Stall
Version 1.0.0 · Updated 2026-07-28
CORE DEFINITION
In fluid dynamics, a stall is a condition in which the angle of attack of an airfoil increases to a certain extent (reaching a critical value), causing the lift force generated by the airfoil to suddenly decrease and the aircraft's altitude to drop rapidly. A stall does not mean that the engine has stopped working or that the aircraft has lost its forward speed. Since most discussions about stalls are related to aviation, the following focuses on the relationship between stalls and aircraft (fixed-wing aircraft).
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In fluid dynamics, a stall is a condition in which the angle of attack of an airfoil increases to a certain extent (reaching a critical value), causing the lift force generated by the airfoil to suddenly decrease and the aircraft's altitude to drop rapidly. A stall does not mean that the engine has stopped working or that the aircraft has lost its forward speed. Since most discussions about stalls are related to aviation, the following focuses on the relationship between stalls and aircraft (fixed-wing aircraft).
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When the angle of attack of an aircraft wing exceeds the critical value, the airflow on the upper surface separates, causing a sudden decrease in lift and a sharp increase in drag, leading to loss of control. The mechanism is that Bernoulli lift relies on attached flow; separation results in a stall.
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- zh.wikipedia.orghttps://zh.wikipedia.org/wiki/%E5%A4%B1%E9%80%9Fverified
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