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A Calculation Method for the Maximum Subsidence of Aircraft Tire Taking Off Under Compression

A technology of aircraft tires and calculation methods, applied in calculation, computer-aided design, design optimization/simulation, etc., can solve problems such as low calculation accuracy and inapplicable calculation methods

Active Publication Date: 2021-10-01
SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for calculating the maximum sinkage of aircraft tires that take off under pressure. Using the nominal size of the tires, the calculation method for the maximum sinkage can be established by applying the resultant load under pressure to solve the current problem. The calculation method is not applicable or the calculation accuracy is low

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  • A Calculation Method for the Maximum Subsidence of Aircraft Tire Taking Off Under Compression
  • A Calculation Method for the Maximum Subsidence of Aircraft Tire Taking Off Under Compression
  • A Calculation Method for the Maximum Subsidence of Aircraft Tire Taking Off Under Compression

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Embodiment Construction

[0025] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention.

[0026] Take the nose landing gear tire of an aircraft taking off under certain pressure as an example, the known data is shown in the table below, and the calculation process of the sinkage δ is as follows:

[0027]

[0028] First, calculate the front tire vertical load F for the case under compression y

[0029]

[0030] Among them, the weight of the whole machine is distributed in the mass force F of the nose landing gear n for

[0031]

[0032] In the above formula, F y is the vertical load borne by the front tire; F c is the compressive load, α is the ejection angle; F hb is the pinning load, and β is the pinning angle. f n is the mass force of the nose landing gear ...

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Abstract

The invention relates to a method for calculating the maximum sinkage of an aircraft tire taking off under pressure, belonging to the field of aircraft design, which includes step 1: calculating the tire vertical force F under pressure y ;Step 2: According to the tire vertical force F y Determine the tire sinkage δ. Compared with the prior art, the calculation method of the present invention has the following advantages: a, the prior art is more accurate for the calculation of the maximum sinkage of land-based aircraft landing gear tires, and for the maximum sinkage of the landing gear tires of the aircraft taking off under pressure. Calculation of the sinkage, the error of the prior art is relatively large; the present invention is applicable to the calculation of the maximum sinkage of the landing gear tire of the aircraft taking off under pressure, compared with the measured data, the error is within 5%; b, the prior art does not consider ejection Rod, check bar load, the present invention has considered ejection bar, check bar load; c, prior art calculates the tire compression amount, tire interior gas is according to isothermal process; The present invention considers rapid compression characteristic, adopts adiabatic process.

Description

technical field [0001] The invention belongs to the technical field of aircraft design, and in particular relates to a method for calculating the maximum sinkage of an aircraft tire that takes off under pressure. Background technique [0002] The landing gear tire of a certain type of aircraft is a special type of tubeless tire, see attached figure 1 , which consists of a tire 1 and a wheel 2. This type of tire needs to meet the strict load-bearing design requirements of the aircraft under pressure. However, for this type of tire, the key issue is exactly how to calculate the maximum sinkage of the tire under pressure, so as to ensure that the tire does not blow out or be flat under pressure. Contents of the invention [0003] The purpose of the present invention is to provide a method for calculating the maximum sinkage of aircraft tires that take off under pressure. Using the nominal size of the tires, the calculation method for the maximum sinkage can be established b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/15G06F30/20G06F119/14
CPCG06F30/15G06F30/20G06F2119/06
Inventor 姚念奎王佳莹卢学峰杜金柱
Owner SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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