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Encyclopedia > Aileron

Updated 546 days 1 hour 49 minutes ago.

For the band with a similar name, see The Ailerons The Ailerons are an indie rock band featuring Charity Hair, Dan Beattle, Dave Rowntree (notably drummer of English band Blur and Mike Smith. ...

Ailerons are hinged control surfaces attached to the trailing edge of the wing of a fixed-wing aircraft. They are used to control the aircraft in roll. The two ailerons are interconnected so that one goes down when the other goes up: the downgoing aileron increases the lift on its wing while the upgoing aileron reduces the lift on the other wing, producing a rolling moment about the aircraft's longitudinal axis. The word aileron is French for "little wing." Image File history File links Aileron_roll. ... This page is a candidate for speedy deletion. ... A Laughing Gull on the beach in Atlantic City. ... An Air France Boeing 777, a modern passenger jet. ... Flight dynamics is the study of orientation of air and space vehicles and how to control the critical flight parameters, typically named pitch, roll and yaw. ... Lift consists of the sum of all the fluid dynamic forces on a body perpendicular to the direction of the external flow approaching that body. ... In physics, the moment of force (often just moment, though there are other quantities of that name such as moment of inertia) is a quantity that represents the magnitude of force applied to a rotational system at a distance from the axis of rotation. ... The term, longitudinal means front-to-back or top-to-bottom as opposed to transverse which means side-to-side. In automotive engineering, the term, longitudinal refers to an engine in which the crankshaft is oriented along the long axis of the vehicle, front to back. ...


An unwanted side-effect of aileron operation is adverse yaw — a yawing moment in the opposite direction to the turn generated by the ailerons. In other words, using the ailerons to roll an aircraft to the right would produce a yawing motion to the left. It is caused by an increase in induced drag due to the greater effective camber of the wing with a downward-deflected aileron, and the opposite effect on the other wing. Modern aileron systems have minimal adverse yaw, such that it is barely noticeable in most turns. This may be accomplished by the use of differential ailerons, which have been rigged such that the downgoing aileron deflects less than the upward-moving one. Frise ailerons achieve the same effect by protruding beneath the wing of an upward deflected aileron, increasing drag on that side. Ailerons may also use a combination of these methods. Adverse yaw (or aileron drag) is a secondary effect of the application of the ailerons in aircraft. ... Flight dynamics is the study of orientation of air and space vehicles and how to control the critical flight parameters, typically named pitch, roll and yaw. ... In aerodynamics, lift-induced drag, or more simply, induced drag, is a drag force arising from the generation of lift by wings or a lifting body during flight. ... The camber in aerospace engineering is the asymmetry between the top and the bottom curves of an airfoil. ...


Adverse yaw is also caused by the wing on the outside of the turn traveling faster than the inside wing and thus having more lift and drag. Once the desired angle of bank (degree of rotation on the longitudinal axis) is obtained, the pilot uses opposite aileron to prevent the aircraft from continuing to roll due to this increased lift. This minor opposite use of the control must be maintained throughout the turn. The pilot also uses a slight amount of rudder in the same direction as the turn to counteract adverse yaw and to produce a "coordinated" turn where the fuselage is parallel to the flight path. A simple gauge on the instrument panel called the inclinometer, also known as "the ball", indicates when this coordination is achieved. The worlds oldest depiction of a rudder. ... The fuselage can be short, and seemingly unaerodynamic, as in this Christen Eagle 2 The fuselage (from the French fuselé spindle-shaped) is an aircrafts main body section that holds crew and passengers or cargo. ...

Ailerons are the trailing-edge control surface nearest the wing tip (although on some airliners they can also be found at the wing root). On this parked Piper Cherokee the aileron has deflected downwards.
Ailerons are the trailing-edge control surface nearest the wing tip (although on some airliners they can also be found at the wing root). On this parked Piper Cherokee the aileron has deflected downwards.

