[permalink] [id link]
The down-moving aileron also adds energy to the boundary layer by the airflow from the under-side of the wing that scoops air by the edge of the aileron that follows the upper surface of the aileron and creates a lifting force on the upper surface of the aileron aiding the lift of the wing.
from
Wikipedia
Some Related Sentences
aileron and also
An upper surface spoiler which also acts to reduce lift ( equivalent to deflecting an aileron upwards ), so causing the aircraft to bank in the direction of the turn-the angle of roll causes the wing lift to act in the direction of turn, reducing the amount of drag required to turn the aircraft's longitudinal axis.
In practice, both aileron and rudder control input are used together to turn an aircraft, the ailerons imparting roll, the rudder imparting yaw, and also compensating for a phenomenon called adverse yaw.
The sideslip also uses opposite aileron and rudder.
They may also, depending on cuff location, improve aileron control at low speed.
Many airplanes also have rudder and / or aileron trim systems.
The wings also incorporate washout, retaining aileron effectiveness at or just prior to the stall.
Small fixed-pitch helicopters need a 4-channel radio ( throttle, elevator, aileron, rudder ), although micro helicopters that utilize a 2-channel infrared control system also exist ; while collective-pitch models need a minimum of 5 channels with 6 being most common ( throttle, collective pitch, elevator, aileron, rudder and gyro gain ).
This allows full aileron control despite loss of lift, and also means that drag-inducing leading edge slots or other devices are not required.
aileron and adds
If the leading edge of the aileron is sharp or bluntly rounded, that adds significant drag to that wing and help the aircraft to yaw ( turn ) in the desired direction, but adds some unpleasant or potentially dangerous aerodynamic vibration ( flutter ).
aileron and by
Frise ailerons accentuate this profile drag imbalance by protruding beneath the wing of an upward-deflected aileron, most often by being hinged slightly behind the leading edge and near the bottom of the surface, with the lower section of the leading edge protruding slightly below the wing's undersurface when the aileron is deflected upwards, substantially increasing profile drag on that side.
Spades are flat metal plates, usually attached to the aileron lower surface, ahead of the aileron hinge, by a lever arm.
They reduce the force needed by the pilot to deflect the aileron and are often seen on aerobatic aircraft.
Used during the First World War and before, these ailerons were each controlled by a single cable, which pulled the aileron up.
Likewise, the flexing caused by the low torsional stiffness of the Supermarine Spitfire's wings caused them, in turn, to counteract aileron control inputs, leading to a condition known as control reversal.
Due to the unusually high speeds at which the Supermarine Spitfire could dive, this problem of aileron reversal became apparent when it was wished to increase the lateral maneuverability ( rate of roll ) by increasing the aileron area.
The aircraft had a wing designed originally for an aileron reversal airspeed of 580 mph, and any attempt to increase the aileron area would have resulted in the wing twisting when the larger ailerons were applied at high speed, the aircraft then rolling in the opposite direction to that intended by the pilot.
Haynes, having just shut off the fuel supply to the malfunctioning engine, looked at Records and was surprised by what he saw: Records had the control column turned all the way to the left, commanding maximum left aileron, and pulled all the way back, commanding maximum up elevator.
An aircraft with elevons is controlled as though the pilot still has separate aileron and elevator surfaces at his disposal, controlled by the yoke or stick.
Inexperienced pilots will often enter slips unintentionally during turns by failing to coordinate the aircraft using the rudder ; however there are common situations where a pilot may enter a slip deliberately by using opposite rudder and aileron inputs, most commonly in a landing approach at low power.
aileron and airflow
When the aileron is deflected up ( to make its wing go down ), the leading edge of the aileron dips into the airflow beneath the wing.
aileron and from
Once the desired angle of bank ( degree of rotation on the longitudinal axis ) is obtained, the pilot uses opposite aileron to prevent the angle of bank from increasing due to this variation in lift across the wing span.
These balance weights are tear drop shaped ( to reduce drag ), which make them appear quite different from spades, although both project forward and below the aileron.
His plane went into an uncontrollable aileron roll while he was flying from Cape Canaveral to Mobile, Alabama, en route to see his father who was dying of cancer.
aileron and wing
The two ailerons are typically interconnected so that one goes down when the other goes up: the down-going aileron increases the lift on its wing while the up-going aileron reduces the lift on its wing, producing a rolling moment about the aircraft's longitudinal axis.
The word aileron is French for " little wing ".
The Wright Brothers used wing warping instead of ailerons for roll control, and initially, their aircraft had much better control in the air than aircraft that used movable surfaces ; however, as aileron designs were refined, and aircraft became larger and heavier, it became clear that they were much more effective and practical for most aircraft.
This helps reduce the likelihood of a wing tip stall when aileron deflections are made at high angles of attack.
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 a wing stalls, aileron effectiveness is reduced, making the plane hard to control and increasing the risk of a spin starting.
aileron and air
Because air no longer flows smoothly over the wings during a stall, aileron control of roll becomes less effective, whilst simultaneously the tendency for the ailerons to generate adverse yaw increases.
aileron and edge
Trim tabs are small movable sections resembling scaled down ailerons located at or near the trailing edge of the aileron.
aileron and surface
The Frise aileron is pivoted at about its 25 to 30 % chord line and near its bottom surface.
* A control surface that combines an aileron and flap is called a flaperon.
The rudder remains the most efficient flight surface and the adverse effect of yaw which alters pitch is useful for altering the direction of the aircraft without the need for aileron inputs.
aileron and creates
The yaw motion is induced through the use of ailerons alone due to aileron drag, wherein the lifting wing ( aileron down ) is doing more work than the descending wing ( aileron up ) and therefore creates more drag, forcing the lifting wing back, yawing the aircraft toward it.
aileron and force
As the aileron is deflected upward, the spade produces a downward aerodynamic force, which tends to rotate the whole assembly so as to further deflect the aileron upward.
The size of the spade ( and its lever arm ) determine how much force the pilot needs to apply to deflect the aileron.
aileron and on
Henry Farman's ailerons on the Farman III were the first to resemble ailerons on modern aircraft, and have a reasonable claim as the ancestor of the modern aileron.
Another contestant includes Dr. William Whitney Christmas of the U. S., who claimed ( among other things ) to have invented the aileron in the 1914 patent for what would become the Christmas Bullet, which was built in 1918 but which proved uncontrollable with both examples built crashing on their first flight.
This type of aileron was used on the Short 166.
The Symphony SA-160 was designed with two unusual vortex generators on its wing to ensure aileron effectiveness through the stall
The throttle is usually a conventional carburetor as used on radio control models Schemes that couple limited rudder and / or aileron, and variable leadout position are often found on carrier planes as well as elevator and flaps /
A raised aileron reduces lift on that wing and a lowered one increases lift, so moving the stick left causes the left wing to drop and the right wing to rise.
When the stick is moved left to roll the aircraft to the left, the right aileron is lowered which increases lift on the right wing and therefore increases induced drag on the right wing.
These devices function primarily as ailerons, but on some aircraft, will " droop " when the flaps are deployed, thus acting as both a flap and a roll-control inboard aileron.
On most airliners, spoiler panels on the wings mix with aileron inputs to enhance roll control.
0.341 seconds.