A method for quickly solving a pressure conduction delay correction parameter of a wind tunnel test

By optimizing the scanning valve layout and data processing methods in wind tunnel tests, the problems of large computational load and poor timeliness in pressure transmission delay synchronization processing were solved, achieving fast and accurate pressure data synchronization correction and meeting the real-time analysis requirements of aircraft model tests.

CN117168753BActive Publication Date: 2026-07-21INST OF HIGH SPEED AERODYNAMICS OF CHINA AERODYNAMICS RES & DEV CENT
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF HIGH SPEED AERODYNAMICS OF CHINA AERODYNAMICS RES & DEV CENT
Filing Date
2023-06-12
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

In existing technologies, the synchronous processing of pressure transmission delay in continuous variable angle of attack pressure measurement tests in wind tunnels involves large computational loads, is cumbersome to operate, and has poor timeliness, failing to meet the need for rapid acquisition of detailed and accurate test data.

Method used

In a stepped pressure test, scanning valve modules were set up inside the model cavity with consistent pipe lengths. High-frequency sampling was used to acquire data, and suitable measurement points were selected using interpolation, linear fitting, and graphical display tools. Combined with pre-correction parameters and linear or quadratic fitting, pressure transmission delay correction parameters were quickly calculated.

Benefits of technology

It significantly reduces the amount and complexity of computational data, quickly obtains synchronous correction parameters, improves the accuracy and timeliness of data processing, and meets the real-time analysis requirements of wind tunnel tests.

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Abstract

The application discloses a method for quickly solving a wind tunnel test pressure conduction delay correction parameter, and the method obtains various parameters in a test field through a measuring system, and synchronously corrects and processes test data to meet the requirement of the quasi-real-time analysis of test data in a blowing test. Meanwhile, a graphical display tool is used to distinguish the coupling effect of the pipeline delay effect and the self aerodynamic phenomenon in a pressure measuring point, accurately select the pressure measuring point suitable for the synchronous parameter calculation, and further use the graphical verification means of the correction effect, so that the correction parameter deviation caused by the improper selection of the pressure measuring point can be effectively solved, the accuracy of the synchronous correction parameter measurement is improved, and the interference quantity possibly caused by the nonlinear change pressure measuring point can be effectively removed, and the accuracy of the synchronous correction parameter measurement is improved.
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