Multi-shaft multi-direction tilting type multi-rotor aircraft transmission system

Abstract

The invention discloses a multi-shaft multi-direction tilting type multi-rotor aircraft transmission system. The transmission system comprises an engine (1), a first transfer case (2), a second transfer case (3), a third transfer case (4), a rotor wing tilting device (5) and a transmission shaft tilting device (6). Four first transmission shaft arms (10) are symmetrically arranged on the first transfer case (2) in a crossed manner, the first transmission shafts (11) are arranged in the four first transmission shaft arms (10) respectively, and an output shaft of the engine (1) drives the four first transmission shafts (11) to rotate through the gears of the first transfer case (2). The second transfer case (3) is arranged at the output end of each first transmission shaft arm (10), two second transmission shaft arms (20) are symmetrically arranged on the second transfer case (3), and the second transmission shafts (21) are arranged in the two second transmission shaft arms (20) respectively. The vertical take-off and landing of the rotorcraft can be achieved, and the advantages of flexibility, maneuverability, stability and the like of a tilting rotorcraft and a multi-rotor unmannedaerial vehicle are achieved.

Description

technical field [0001] The invention relates to the technical field of aircraft, in particular to a transmission system of a multi-axis, multi-directional tilting multi-rotor aircraft. Background technique [0002] At present, rotary-wing helicopters or rotary-wing UAVs that can be applied to low-airspace flight such as rescue and emergency rescue, delivery and transportation, and survey aerial photography can take off and land vertically, and hover accurately over specific positions to perform necessary work. Most of the designs of rotorcraft use a power unit to drive a rotor to provide flight lift for the aircraft, such as single-rotor, multi-rotor, and tilt-rotor aircraft; single-rotor aircraft are generally fuel-powered helicopters. Airplanes have long propeller blades and heavy take-off weight, but the downflow generated by the rotor is partially blocked by the fuselage, resulting in high energy consumption, low stability and safety, and take-off is often restricted by ...

AI Technical Summary

Problems solved by technology

[0002] At present, rotary-wing helicopters or rotary-wing UAVs that can be applied to low-airspace flight such as rescue and emergency rescue, delivery and transportation, and survey aerial photography can take off and land vertically, and hover accurately over specific positions to perform necessary work. Most of the designs of rotorcraft use a power unit to drive a rotor to provide flight lift for the aircraft, such as single-rotor, multi-rotor, and tilt-rotor aircraft; single-rotor aircraft are generally fuel-powered helicopters. Airplanes have long propeller blades and heavy take-off weight, but the downflow generated by the rotor is partially blocked by the fuselage, resulting in high energy consumption, low stability and safety, and take-off is often restricted by many climate and environmental conditions. Once the rotor or power A failure means the crash of the aircraft; however, multi-rotor aircraft are mostly used in small unmanned aircraft. Each rotor is driven by a power device, mostly electric drive, and the rotor cannot be tilted. The battery life is limited, and it cannot For the transportation of heavy cargo, multi-rotor aircraft are more stable, safer, more energy-efficient, more flexible in control, and more widely used than single-rotor aircraft. Multi-rotor aircraft with flexible flight control is a blank

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