it depends on what type of aircraft your flying, the runway length, and the weather. here are two common aircraft flap settings for standard takeoff use: Boeing 737: set flaps to 5 Cessna 172: set flaps to 10 these are two common flap settings for the Boeing 737 and cessna 172. remember, different aircraft have differnet flap settings based on weather and runway length.
Flaps generally change the geometry of the wing for landing and take off speeds
No. On MOST airplanes, ailerons are separate from flaps. Ailerons are used to help steer the airplane, while flaps are lowered to change the aerodynamic shape of the wing to provide more lift during take off and landing.
That is not common. Flaps are generally used to take-off and land.
It allows it to take off and land
The flaps, when extended, basically make the wing bigger which generates more lift. during takeoff, it helps to have as much lift as possible to aid the aircraft in it's ascent into the air. during taxiing, there is no real benefit to having the flaps out. the reason the flaps are extended during taxiing is to save time. if the flaps are extended while the plane is taxiing, it doesent have to do it later before it takes off.
Yes, it IS possible for most airplanes to take off without using flaps, but it is usually not done because airplane would need a longer runway or more speed before the wings could create enough lift to get off the ground.
You didn't specify what context you wanted. The term can be a noun or a verb and can mean several different things.The flag flaps in the breeze.The airplane's flaps were down.
10 or 20 for take off 25 or 30 for landing
Well, i dont actually know, however, here's a flying tip; Before you take off, set your flaps to full, then, when your ready, power up. With the help of the flaps, you can lift off 20-30 knots before the normal take off speed. eg; the take off speed of a 747 is 180 knots, you can take off @ around 155 knots.....ORSOME!!!!! PS: With the embraer you can download, (190LR) if you do the ubove step, the plane lifts off on it's own!!!!! (Be sure to retract flaps as soon as your airborne)
Yes a head wind and flaps set to mid for wing configuration
Flaps add more curvature to the wings and therefore add lots of lift, useful when the aircraft is flying slowly to land, or accelarating to take off.
Flaps increase the aerodynamic lift of a wing by increasing it's surface area. This allows the airplane to generate a greater amount of lift at slower speeds. In other words, when the flaps are extended, the airplane doesn't have to go as fast in order to take off or land. The flaps are retracted once the airplane is off the ground and has increased its speed to a point where the extra lift from the flaps is no longer needed. Flaps also have the effect of increasing drag on the airplane wing which reduces the airplane's speed and efficiency, but this only affects the aircraft when operating at higher speeds.