Aeronautics

Aeronautics

The branch of science that deals with flight aerodynamics and with the operation of all types of aircraft.

Industry: Aviation

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Aeronautics

Trigger pulse

Aviation; Aeronautics

A pulse of electrical energy used to initiate an operation in certain types of electronic equipment.

A rate gyro flight instrument that gives the pilot an indication of the rate of rotation of the aircraft about its vertical axis. The turn and slip indicator shows the trim condition of the aircraft ...

Turn coordinator

Aviation; Aeronautics

A rate gyro instrument that shows at a glance when a standard-rate turn is being made. The dial has a symbol which represents the rear of an airplane with marks that align with its wing tip when a ...

Gyroscope

Aviation; Aeronautics

A rapidly spinning wheel with its weight concentrated about its rim. Gyroscopes have two basic characteristics that make them useful: rigidity in space and precession. Because of its rigidity in ...

Extended-range twin operations (ETOPS)

Aviation; Aeronautics

A rating accompanied by a time limit, such as 180-minute ETOPS, that allows twin-engine civil transport aircraft to fly over oceans and deserts provided it is never more than 180 minutes away from a ...

Gyroscopic turn indicator

Aviation; Aeronautics

A rate-type flight instrument used to show the pilot the rate at which the aircraft is rotating about its vertical axis. Both turn and slip indicators and turn coordinators are gyroscopic turn ...

Protactinium

Aviation; Aeronautics

A rare, radioactive chemical element in the actinide group. Protactinium's symbol is Pa, and its atomic number is 91. The most common isotope of protactinium, Pa 231, has a half-life of more than ...