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The deceleron, or split aileron, was developed in the late 1940s by Northrop, originally for use on the F-89 Scorpion fighter. It is a two-part aileron that can be deflected as a unit to provide roll control, or split open to act as an air brake. Decelerons are used on the Fairchild Republic A-10 Thunderbolt II, and in turn to a stabilizer the Northrop Grumman B-2 Spirit flying wing.^[1] In differential use they impart yaw moment, potentially obviating the rudder and vertical stabilizer control surface, although requiring active flight control.

References

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^ https://media.defense.gov/2021/Aug/18/2002834486/-1/-1/0/LOOKBACK_FLYING%20WINGS-PART%201_SM.PDF ^{[bare URL PDF]}

External links

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Media related to Decelerons at Wikimedia Commons
XF-89 Research Report

v t e Aircraft components and systems
Airframe structure	Aft pressure bulkhead Cabane strut Canopy Crack arrestor Cruciform tail Dope Empennage Fabric covering Fairing Flying wires Former Fuselage Hardpoint Interplane strut Jury strut Leading edge Lift strut Longeron Nacelle Rib Spar Stabilizer Stressed skin Strut T-tail Tailplane Trailing edge Triple tail Twin tail V-tail Vertical stabilizer Wing root Wing tip Wingbox
Flight controls	Aileron Airbrake Artificial feel Autopilot Canard Centre stick Deceleron Dive brake Dual control Electro-hydraulic actuator Elevator Elevon Flaperon Flight control modes Fly-by-wire Gust lock HOTAS Rudder Rudder pedals Servo tab Side-stick Spoiler Spoileron Stabilator Stick pusher Stick shaker Trim tab Wing warping Yaw damper Yoke
Aerodynamic and high-lift devices	Active Aeroelastic Wing Adaptive compliant wing Anti-shock body Blown flap Channel wing Dog-tooth Drag-reducing aerospike Flap Gouge flap Gurney flap Krueger flap Leading-edge cuff Leading-edge droop flap LEX Slats Slot Stall strips Strake Variable-sweep wing Vortex generator Vortilon Wing fence Winglet
Avionic and flight instrument systems	ACAS Air data boom Air data computer Aircraft periscope Airspeed indicator Altimeter Annunciator panel Astrodome Attitude indicator Compass Course deviation indicator EFIS EICAS Flight management system Glass cockpit GPS Head-up display Heading indicator Horizontal situation indicator INS ISIS Multi-function display Pitot–static system Radar altimeter TCAS Transponder Turn and slip indicator Variometer Yaw string
Propulsion controls, devices and fuel systems	Autothrottle Drop tank FADEC Fuel tank Gascolator Inlet cone Intake ramp NACA cowling NACA duct Self-sealing fuel tank Splitter plate Throttle Thrust lever Thrust reversal Townend ring War emergency power Wet wing
Landing and arresting gear	Aircraft tire Arrestor hook Autobrake Conventional landing gear Drogue parachute Landing gear Landing gear extender Oleo strut Tricycle landing gear Tundra tire
Escape systems	Ejection seat Escape crew capsule
Other systems	Aircraft lavatory Auxiliary power unit Bleed air system Deicing boot Emergency oxygen system Environmental control system Flight recorder Hydraulic system Ice protection system In-flight entertainment system Landing lights Navigation light Passenger service unit Ram air turbine

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+{{Short description|Type of aileron}}
-{{Unreferenced|date=December 2009}}
+{{onesource|date=June 2024}}
-[[File:Sand land 141203-F-NI493-120.jpg|thumb|An A-10 Thunderbolt II with its [[deceleron]]s opened]]]
+[[File:An A-10 Thunderbolt II from Selfridge Air National Guard Base, Michigan, prepares to land on a public highway in Alpena, Michigan, August 5, 2021.jpg|thumb|250px|An A-10 Thunderbolt II with its decelerons opened]]
-The '''deceleron''',  or split [[aileron]], was developed in the late 1940s by [[Northrop Corporation|Northrop]] originally for use on the [[F-89 Scorpion]] fighter. It is a two-part aileron that can be deflected as a unit to provide [[Aileron roll|roll]] control, or split open to act as an [[air brake (aircraft)|air brake]]. Decelerons are also used on the [[Fairchild Republic A-10 Thunderbolt II]] and the [[Northrop B-2 Spirit]] [[flying wing]]. In differential use they impart yaw moment, potentially obviating the rudder and vertical stabilizer control surface, although requiring active flight control.
+The '''deceleron''',  or split [[aileron]], was developed in the late 1940s by [[Northrop Corporation|Northrop]], originally for use on the [[F-89 Scorpion]] fighter. It is a two-part aileron that can be deflected as a unit to provide [[Aileron roll|roll]] control, or split open to act as an [[air brake (aircraft)|air brake]]. Decelerons are used on the [[Fairchild Republic A-10 Thunderbolt II]], and in turn to a [[Stabilizer (aeronautics)|stabilizer]] the [[Northrop Grumman B-2 Spirit]] [[flying wing]].<ref>https://media.defense.gov/2021/Aug/18/2002834486/-1/-1/0/LOOKBACK_FLYING%20WINGS-PART%201_SM.PDF {{Bare URL PDF|date=August 2024}}</ref> In differential use they impart yaw moment, potentially obviating the rudder and vertical stabilizer control surface, although requiring active flight control.
 ==See also==
+* [[Index of aviation articles]]
 * [[Spoileron]]
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 {{Reflist}}
+==External links==
+*{{commonscatinline|Decelerons}}
 * [https://digital.library.unt.edu/ark:/67531/metadc65367/m1/1/ XF-89 Research Report]