Multi-rotor unmanned helicopter

Abstract

The invention relates to a multi-rotor unmanned helicopter. The multi-rotor unmanned helicopter comprises a fuselage, main rotors, and assistant rotor systems, wherein the fuselage is provided with a flight control system for controlling the operation of the helicopter; an electricity supply system is also mounted in the fuselage and comprises engines, a generator and a battery unit, wherein the engines drive the generator; the generator provides electric energy for the battery unit; the main rotors are used for providing lifting force for the helicopter, and are vertically arranged at the top of the fuselage, the engines provide power for driving the main rotors; the assistant rotor systems are used for changing the flight attitude of the helicopter, are fixed on the periphery side of the fuselage and are electrically connected with the battery unit; the battery unit provides electric energy for the assistant rotor systems. The multi-rotor unmanned helicopter disclosed by the invention has the beneficial effects that the loads are large, the endurance is long, the unmanned helicopter can also land perpendicularly when assistant rotors are failed without depending on an electronic control system too much, and the unmanned helicopter has the characteristic of being high in reliability and the like.

Description

technical field [0001] The invention belongs to the field of unmanned helicopters, in particular to a multi-rotor unmanned helicopter. Background technique [0002] Most of the existing unmanned helicopters provide lift and attitude control for the battery-driven rotors. Due to the limitation of battery capacity, the load capacity and endurance are very limited. Generally, when the battery is added, the maximum load is about 20 kg, and the endurance time is about 10 minutes. , and due to the battery, frequent flights need to carry a large number of battery packs, and the charging time of the battery pack is too long. Therefore, the technical indicators of battery-driven UAVs seriously limit its practical promotion. Another type of helicopter is a helicopter with a single oil-driven conventional layout. The flight attitude is controlled by changing the pitch of the main rotor. However, its response is poor, the control accuracy is not high, the reliability is poor, the struc...

AI Technical Summary

Problems solved by technology

[0002] Most of the existing unmanned helicopters provide lift and attitude control for the battery-driven rotors. Due to the limitation of battery capacity, the load capacity and endurance are very limited. Generally, when the battery is added, the maximum load is about 20 kg, and the endurance time is about 10 minutes. , and due to the battery, frequent flights need to carry a large number of battery packs, and the charging time of the battery pack is too long

Therefore, the technical indicators of battery-driven UAVs seriously limit its practical application.

Another type of helicopter is a helicopter with a single oil-driven conventional layout. The flight attitude is controlled by changing the pitch of the main rotor. However, its response is poor, the control accuracy is not high, the reliability is poor, the structure is complex, the failure rate is high, and it relies too much on electronic control. , the failure of electronic devices is very easy to crash

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