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Dynamic lift

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While it is mostly convenient to deal with aerodynamic lift, there are occasions when it is best to make use of a different resolution of the aerodynamic force in which it is broken down into normal force and axial force instead of lift and drag.


Aerodynamic lift is the most common, with aeroplanes being kept in the air by the forward movement of wings, and rotorcraft by spinning wing-shaped rotors sometimes called rotary wings. A wing is a flat, horizontal surface, usually shaped in cross-section as an aerofoil.

The aerodynamic Lift and Drag are computed by the program and displayed in ounces or gram-weights. The Tension in the line is displayed in ounces or grams. This is computed based on the forces on the kite and the weight of the line.

Nothing in life is free and this is especially true of aerodynamic lift. Increase lift and you increase drag. That’s nothing more than an ugly fact of life that we have to deal with.

Flaps 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. Flaps are often found on scale models, but usually not on basic trainers.

On a tail leading-edge it may be fixed, leaving a narrow slot. On a wing it is almost always retractable, normally flush with the wing profile but extended (under power or by aerodynamic lift) to leave a narrow slot for take-off, low-speed loiter or landing.

See also: See also: What is the meaning of Dynamic, Flight, Lift, Drag, Force?

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