Everything about Air Brake Aircraft totally explained
In
aeronautics air brakes are a type of
flight control used on
aircraft to reduce speed during landing.
Air brakes differ from
spoilers in that air brakes are designed to increase
drag while making little change to
lift, whereas spoilers greatly reduce the lift-to-drag ratio and a higher angle of attack required to maintain lift, resulting in a higher stall speed.
Often, characteristics of both spoilers and airbrakes are desirable and are combined - most modern
airliner jets feature combined spoiler and airbrake controls. On landing, the deployment of these spoilers causes a dramatic loss of lift and hence the weight of the aircraft is transferred from the wings to the undercarriage, allowing the wheels to be mechanically braked with much less chance of skidding. In addition, the
form drag created by the spoilers directly assists the braking effect.
Reverse thrust is also used to help slow the aircraft after landing.
The British
Blackburn Buccaneer naval strike aircraft designed in the 1950s had a tail cone that was split and could be hydraulically opened to the sides to act as a variable air brake. It also helped to reduce the length of the aircraft in the confined space on an aircraft carrier.
Sukhoi
Su-30 has an airbrake just behind the cockpit.
Split control surfaces
The
deceleron is an
aileron that functions normally in flight but can split in half such that the top half goes up as the bottom half goes down to brake. This technique was first used on the
F-89 Scorpion and has since been used by
Northrop on several aircraft, including the
B-2 Spirit.
The
space shuttle uses a similar system. The split rudder opens on landing to act as a speedbrake
(External Link
), as shown in the accompanying photo.
The
Bugatti Veyron car uses an airbrake in the form of a deployable spoiler.
Further Information
Get more info on 'Air Brake Aircraft'.
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