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2. Lift coefficient - Wikipedia

   en.wikipedia.org/wiki/Lift_coefficient

   In fluid dynamics, the lift coefficient (C L) is a dimensionless quantity that relates the lift generated by a lifting body to the fluid density around the body, the fluid velocity and an associated reference area. A lifting body is a foil or a complete foil-bearing body such as a fixed-wing aircraft.

3. Lift (force) - Wikipedia

   en.wikipedia.org/wiki/Lift_(force)

   Lift is proportional to the density of the air and approximately proportional to the square of the flow speed. Lift also depends on the size of the wing, being generally proportional to the wing's area projected in the lift direction. In calculations it is convenient to quantify lift in terms of a lift coefficient based on these factors.

4. Ground effect (aerodynamics) - Wikipedia

   en.wikipedia.org/wiki/Ground_effect_(aerodynamics)

   Suckdown is the result of entrainment of air around aircraft by lift jets when hovering. It also occurs in free air (OGE) causing loss of lift by reducing pressures on the underside of the fuselage and wings. Enhanced entrainment occurs when close to the ground giving higher lift loss. Fountain lift occurs when an aircraft has two or more lift ...

5. Load factor (aeronautics) - Wikipedia

   en.wikipedia.org/wiki/Load_factor_(aeronautics)

   In both cases the lift vector is the same (as seen by an observer on the ground), but in the latter the vertical axis of the aircraft points downwards, making the lift vector's sign negative. In turning flight the load factor is normally greater than +1. For example, in a turn with a 60° angle of bank the load factor is +2. Again, if the same ...

6. Lifting-line theory - Wikipedia

   en.wikipedia.org/wiki/Lifting-line_theory

   Lifting line theory supposes wings that are long and thin with negligible fuselage, akin to a thin bar (the eponymous "lifting line") of span 2s driven through the fluid. . From the Kutta–Joukowski theorem, the lift L(y) on a 2-dimensional segment of the wing at distance y from the fuselage is proportional to the circulation Γ(y) about the bar a

7. Helicopter height–velocity diagram - Wikipedia

   en.wikipedia.org/wiki/Helicopter_height...

   The H/V curve also contains a take-off profile, indicating how a pilot can start from 0 height and 0 speed, and safely traverse to cruise. At low heights with low airspeed, such as a hover taxi, the pilot can simply cushion the landing with collective by converting rotational inertia into lift. Conversely, a complete power loss, and resultant ...

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   mail.aol.com

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9. Elevator (aeronautics) - Wikipedia

   en.wikipedia.org/wiki/Elevator_(aeronautics)

   The elevator is a usable up and down system that controls the plane, horizontal stabilizer usually creates a downward force which balances the nose down moment created by the wing lift force, which typically applies at a point (the wing center of lift) situated aft of the airplane's center of gravity.