Coaxial helicopter control-transmission system based on single swashplate

Abstract

The invention discloses a coaxial helicopter control-transmission system based on a single swashplate. The coaxial helicopter control-transmission system comprises a transmission system, a cyclic pitch control system and a course control system; the transmission system comprises a transmission gear set, a motor and four concentric shafts and can achieve ascending and descending control over a helicopter; the cyclic pitch control system comprises the two-freedom-degree single swashplate, a longitudinal steering engine and a transverse steering engine and can achieve control over rolling and pitching of the helicopter; and the course control system comprises a lower rotor wing course control slip ring and a course steering engine and can achieve control over the course of the helicopter. According to the coaxial helicopter control-transmission system, the mode that the single swashplate, rotor wings controllable in rotation speed and the course control slip ring cooperate with one another is adopted, under the condition of completing control over pitching, rolling, ascending, descending and course of the helicopter, the quantity, size and weight of parts are decreased, the mechanismcomplexity is reduced, the size of the whole control system is decreased, and accordingly, the higher loading capacity and longer duration of flight are obtained.

Description

technical field [0001] The invention relates to the technical field of aircraft design, in particular to a coaxial helicopter control-transmission system based on a single automatic tilter. Background technique [0002] The coaxial helicopter uses the upper and lower rotors which are coaxially reversed to provide lift, and the heading control is realized by changing the balanced counter torque of the upper and lower rotors, without the need for a tail rotor. It has the advantages of small size, compact structure and high hovering efficiency. The Russian Kamov Design Bureau has developed and produced a series of manned coaxial helicopters, which are widely used in the national economy and military fields. In China, Beihang independently developed a coaxial unmanned helicopter in the 1980s, successfully realized autonomous navigation and flight, and began to apply it in different fields. As the energy and power of drones are largely driven by lithium battery motors, Beihang ...

AI Technical Summary

Problems solved by technology

[0007] The above problems conflict with the structural weight and size requirements of modern electric unmanned helicopters, resulting in a relatively large structural weight of electric coaxial unmanned helicopters, offsetting its aerodynamic advantages

Coaxial UAVs with traditional layout cannot meet the small, light and portable requirements of modern unmanned helicopters; they cannot greatly surpass multi-rotor UAVs in terms of load and endurance

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