Design method for front landing gear of full-maneuverable mechanical model and simplified structure

Abstract

The invention relates to a design method for a front landing gear of a full-maneuverable mechanical model. The design method comprises the following steps: I, acquiring a design size of the front landing gear of the full-maneuverable mechanical model according to the size of a real front landing gear and a predetermined shrink ratio; II, acquiring a force transfer structure of the front landing gear of the model according to a force transfer structure of the real front landing gear, and calculating the mechanical property of the force transfer structure of the simplified front landing gear in a simulation way; III, performing fitting according to the performance parameters of a hydraulic buffer and a tire in the real front landing gear to obtain a spring rigidity coefficient and a tire performance parameter in the simplified structure of the front landing gear; IV, recalculating the spring size and the tire size according to the mechanical property obtained in the step II and the spring rigidity coefficient and the tire performance parameter obtained in the step III; V, performing iterative optimization to obtain an optimal size of the front landing gear of the full-maneuverable mechanical model. Adopting the design method for the front landing gear of the full-maneuverable mechanical model ensures completely that the force transfer structure and the force transfer characteristic can meet the dynamic test requirement.

Description

technical field [0001] The invention belongs to the technical field of aircraft structure strength tests, and in particular relates to a design method of a nose landing gear of a dynamic model of the whole aircraft and a simplified structure. Background technique [0002] The nose landing gear is an accessory device used to support the aircraft and move on the ground when the lower part of the aircraft is used for take-off and landing or ground taxiing. In the previous dynamic model design, the design of the front landing gear buffer has the following methods: [0003] (1) The design of the front model landing gear is exactly the same as that of the real aircraft. The cost of the front landing gear buffer is high and the structure is complicated; at the same time, due to the limited size and space of the front landing gear of the model, the processing requirements are extremely high; [0004] (2) The front landing gear of the model is a combination of a single rod and a tir...

AI Technical Summary

Problems solved by technology

[0003] (1) The design of the front model landing gear is exactly the same as that of the real aircraft. The cost of the front landing gear buffer is high and the structure is complicated; at the same time, due to the limited size and space of the front landing gear of the model, the processing requirements are extremely high;

[0004] (2) The front landing gear of the model is a combination of a single rod and a tire, without a buffer part. In the test, the front landing gear only provides support and cannot meet the requirements of the mechanical performance curve in the test

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