Design And Dynamic Analysis Of A Helicopter Landing Gear Parameters

The landing gear is used to support the helicopter to ensure that the ground gliding and absorb energy and reduce bump stroke for rough landing. In order to explorer in the design of landing gear of helicopter , this type of helicopter to demonstrate architecture, according to the requirements of the new generation landing gear to select gear structure. Gear shock is established to design parametric of landing gear dynamic model, to do Landing Gear Dynamics Analyses-Drop Analyses, based on the measured power curve of the analysis to determine the parameters and adjust the filling holes size approach.1. The landing gear-type structure and characteristics is compared to select the best model for a particular landing gear model. According to the overall design and technical requirements to select the landing gear-type structure, the post-point type is been select, the main landing gear for the rocker, Nose Landing-Gear is strut.2. the parameters of the landing gear is been assessed by the ADMAS / aircraft , anti-crash is account to in the design of the beginning of the landing gear, to modify the design parameters which is based on energy of curve of Landing Gear Dynamics Analyses-Drop Analyses, low-pressure chamber, initial volume of gas changing index, the effective pressure gas chamber air cushion is analysis to Buffering properties of the landing gear. The results showed that: To absorb the same energy, increasing the effective pressure gas area, increasing the low-pressure gas chamber or increasing the inflation pressure can make the landing gear changing index of greater vertical velocity under impact loading; if the amount is not change to absorbed power and asked for the same compression stroke, you can also increase the initial size and inflation pressure.3. According to the parameters of the landing gear and rotor,it analysis ground resonance of the helicopter to modify the landing gear to provide the basis parametersThe work is pre-research exploration for the development of a helicopter landing gear system.