, the petrol engine drives the generator for generating, and the lithium battery is cooperated for assisting the motor for supplying powder. The unmanned plane fully combines the advantages of large loading capacity and long endurance of the petrol engine, easy control of four rotors and strong stability. The loading capacity and endurance timeof the current unmanned planes can be greatly increased.

Description

[0001] The invention relates to a parallel unmanned aerial vehicle powered by gasoline and batteries. Background technique [0002] Due to the strong stability and simple operation of electric multi-rotor UAVs, almost all multi-rotor UAVs currently on the market fly on batteries. The disadvantages of rotary-wing UAVs in terms of load and endurance have become more and more prominent. The advantage of gasoline in energy density makes UAVs using gasoline engines have incomparable advantages in terms of load and endurance time compared to electric multi-rotors. However, its complex mechanism and operational safety limit its development. In order to give full play to the advantages of electric multi-rotor drones and oil-powered drones, Top Flight, a company established by researchers from Draper Lab and MIT, has developed a six-rotor hybrid drone. This kind of hybrid drone is a series drone, and the engine directly drives the generator to charge the battery. At present, this kin...

AI Technical Summary

Problems solved by technology

However, the disadvantages of this series oil-electric hybrid UAV are:

[0003] 1. The energy generated by the gasoline engine undergoes an energy conversion to generate electricity, which reduces the efficiency of energy use;

[0004] 2 This kind of UAV needs to be equipped with a high-power generator in the case of a large load, but the weight of the current high-power generator is relatively heavy, and the rectification and voltage stabilization module is relatively heavy

which limits the improvement of its load quality

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