Research Progress on the Effect of Structural Clearance of Aircraft Landing Gear on Shimmy Stability

As one of the main factors affecting the shimmy stability of aircraft in high speed rolling,the structural clearance of landing gear determines the safety and comfort of aircraft rolling.In this paper,the existing form of landing gear structural clearance is summarized,and the formation reasons of landing gear structural clearance on shimmy are analyzed.The existing landing gear shimmy clearance analysis models are described in detail,and the limitations of the models and future modeling direction are pointed out.Furthermore,the solving methods of the shimmy model with clearance are summarized through literature analysis,and the applicability of different methods is illustrated.The future research direction is prospected.