Modern airliners tend to have a second set of inboard ailerons much closer to the fuselage[citations needed], which are used at high speeds. If the wings are also in a V shape and the aircraft enters a stall, the ailerons on the inside will still be able to function as the stall will proceed from the tips of the wings to the body. In plane wings, the stall develops the other way so the ailerons are placed towards the tips of the wings. Large jet aircraft often have ailerons towards the tips of the wings to increase the moment of the aircraft so less force is required to roll the aircraft. Some aircraft use spoilers to achieve the same effect as ailerons. Image File history File linksMetadata Download high-resolution version (1360x950, 898 KB) Piper Cherokee PA-28-140 (UK registration G-BCGJ) at Kemble Airfield, Gloucestershire, England. ... Image File history File linksMetadata Download high-resolution version (1360x950, 898 KB) Piper Cherokee PA-28-140 (UK registration G-BCGJ) at Kemble Airfield, Gloucestershire, England. ... For other uses, see stall A stall is the slowing or stopping of a process. ... This KLM cityhopper Fokker 70 still has its spoilers/airbrakes deployed (the cream-coloured panels projecting above the top surface of the wing) after landing at Bristol International Airport, England. ...


Although the device first appeared on a monoplane, built by New Zealand inventor Richard Pearse in 1902, the first aircraft that flew using an aileron was 14 Bis by Santos Dumont. Richard Pearse For the film director, see Richard Pearce. ... (Redirected from 14 Bis) Santos-Dumont in his trademark Panama hat. ... Santos-Dumont in his trademark Panama hat. ...


It was later developed independently by the Aerial Experiment Association, headed by Alexander Graham Bell, and by Robert Esnault-Pelterie, a French aircraft builder. Ailerons superseded the earlier wing warping technique, developed by the Wright Brothers. The Aerial Experiment Association (AEA) was formed in 1907 under the tutelage of Dr. Alexander Graham Bell. ... Alexander Graham Bell (1847-1922) Alexander Graham Bell (March 3, 1847 – August 2, 1922) was a Scottish scientist and inventor who emigrated to Canada. ... Robert Albert Charles Esnault-Pelterie (November 8, 1881–December 6, 1957) was a pioneering French aircraft designer and spaceflight theorist. ... Wing warping was an early system for controling the roll of an aeroplane while flying. ... The Wright brothers, Orville Wright (August 19, 1871–January 30, 1948) and Wilbur Wright (April 16, 1867–May 30, 1912), are American brothers generally credited with making the first controlled, powered, heavier-than-air human flight on December 17, 1903. ...


Another control surface that combines an aileron and flap is called a flaperon. A single surface on each wing serves both purposes: used as an aileron, the flaperons left and right are actuated differentially; when used as a flap, both flaperons are actuated downwards. As an example of an aircraft using flaperons, see this RJ.03 IBIS experimental aircraft. Please note that when a flaperon is actuated downwards (i.e. used as a flap) there is enough freedom of movement left to be able to still use the aileron function. Flaps are hinged surfaces on the trailing edge of an airplane wing which, when deployed, increase the lift (and drag) of a wing by changing the camber of the airfoil. ... A flaperon is a type of control surface that combines aspects of both flaps and ailerons. ...


[edit] See also

Aircraft flight controls allow a pilot to adjust and control the aircrafts flight attitude. ... This page is a candidate for speedy deletion. ...

[edit] External links


  Results from FactBites:
 
Flight Control Surfaces (756 words)
Ailerons: The two ailerons, one at the outer trailing edge of each wing, are movable surfaces that control movement about the longitudinal axis.
Thus, the effect of moving either aileron is aided by the simultaneous and opposite movement of the aileron on the other wing.
Rudder and aileron trim tabs operate on the same principle as the elevator trim tab to relieve pressure on the rudder pedals and sideward pressure on the control wheel, respectively.
aileron: Definition and Much More from Answers.com (1219 words)
Ailerons are located as close as possible to the wing tips, to maximize rolling moment by increasing the moment arm of the force due to the change in wing lift.
The two ailerons are interconnected so that one goes down when the other goes up: the downgoing aileron increases the lift on its wing while the upgoing aileron reduces the lift on the other wing, producing a rolling moment about the aircraft's longitudinal axis.
An unwanted side-effect of aileron operation is adverse yaw — a yawing moment in the opposite direction to the turn generated by the ailerons.
  More results at FactBites »

 

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