Real-time monitoring of flow turbulence is very difficult but extremely important in fluid dynamics, which plays an important role in flight safety and control. Turbulence can cause airflow to detach at the end of the wings, potentially resulting in the aerodynamic stall of aircraft and causing flight accidents. Here, we developed a lightweight and conformable system on the wing surface of aircraft for stall sensing. Quantitative data about airflow turbulence and the degree of boundary layer separation are provided in situ using conjunct signals provided by both triboelectric and piezoelectric effects. Thus, the system can visualize and directly measure the airflow detaching process on the airfoil, and senses the degree of airflow separation during and after a stall for large aircraft and unmanned aerial vehicles.

流动湍流的实时监测非常困难，但在流体动力学中极其重要，对飞行安全和控制具有重要作用。湍流会导致气流在机翼末端分离，可能导致飞机的空气动力失速并引发飞行事故。在这里，我们在飞机机翼表面开发了一种轻型且贴合的系统，用于失速传感。使用摩擦电和压电效应提供的联合信号，就地提供了关于气流湍流和边界层分离程度的定量数据。因此，该系统可以可视化并直接测量机翼上的气流分离过程，感知大型飞机和无人机失速期间和失速后的气流分离程度。