Method for evaluating uncertainty of measured value of aerodynamic balance in wind tunnel test

Method for evaluating uncertainty of measured value of aerodynamic balance in wind tunnel test

The invention discloses a method for evaluating uncertainty of a measured value of an aerodynamic balance in a wind tunnel test, and relates to the field of wind tunnel tests of aerospace crafts. A repeatability test is carried out by selecting a certain state of an aircraft aerodynamic characterist...

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Hauptverfasser: XU XIN, YANG YIN, LIU GUANGYUAN, LIU DAWEI, CHEN SHENGZHAN, LI WEIQUN, WANG YUANJING, LIU XIANG, LI QIANG, PENG XIN, LI QIAN
Format: Patent
Sprache:chi ; eng
Schlagworte:
MEASURING
PHYSICS
TESTING
TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES
TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
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creator XU XIN
YANG YIN
LIU GUANGYUAN
LIU DAWEI
CHEN SHENGZHAN
LI WEIQUN
WANG YUANJING
LIU XIANG
LI QIANG
PENG XIN
LI QIAN
description The invention discloses a method for evaluating uncertainty of a measured value of an aerodynamic balance in a wind tunnel test, and relates to the field of wind tunnel tests of aerospace crafts. A repeatability test is carried out by selecting a certain state of an aircraft aerodynamic characteristic wind tunnel test, a comprehensive uncertainty result of a balance measured value in the test state is obtained, and an uncertainty synthesis mathematical model including the influence of the balance measured value uncertainty, the model attitude angle uncertainty and the flow field uncertainty is constructed. The uncertainty values are used as necessary input conditions and are expanded and applied to balance measured value comprehensive uncertainty calculation when a flow field of a test or a model state is changed; and a foundation is laid for solving aerodynamic uncertainty evaluation results of all test states of an aircraft aerodynamic database test. The method is based on a single-state repeatability test
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subjects MEASURING
PHYSICS
TESTING
TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES
TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
title Method for evaluating uncertainty of measured value of aerodynamic balance in wind tunnel test
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