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Mining
Of or pertaining to the process or business of extracting materials, such as ore or minerals, from the earth's crust.
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Critical angle of attack
Aviation; Airplanes & equipment
Angle of attack which produces maximum lift without stalling.
Feather
Aviation; Airplanes & equipment
When the pitch of the propeller blades orientates them directly into the airflow, meaning they provide no thrust.
Flight level
Aviation; Airplanes & equipment
A measure of the nominal altitude of the aircraft by measuring air pressure, as opposed to height above sea level.
Flaps
Aviation; Airplanes & equipment
Movable surfaces on the rear of airplane wings to increase lift and/or increase drag as an aircraft slows.
Helicopter
Aviation; Airplanes & equipment
Rotor craft using sets of powered blades for lift and thrust.
Glidescope
Aviation; Airplanes & equipment
Radio navigation system providing data necessary for landing (e.g. lateral and vertical guidance).