In aeronauticsair brakes are a type of flight control used on aircraft to reduce speed during landing. Aeronautics is the science and practice of aerial locomotion, i. ... Aircraft flight controls allow a pilot to guide his plane to the destination. ... An aircraft is any machine capable of atmospheric flight. ...
Air brakes differ from spoilers in that air brakes are designed to increase drag while making little change to lift, spoilers greatly reduce lift while making little change to drag. Lift consists of the negative product of all the aerodynamic forces normal to the direction of the external airflow. ...
Often, both characteristics are desirable - most airliners for example 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 on landing. An airliner is a large fixed-wing aircraft (an aeroplane/airplane) initially designed for the transport of paying passengers, and usually operated by an airline company (which owns or leases the aircraft). ... In aerodynamics, form drag, profile drag, or pressure drag, is a component of parasitic drag created by wind hitting the body. ... KLM Fokker 70 with reverse thrust applied. ...
One interesting airbrake design is the deceleron, a special kind of 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. Aileron location on a Piper PA-28. ... The Northrop F-89 Scorpion was an early American jet-powered all-weather interceptor. ... The Northrop Corporation was a leading aircraft manufacturer of the United States. ... United States Air Force B-2 Spirit The B-2 Spirit, sometimes known as the B-2 Bomber, is an American multi-role stealth bomber capable of delivering both conventional and nuclear weapons. ...
The aircraft is equipped with similar avionics and thrust vectoring as the Su-37, for superior combat agility and manoeuvrability.
The aircraft normally carries 5,090kg of fuel in three integral fuel tanks in the fuselage and a single integral split tank with each half installed in the outer wings.
A brake parachute compartment is installed in the tailcone at the rear of the fuselage.
A drum brake is a brake in which the friction is caused by a set of shoes or pads that press against the inner surface of a rotating drum.
Drum brakes with internal shoes have a particular disadvantage; when the drums are heated by hard braking the diameter of the drum increases due to the expansion of the material and the brakes must be further depressed to obtain effective braking action.
A muzzle brake is a device that is affixed to the muzzle of a firearm, and which redirects propellant gases to either counter the recoil of the gun, or to prevent the muzzle from climbing during rapid fire.
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