An airfoil device, aircraft and stall detection method

Abstract

This invention discloses an airfoil device, an aircraft, and a stall detection method. The airfoil device includes an airfoil structure and a stall sensor. The stall sensor is disposed on the convex surface of the airfoil structure and includes a fixed friction part and a movable friction part. The movable friction part is located between the fixed friction part and the convex surface. In the absence of airflow, there is an angle between the movable and fixed friction parts. When airflow is present, the movable friction part vibrates, causing it to contact and separate from the fixed friction part, generating an electrical signal. Based on the acquired electrical signal, the degree of stall of the airfoil device is determined. Thus, the stall sensor can detect stall in the airfoil device, preventing it from losing control. Furthermore, the stall sensor has a simple structure and can be made small, making it suitable for airfoil structures of small aircraft. It also does not require external power, reducing manufacturing costs.

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