Definition
A long, narrow aerodynamic surface attached to the fuselage or wing of an aircraft to control or modify the airflow over the airframe. Strakes are typically used to improve directional stability, generate vortices that energize airflow over the wing at high angles of attack, or reduce drag.
Plain English
A thin, fin-like strip added to the body or wing of an aircraft to shape the airflow around it, helping the aircraft fly more smoothly or stay controllable at steep angles.
Context Anchor
Seen during aircraft design discussions, preflight inspections, or descriptions of small fixed fins and strips on the fuselage, engine area, or wing root.
Derivation
From Old English 'straca,' meaning a stripe or streak. The aviation use keeps that sense — a long, narrow strip running along the surface of the aircraft.
Why Pilots Care
The vortex created by the strake delays wing-root stall and improves controllability during aggressive maneuvering.
Intuition Check
Do not assume a strake is just decorative trim. On an aircraft, it is a shaped surface intended to affect airflow.
Example Sentence 1
The leading-edge strakes on the F-16 generate vortices that help maintain lift at high angles of attack.
Example Sentence 2
During the walk-around the instructor showed how the strakes channel high-energy air onto the wing upper surface.