Small-size self-balancing type weather vane

Abstract

The invention belongs to the technical field of measurement for attack angles and sideslip angles in an aircraft air data system and specifically relates to a small-size self-balancing type weather vane. The problems of a large influence on aircraft or product profiles and a smaller measurable angle scope of the present blade type weather vane are solved. The small-size self-balancing type weather vane comprises a rotating shaft, a weather vane rod and a weather vane made of aluminum alloy material, wherein the weather vane rod comprises a front half part made of stainless steel material and a rear half part made of aluminum alloy material; the front half part has an equal-diameter structure; the rear half part has a streamline contracting type structure; the diameter of the front end of the rear half part connected with the front half part is the same as the diameter of the front half part; the weather vane has a two-side symmetrical platy structure. The small-size self-balancing type weather vane can be used for effectively eliminating the influence on the aircraft or product surface and accurately outputting the attack angle and sideslip angle data; the measurement scope of an attack angle / sideslip angle sensor is greatly increased; the highest use mach number can reach 2.5 and the 340-degree measuring scope can be achieved.

Description

technical field [0001] The invention belongs to the technical field of angle of attack and sideslip angle measurement in an aircraft air data system, and in particular relates to a small self-balancing wind vane. Background technique [0002] Existing angle-of-attack and side-slip angle vanes are generally blade-type, and the weather vane itself is very heavy, and counterweights need to be installed inside the housing for balance, resulting in excessive weight of the entire product. In addition, due to the limitation of the internal counterweight structure, the measurement range of the angle of attack and sideslip angle is very small, generally not exceeding 30°. The angle of attack and sideslip angle sensor developed by the blade wind vane is close to the surface of the aircraft or the product, and the measurement of the angle of attack and side slip angle will be affected by the airflow on the surface of the aircraft, so it must be compensated by a program; the blade wind ...

AI Technical Summary

Problems solved by technology

[0003] The present invention solves the problem that the wind vane of the existing blade-type vane angle of attack and side-slip angle sensor is close to the surface of the aircraft or product, and is greatly affected by the profile of the aircraft or product. In addition, the blade-type weather vane has a large weight and can measure the angle For smaller range problems, a small self-balancing wind vane is provided

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