Fitting Aviation Learning Center Online Nexus

A part of an inertial navigation system (INS) that accurately measures the force of acceleration in one direction.

See air data computer.

See automatic direction finder.

See attitude director indicator.

A process of cooling the air through expansion. For example, as air moves up slope it expands with the reduction of atmospheric pressure and cools as it expands.

A process of heating dry air through compression. For example, as air moves down a slope it is compressed, which results in an increase in temperature.

A stabilizer that can be adjusted in flight to trim the airplane, thereby allowing the airplane to fly hands-off at any given airspeed.

A propeller with blades whose pitch can be adjusted on the ground with the engine not running, but which cannot be adjusted in flight. Also referred to as a ground adjustable propeller. Sometimes also used to refer to constant-speed propellers that are adjustable in flight.

See aeronautical decision-making.

See automatic dependent surveillance-broadcast.