A Method for Acquiring Pose and Orientation of Embedded Wind Tunnel Free Flight Test Model

A technology for obtaining methods and test models, which can be used in aerodynamic tests, machine/structural component testing, instruments, etc. It can solve the problems of low accuracy of inertial sensors and improve the test accuracy.

Active Publication Date: 2022-05-27
CHINA ACAD OF AEROSPACE AERODYNAMICS
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AI Technical Summary

Problems solved by technology

[0004] In wind tunnel tests, inertial devices are currently mostly used for static angle measurement rather than pose calculation, and due to the low accuracy of MEMS inertial sensors

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  • A Method for Acquiring Pose and Orientation of Embedded Wind Tunnel Free Flight Test Model
  • A Method for Acquiring Pose and Orientation of Embedded Wind Tunnel Free Flight Test Model
  • A Method for Acquiring Pose and Orientation of Embedded Wind Tunnel Free Flight Test Model

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Embodiment Construction

[0061] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0062] In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or system must have a specific or...

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Abstract

The invention discloses a method for obtaining the position and attitude of a built-in wind tunnel free flight test model, which relates to the technical field of flight tests. The effective data of the test is obtained by intercepting the inertial sensor data according to preset rules, wherein the effective data Including, three-axis accelerometer data and three-axis gyro output data; performing low-pass filtering on the three-axis accelerometer data to obtain first data, removing high-frequency vibration interference; performing a process on the first data and three-axis gyro output data The second data is obtained by band-stop filtering to remove the pulsating interference of the wind-driven airflow; the recursive pose calculation is performed based on the second data to obtain the six-degree-of-freedom pose information of the aircraft model within the effective time during the test process, which can be used for wind tunnel The application scenario of free flight test to improve the test accuracy.

Description

technical field [0001] The technical field of wind tunnel flight test, in particular to a method for acquiring the pose of an embedded wind tunnel free flight test model. Background technique [0002] The wind tunnel free flight test is a specific test method in the field of wind tunnel testing. Any support constraints, other than gravity, are only subject to aerodynamic forces. By capturing the position and attitude information of the aircraft model in real time, the static and dynamic stability derivative coefficients and other related aerodynamic coefficients of the aircraft can be obtained. Compared with the traditional wind tunnel test, its biggest advantage is that there is no support interference, and it can more realistically simulate the actual flight state of the aircraft. [0003] The pose capture of the aircraft model is the core part of the wind tunnel free flight test. At present, the pose capture of wind tunnel free-flight test models is based on high-speed...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M9/06
CPCG01M9/06
Inventor 赵煊刘国东祝令谱王帅张娜
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS
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