noun
air brake; speedbrake
A device on an aircraft or vehicle that uses air resistance to reduce speed. In aviation, often a panel that extends from the wing or fuselage.
着陸時にパイロットは空力ブレーキを作動させた。
The pilot deployed the air brake during landing.
noun
aerobraking;
A spaceflight maneuver that uses a planet's atmosphere to slow a spacecraft. Distinct from the mechanical air brake on aircraft.
火星探査機は空力ブレーキを使って軌道に入った。
The Mars probe used aerobraking to enter orbit.