Robert A Whit
04-30-2013, 06:52 PM
Here we go. From Wikipedia. A discussion of flap use.
I want to move the goal posts a tad.
I don't know why some poster loves pissing matches but he does. Calls me a liar when I am telling him the truth.
I said NEVER are they used for take off.
I want to change that to say I am not aware of any airplane that needs flaps full on during take offs. I questioned AT on the claim of full flaps on take off.
This came as i say from Wikipedia.
I also posted on the now closed thread that the only time I am aware of when flaps are used for take offs is on short field take offs.
I admit the blunder when I said never. I am sure to one poster that amounts to a terrible earth shaking mistake on my part.
Flaps are hinged surfaces mounted on the trailing edges of the wings (http://en.wikipedia.org/wiki/Wing) of a fixed-wing aircraft (http://en.wikipedia.org/wiki/Fixed-wing_aircraft) to reduce the speed at which an aircraft can be safely flown and to increase the angle of descent for landing. They shorten takeoff and landing distances. Flaps do this by lowering the stall speed (http://en.wikipedia.org/wiki/Stall_(flight))and increasing the drag (http://en.wikipedia.org/wiki/Drag_(physics)).
Extending flaps increases the camber (http://en.wikipedia.org/wiki/Camber_(aerodynamics)) or curvature of the wing, raising the maximum lift coefficient (http://en.wikipedia.org/wiki/Lift_coefficient)—or the lift a wing can generate. This allows the aircraft to generate as much lift but at a lower speed, reducing the stalling speed (http://en.wikipedia.org/wiki/Stall_(flight)) of the aircraft, or the minimum speed at which the aircraft will maintain flight. Extending flaps increases drag (http://en.wikipedia.org/wiki/Drag_(physics)) which can be beneficial during approach and landing because it slows the aircraft. On some aircraft a useful side effect of flap deployment is a decrease in aircraft pitch angle which improves the pilot's view of the runway over the nose of the aircraft during landing, however the flaps may also cause pitchup, depending on the type of flap and the location of the wing.
I want to move the goal posts a tad.
I don't know why some poster loves pissing matches but he does. Calls me a liar when I am telling him the truth.
I said NEVER are they used for take off.
I want to change that to say I am not aware of any airplane that needs flaps full on during take offs. I questioned AT on the claim of full flaps on take off.
This came as i say from Wikipedia.
I also posted on the now closed thread that the only time I am aware of when flaps are used for take offs is on short field take offs.
I admit the blunder when I said never. I am sure to one poster that amounts to a terrible earth shaking mistake on my part.
Flaps are hinged surfaces mounted on the trailing edges of the wings (http://en.wikipedia.org/wiki/Wing) of a fixed-wing aircraft (http://en.wikipedia.org/wiki/Fixed-wing_aircraft) to reduce the speed at which an aircraft can be safely flown and to increase the angle of descent for landing. They shorten takeoff and landing distances. Flaps do this by lowering the stall speed (http://en.wikipedia.org/wiki/Stall_(flight))and increasing the drag (http://en.wikipedia.org/wiki/Drag_(physics)).
Extending flaps increases the camber (http://en.wikipedia.org/wiki/Camber_(aerodynamics)) or curvature of the wing, raising the maximum lift coefficient (http://en.wikipedia.org/wiki/Lift_coefficient)—or the lift a wing can generate. This allows the aircraft to generate as much lift but at a lower speed, reducing the stalling speed (http://en.wikipedia.org/wiki/Stall_(flight)) of the aircraft, or the minimum speed at which the aircraft will maintain flight. Extending flaps increases drag (http://en.wikipedia.org/wiki/Drag_(physics)) which can be beneficial during approach and landing because it slows the aircraft. On some aircraft a useful side effect of flap deployment is a decrease in aircraft pitch angle which improves the pilot's view of the runway over the nose of the aircraft during landing, however the flaps may also cause pitchup, depending on the type of flap and the location of the wing.