An automatic detection method of angle of attack error and its correction system

Abstract

The invention belongs to the field of aircraft avionics. Provided are an automatic detection method for an angle of attack error and a correction system thereof. The system includes: air data computer (1), airspeed tube (2), angle of attack sensor (3), display and control system (4), flight control system (5), inertial navigation system (6); air data computer ( 1) Receive the static pressure signal of the pitot tube (2), which is used to convert the lifting speed; receive the local angle-of-attack signal of the angle-of-attack sensor (3), which is used to calculate the true angle of attack before correction; receive the flight control system (5) Altitude flight on or off signal, used to judge whether to deny the altitude flight; receiving the pitch angle θ, roll angle γ, and heading angle of the inertial navigation system (6) to judge the aircraft attitude; receiving the display and control system (4) The binding and clearing signals are used for the correction or clearing operation of the angle of attack error; the current binding value is sent to the display and control system (4), and the error is automatically checked, which is used to display the binding and detection results of the current angle of attack error.

Description

technical field [0001] The invention belongs to the field of aircraft avionics. The invention proposes an automatic detection method and a correction system for the angle of attack error of an aircraft aiming at the installation error of the angle of attack of the aircraft and the error generated during use. Background technique [0002] The angle of attack is defined as the angle between the wing chord of the aircraft and the oncoming airflow. It is one of the important atmospheric data. It is very important to measure it accurately. The fire control system, cruise control system and stall warning system of the aircraft are all inseparable. Angle of attack information for flying the aircraft. At the same time, the angle of attack can correct the static pressure and dynamic pressure, which is used to correct the air pressure altitude and airspeed of the aircraft. Therefore, obtaining accurate angle of attack information is very important for the combat capability and safet...

AI Technical Summary

Problems solved by technology

[0003] During the aircraft manufacturing process, there will be a certain deviation in the installation of the angle of attack sensor, and with the use of the aircraft in the field, the structure at the installation position of the angle of attack sensor will be deformed, resulting in the deviation of the angle of attack indication error, and the fault is not easy to find

The root cause of this kind of failure is that the installation zero position of the angle of attack sensor is offset, and the failure lacks an effective and quick inspection method and correction method

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