Tail unit

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The term tail unit describes a series of technical aids with which liquid or gaseous media can be influenced.

Turbines

Tail unit of a steam turbine

The term " tail unit " describes a fixed radial grid of blades used in turbines and compressors , which either add a twist to the flowing medium (turbine) or remove it (compressor), also known as a guide wheel , diffuser or guide grille .

Aircraft construction

different tail configurations
Avro RJ-85 with T-tail
Robin ATL L with V-tail
Roof tail on a Lo-120
Tail unit of an Airbus A380

The term tail unit refers to the components required for control in aircraft , such as the horizontal tail unit , the rudder unit or the ailerons . In general, the elevator and rudder units consist of a fixed fin to which the movable rudders are attached with hinges. If elevators or vertical stabilizers are used with the entire surface - without fin - for control, these designs are referred to as pendulum rudders . If the elevator is above the rudder, it is called a T-tail , if it is in front of the wings, it is called a canard .

If two inclined control surfaces take over the function of elevator and rudder unit, it is a butterfly tail unit or V-tail unit , for example:

If the control surfaces of a V-tail are turned around, one speaks of a roof tail. The arrangement of the horizontal and vertical stabilizers on the fuselage is different due to aerodynamic or operational requirements.

Waters

In rivers , the term `` tail unit '' refers to longitudinal structures, in particular guide dams , which ensure the necessary water depth even at low tide by limiting the river bed . (See also: river engineering )

See also

literature

Web links