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Method for identifying aerodynamic center through ground sliding test

A technology of aerodynamic focus and sliding test, applied in the field of identification focus, can solve the problems of high risk, high cost, low result accuracy, etc., and achieve the effect of high risk

Active Publication Date: 2016-03-02
CHENGDU AIRCRAFT INDUSTRY GROUP
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AI Technical Summary

Problems solved by technology

[0003] In order to overcome the disadvantages of low accuracy, high cost and high risk of existing aerodynamic focus identification methods, the present invention provides a method for identifying aerodynamic focus through ground sliding tests. The method of the present invention can obtain the position of aerodynamic focus with simple steps and data Accurate, safe and reliable, low cost

Method used

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  • Method for identifying aerodynamic center through ground sliding test
  • Method for identifying aerodynamic center through ground sliding test
  • Method for identifying aerodynamic center through ground sliding test

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Embodiment Construction

[0040] A method for identifying aerodynamic focus through a ground sliding test, comprising the steps of:

[0041] A. Ground sliding test steps: including a. Unpowered sliding test steps:

[0042] The aircraft is not loaded with fuel, and the engine does not start; the whole aircraft is powered on, and the pre-taxi inspection is completed; the aircraft is towed by the tractor for taxiing;

[0043] During unpowered taxiing, the data recorded and analyzed by the Airborne Data Acquisition System (ADAS), Ground Data Processing System (GDAS) and flight reference recorder are used to check the structural subsystems, electromechanical subsystems, avionics\mission subsystems and The working status and matching status of the flight management subsystem;

[0044] b. Aerodynamic parameter determination coasting test procedure: through unpowered taxiing test, verify the operation of each sub-system of the whole machine, and then carry out aerodynamic parameter determination coasting test...

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Abstract

The invention discloses a method for identifying an aerodynamic center through a ground sliding test, and relates to the technical field of center identification. The method comprises the following steps: a ground sliding test step, an aerodynamic parameter measurement step, and an error analysis and data identification step. The method can obtain the position of the aerodynamic center, and is simple in step, accurate in data, safe, reliable, and low in cost.

Description

technical field [0001] The invention relates to a method for identifying focus, more specifically to a method for identifying aerodynamic focus through a ground sliding test. Background technique [0002] At present, the known aerodynamic focus identification method is obtained by conducting wind tunnel tests and flight tests, and correcting the test data. The wind tunnel test obtains the aerodynamic characteristics of the real aircraft indirectly from the aerodynamic characteristics of the model, including the aerodynamic focus, which requires similarity, interference correction and other links. Therefore, it is still difficult to obtain the aerodynamic parameters of the real aircraft. There are relatively mature methods for hole wall interference correction and Reynolds number correction for hole test data, but the accuracy of the correction results still needs to be further improved. The flight test can directly obtain the aerodynamic characteristics of the real aircraft...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 夏斌李涛吕凌英陈斌张斌颜永富
Owner CHENGDU AIRCRAFT INDUSTRY GROUP
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