An aerofoil is a body shaped to produce an aerodynamic reaction (lift) perpendicular to its direction of motion, for a small resistance (drag) force in that plane. It achieves this by accelerating the flow passing over it, and decelerating the flow passing under it. This change in velocity causes a change in pressure, which in turn generates lift.

A straight line conecting the leading edge with the trailing edge of an aerofoil.

The distance from the datum to the point at which the weight of a component acts.

35 ft

For Reference:

• 50ft for Class B or A (<15° AoB at take-off or normal landings)

• 35ft for Class A (dry take-off or steep approach)

• 15ft for Class A (wet take-off)

A precision approach uses both lateral (from left to right) and vertical guidance. A non-precision approach only uses lateral guidance.

The glide range is not affected by the weight. Howver Vmd is. The heavier the aircraft, the higher the Vmd.

Airplanes can get uncontrollable during windshear.

With the IRS/INS/GPS or visually.

For a commerical aeroplane: During take off. At this point the aircraft has it it's maximum weight, and accelerating in the vertical plane requiring the highest ammount of lift to counteract the weight.

The point during a flight at which an aircraft is no longer capable of returning to the airfield from which it took off due to fuel considerations.

Beyond this point the aircraft must proceed to some other destination.