lift (redirected from liftable)

lift

Upward-acting force on an aircraft wing or airfoil. An aircraft in flight experiences an upward lift force, as well as the thrust of the engine, the force of its own weight, and a drag force. The lift force arises because the speed at which the displaced air moves over the top of the airfoil (and over the top of the attached boundary layer) is greater than the speed at which it moves over the bottom and because the pressure acting on the airfoil from below is therefore greater than the pressure from above.

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lift

1. 

a. Brit a platform, compartment, or cage raised or lowered in a vertical shaft to transport persons or goods in a building

b. See chairlift ski lift

2. the force required to lift an object

3. 

a. the component of the aerodynamic forces acting on a wing, etc., at right angles to the airflow

b. the upward force exerted by the gas in a balloon, airship, etc.

4. See airlift

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lift [lift]

(fluid mechanics)

aerodynamic lift

(mechanical engineering)

elevator

(mining engineering)

The vertical height traveled by a cage in a shaft.

The distance between the first level and the surface or between any two levels.

Any of the various gangways from which coal is raised at a slope colliery.