Aircraft attack angle correction curve acquisition method

Abstract

The invention relates to an aircraft attack angle correction curve acquisition method. The method comprises the steps that step one, the measuring range and the type of an attack angle sensor are selected; step two, the installing area of the attack angle sensor is determined; step three, the installing position of the attack angle sensor is determined; step four, flight testing is performed; and step five, a correction curve is acquired. The problems of attack angle false alarm caused by inaccurate measurement of the attack angle in the flight can be solved by the method. The method has wide application prospect and has application value in the design of the complex pneumatic profile parts of the special aircraft.

Description

technical field [0001] The invention relates to an acquisition method of an aircraft angle of attack correction curve. It belongs to the technical field of aviation. Background technique [0002] The invention discloses a method for measuring the angle of attack of an aircraft. This technology is mainly to design several aspects of the angle of attack sensor type selection, quantity, and installation location selection and its correction after flight test verification, so as to obtain accurate angle of attack data . [0003] The angle of attack is the angle between the projection of the flight speed on the symmetrical plane of the aircraft and the longitudinal axis. It is one of the important flight parameters of flight mechanics, and its accuracy is directly related to the flight quality and safety. [0004] Aircraft stall is a phenomenon in which the angle of attack of the aircraft exceeds the critical angle of attack, and severe airflow separation occurs on the lifting ...

AI Technical Summary

Problems solved by technology

[0004] Aircraft stall is a phenomenon in which the angle of attack of the aircraft exceeds the critical angle of attack, and severe airflow separation occurs on the lifting surface of the wing, resulting in a sudden drop in lift and a sharp increase in resistance. resulting in a plane crash

Therefore, the inaccurate measurement of the angle of attack system will pose a great danger to flight safety.

[0005] The original angle-of-attack system equipped on some aircraft only has a single angle-of-attack alarm function. For the false alarm of the angle of attack on some aircraft, the method of suppressing the alarm signal with a simple suppression function exists. It is a huge hidden danger to flight safety, and pilots have strongly responded to this problem. Therefore, the accurate measurement method of the angle of attack is a key technology and core technology that needs to be solved urgently.