Aircraft dynamic scale model landing gear bumper spring design method

Abstract

The invention relates to an aircraft dynamic scale model landing gear bumper spring design method. The method comprises the following steps of 1, estimating a ground load and calculating landing gear loads, wherein the landing gear loads comprise a nose landing gear load Fn and a main landing gear load Fm; 2, scaling the size of a landing gear bumper according to a predetermined proportion; 3, fitting a static pressure curve of the landing gear bumper into a linear curve; 4, determining bumper spring design constraint parameters according to a predetermined proportion; 5, establishing a bumper spring effective parameter calculation formula; 6, iteratively computing bumper spring effective parameters; and 7, selecting an optimum parameter group. According to the aircraft dynamic scale model landing gear bumper spring design method, landing gear bumpers can be simplified to the greatest extent under the premise of ensuring the mechanical properties and model sizes of the landing gear bumpers, aircraft dynamic scale model landing gear bumpers are designed most really, the design and processing costs are reduced, and the dynamic requirement and similarity requirement are satisfied.

Description

technical field [0001] The invention belongs to the technical field of aircraft structure strength dynamics tests, and in particular relates to a design method for a landing gear buffer spring of an aircraft dynamics scale model. Background technique [0002] The scaled model of aircraft dynamics is to carry out various tests on the real aircraft after being scaled down, which can supplement the insufficiency of digital analysis and simulation. The landing gear is the medium between the aircraft and the ground, and the performance of the landing gear buffer spring determines the performance of the landing gear. [0003] In the previous dynamic model design, the landing gear buffer design has the following methods: [0004] 1) The design of the model landing gear buffer is exactly the same as that of the real aircraft, which is expensive and complex in structure; [0005] 2) The model landing gear buffer is simplified as a spring, which can only meet the rough mechanical pr...

AI Technical Summary

Problems solved by technology

[0004] 1) The design of the model landing gear buffer is exactly the same as that of the real aircraft, which is expensive and complex in structure;

[0005] 2) The model landing gear buffer is simplified as a spring, which can on

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