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Flaps are hinged surfaces that are usually located on the trailing edge of the wings on fixed-wing aircraft and are used for various purposes. Flaps that are located on the leading edge of the wings are known as slats and/or Krueger flaps.

Split flaps are more useful for landing, but the partially deflected hinge flaps have the advantage in takeoff. The split flap has significant drag at small deflections, whereas the hinge flap does not because airflow remains 'attached' to the flap.

Flaps and landing gear
Extending the flaps will decrease the climb performance as L/D ratio is less and the power required increased. The best rate-of-climb and angle-of-climb is always reached with flaps up.

The purpose of this manual is to advise simulator pilots of some of the ways cowl flaps and other devices are used to cool piston-powered aircraft engines.

Hinged surfaces attached to the trailing edge of a wing, either to increase manoeuvrability (as on a control line aerobatic model) or to increase lift at the expense of drag (as on most full size aircraft and some radio control aeroplanes). more......
Flaperons ...

~ Parts of the wings that can be extended to help slow the plane for landing and increase lift at low speeds. Full flaps are typically used for landing, and partial flaps may also be used for takeoff.

Each half of wing is equipped with the split flap that takes about two thirds of half span of wing. The rectangular flap consists of ribs and skin, creating cavity. The flap is hinged on the wing by means of swivel throughout its length.
Horizontal Tail Unit ...

~: Adjustable surfaces on aircraft's wing trailing edge. When lowered, flaps increase lift of wing, thereby reducing stalling speed, and increase drag, steepening aircraft's glide angle.

~ Hinged control surface located at the trailing edge of the wing inboard of the ailerons. The flaps are lowered to produce more aerodynamic lift from the wing, allowing a slower takeoff and landing speed. ~ are often found on scale models, but usually not on basic trainers.

~ Hinged surfaces on the inboard rear of wings, deployed to increase wing curvature (and thus, lift), primarily used to control angle of descent and to decrease landing touchdown speeds.

Control surfaces installed on the trailing edge of a wing and used to increase the amount of lift generated by the wing at slower speeds. ~ also have the effect of slowing an aircraft during its landing approach.

A control surface on fixed-wing aircraft, usually mounted to the fore edge of the wings, that extends the wing to provide added lift at low speeds; Compare: slats; Symbols: delta sub F; Typical Units: rad, deg,percent; ...

Hinged portions of the wing that act together to increase the lift characteristics of the wing. Most often used to allow slower landings, and shorter takeoffs. Not present in most aerobatic aircraft.

* ~ for Normal Takeoff
Extending the flaps for takeoff will improve your ability to see over the nose. This is because it increases the incidence; therefore the airplane will fly at a lower pitch attitude (for any given angle of attack).

Use ~ to help control glide slope
Configuration changes don't require power to control glide slope. Stay a little high and let the ~ bring you down.
Don't fight the airplane
If turbulence is beating you up, fighting the airplane with exaggerated control movements will make it worse.

~ up, power-on stalls were hardly more dramatic. The J230 got wobbly sooner without flaps, at around 58 knots indicated, and the nose angle was higher. But again, at stall, the front end just nodded and the right wing dropped slightly (my lack of rudder finesse).

~ are airfoils on the trailing edge of the wing. In normal flight they are at 0, and act simply as part of the wing. When extended the minimum (10 degrees) for takeoff, they increase the aircraft's lift-to-drag ratio and thus shorten the takeoff run (zero them when airborne).

~ (often confused with any of the other moveable surfaces) are used on wings to increase lift and/or increase drag as an aircraft flies progressively slower. Increased lift is usually achieved by increasing the wing area and the camber(shape) of the wing to a lesser extent.

~, Ailerons, and Flaperons
Full span ailerons, which also act as full span flaps, are thus used (called flaperons).

BLOWN FLAPS - Aerodynamic surface over which bleed air is discharged at high speed to prevent breakaway of the normal airflow.

BOUNDARY LAYER - Thin stratum of air nearest to an aircraft's external surface structure.

Split flaps, although quite effective, have fallen out of fashion and will not be discussed further [though I have re-introduced them with the ZENITH CH 2000].

