Buffer type undercarriage for unmanned helicopter

Abstract

The invention discloses a buffer type undercarriage for an unmanned helicopter, relates to an improvement on a skid undercarriage of a helicopter, in particular to a buffer type skid undercarriage foran unmanned helicopter and a layout mode of the buffer type skid undercarriage, and belongs to the technical field of design and manufacturing of the helicopters. The layout mode of the buffer type skid undercarriage is that the buffer type skid undercarriage is symmetrical about the left side and the right side along a central vertical surface of the helicopter; a single side structure comprisesanti-blocking connector assemblies, a buffer and a support pipe system; the quantity of the single-side anti-blocking connector assemblies is two; each single-side anti-blocking connector assembly comprises side covers, a cylindrical roller bearing, a thrust bearing pair and a T-shaped joint; a cylindrical roller bearing mounting seat and a thrust bearing mounting seat are respectively arranged at two ends of each T-shaped joint; the side covers are arranged on the outer sides of two ends of each T-shaped joint; the buffer comprises a radial spherical plain bearing, a piston barrel, a combined seal ring, a piston stopper, a piston, a piston ring, an air cylinder, a cylinder barrel, a bushing and an oil needle; the support pipe system comprises an elbow I, an elbow II, a skid elbow pipe, an antiskid sheet, a rear bracing tube joint and a rear bracing tube.

Description

technical field [0001] The invention relates to an improvement of a skid landing gear for unmanned helicopters, which belongs to the technical field of helicopter design and manufacture, and specifically relates to a cushioning skid landing gear and a landing gear for unmanned helicopters. the way it is laid out. Background technique [0002] In addition to assisting the unmanned helicopter to take off, land and park on the ground, another main function of the landing gear is to dissipate part or all of the impact kinetic energy generated by the landing of the unmanned helicopter. [0003] For general rigid skid landing gear, the landing impact kinetic energy mainly depends on the elastic deformation of the structure to overcome, which can easily lead to high overload coefficient or even "ground resonance". The drop frame is usually equipped with a buffer. [0004] For the skid landing gear with buffer device, this part of energy is absorbed by the sliding friction acting ...

AI Technical Summary

Problems solved by technology

The buffer and the main deformation mechanism of this type of landing gear are placed inside the fuselage, and only the skid bracket and skid tube are exposed outside the fuselage, which greatly reduces the aerodynamic resistance. Comfort requirements, the frame is deflected backward at a certain angle during design, so there is an angle between the buffer load and the surface of the frame, resulting in greater force on the frame and reduced life

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