Variable-propeller-pitch multi-rotor aircraft driven by multiple oil engines

Abstract

The invention discloses a variable-propeller-pitch multi-rotor aircraft driven by multiple oil engines. The multi-rotor aircraft comprises an aircraft body and an aircraft rack, wherein the aircraft rack is mounted on the aircraft body; the aircraft rack comprises four aircraft arms and oil-engine power units; the aircraft rack is in a cross shape and formed by two pairs of the aircraft arms in abutting connection; each oil-engine power unit is mounted at the end part of the corresponding aircraft arm; the aircraft body comprises an upper center plate, a lower center plate, an oil tank and a control system; the upper center plate is positioned on the cross-shaped aircraft rack; the lower center plate is positioned under the cross-shaped aircraft rack; the control system is positioned on the upper center plate; the oil tank is positioned under the lower center plate. The multi-rotor aircraft disclosed by the invention has the benefits that through a structure driven by multiple oil engines, the time of endurance of the multi-rotor aircraft is prolonged, and the loading capacity of the multi-rotor aircraft is improved; throttles are regulated through steering engines and propeller-pitch regulators, so that the tensile force is changed along with propeller pitch; the multi-rotor aircraft is good in linearity, and easy to control, and solves the problem that the reaction of oil engines is slow.

Description

technical field [0001] The invention relates to the structural design and flight control of a multi-rotor aircraft. In particular, it relates to multi-engine-driven variable-pitch multi-rotor aircraft. Background technique [0002] Compared with the previous multi-rotor aircraft, the variable-pitch multi-rotor aircraft driven by multiple oil engines has the advantages of large load and long endurance, which significantly broadens its application range. It has broad application prospects in many civilian fields such as agriculture, forestry and plant protection, aerial photography, aerial monitoring, data relay, vertical transportation in complex terrain, power line inspection, and power construction. [0003] At present, most multi-rotor aircraft are driven by batteries. Since the energy stored by batteries per unit mass is far less than that of fossil fuels such as gasoline, the flight time and load capacity of current multi-rotor aircraft are very limited, which greatly l...

AI Technical Summary

Problems solved by technology

[0003] At present, most multi-rotor aircraft are driven by batteries. Since the energy stored by batteries per unit mass is far less than that of fossil fuels such as gasoline, the flight time and load capacity of current multi-rotor aircraft are very limited, which greatly limits the application of multi-rotor aircraft. Fields and developments, especially cannot meet the current trend of increasing load capacity and flight time requirements in multiple application fields

[0004] On the other hand, although some rotorcraft use oil engines as power sources, they generally cannot solve the disadvantage of slow control response of oil engines, which is one of the reasons why the development of oil engine-powered multi-rotor aircraft is limited.

[0005] The existing variable-pitch aircraft are all driven by a single machine, which also limits the flight time and load capacity of the variable-pitch aircraft

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