Fin is the vertical part of the tail Flaps The flaps slide back and down to increase the surface of the wing area. Fuselage The body of the plane Gas Turbine Another term for engine. Gravity a force that pushes objects come down to the earth.

Anchor: Apply air brakes, flaps, ect. - Attempt to rapidly reduce speed.
Angels: Altitude in thousands of feet - "Angels 20" = 20,000'
Angle-off: Angle between the line of flight of target a/c and line of sight of an attacking a/c.
Ann: Allied code for Mitsubishi Ki. 30, IJAAF Light Bomber ...

of the upper plane they are sometimes called wing flaps.
16. Landing Wires or Ground Wires (Single).-The single wires which support the weight of the panels when landing or on the ground.
17. Flying Wires, or Load Wires (Double).

These include trim devices of various types and wing flaps.
Trim tabs are commonly used to relieve the pilot from maintaining continuous pressure on the primary controls when correcting for an unbalanced flight condition caused by changes in aerodynamic forces or weight.

April 2 - Northwest Orient Airlines Flight 2, a Boeing Stratocruiser, ditched into Puget Sound after takeoff from Seattle-Tacoma International Airport after the cowl flaps were incorrectly set for takeoff.

VSO: stalling speed at MTWA, in landing configuration with flaps and landing gear down, at sea level, ISA conditions (bottom of white arc on ASI).
VX: best angle of climb speed on all engines.
VXSE: best engine-out angle of climb speed.
VY: best rate of climb speed on all engines.

Traditional cockpit indicators of the status of landing gear, flaps, etc., show "UP" when the gear is up and locked, "DOWN" (or "DN") when it's down and locked (are you following this?), and a hash-mark indication, similar to the classic barber pole, when the gear is in transit.

Designer Itokawa turned to a sophisticated flight control technology in the form of "butterfly shaped (actually paddle shaped) air combat maneuvering flaps" that were deployed from Bowden levers atop the control stick (like the brake on a Nanchang) creating lift to overcome high load factors and ...

Takeoffs normally are done with flaps retracted. To reduce takeoff distances for short- and soft-field departures, Piper recommends that the flaps be set at 25 degrees and the nose lifted at a lower airspeed.

When one blade flaps up, the other flaps down. The entire mechanical arrangement works like a child's see-saw (teeter-totter) toy.
Coning Hinge
The light blue arrows point to the two coning hinges. These hinges allow each blade to move up and down independently of the other blade.

The description optionally includes leading-edge slats, ~ on inboard trailing-edges and trim tabs, all of which are mentioned separately, if installed. Ailerons which droop in unison with ~ (and thus are not the primary means of lowering stalling speed) are regarded as conventional.

One way to cut the speed reduction somewhat is to land without ~ or with partial ~. Recalling that the best approach speed is 1.3 times Vso, raising Vso means you can land faster and still be within acceptable parameters.

Complex aircraft: Three (3) pieces of equipment are required to allow an aircraft to be considered complex: ~, landing gear and a constant speed propeller.

To study the effect of the propeller-pitch, the above trials may be repeated at the same speeds by setting the propeller to operate at coarse and fine pitch settings. The effect of ~ can also be studied by repeating the set of trials with the ~ deflected within the permissible speeds.

aircraft in flight with landing gear, ~, slats retracted, and or without external stores
aircraft with external stores (bombs, missiles, and fuel tanks) ...

Flight configurations. Adjusting the aircraft control surfaces (including ~ and landing gear) in a manner that will achieve a specified attitude.

Whether or not Pearse flew in any acceptable sense, and regardless of the exact date, his first aircraft was a remarkable invention embodying several far-sighted concepts: a monoplane configuration, wing ~ and rear elevator, tricycle undercarriage with steerable nosewheel, ...

Among these were attempts to regain the trim, change the wing ~ position and recycle the landing gear. All my attempts to correct the problems had failed. I knew that there would be an accident. The only question was how bad of an accident would it be.

referred to as “V speeds' that tell the pilot the best glide speed, speed to achieve the best rate of climb, the stall speed, minimum controllable speed, never exceed speed, maneuvering speed, and many other. Vso lists the speed for the aircraft speed in its landing configuration (i.e., ~ ...

See also: See also: What is the meaning of Pilot, Flight, Aircraft, Landing, Speed?

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