speedbrake; air brake
Aircraft term for a device that increases drag to reduce speed; also used in some automotive contexts. The cross-reference to 空力ブレーキ suggests a similar aerodynamic braking function.
See also: 空力ブレーキ
The pilot deployed the speedbrake during landing.
This aircraft's speedbrakes are located on the upper surface of the main wings.
Variant with a middle dot; less common in running text.
Loanword from English 'speed brake'.