empennage


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Related to empennage: tail assembly

empennage:

see airplaneairplane,
 aeroplane,
or aircraft,
heavier-than-air vehicle, mechanically driven and fitted with fixed wings that support it in flight through the dynamic action of the air.
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Empennage

 

aerodynamic surfaces of an aircraft that provide longitudinal and directional stability of the aircraft and control its flight. The control surfaces are usually located in the tail part of the fuselage, and less frequently in the nose part. The design of the empennage is similar to that of an aircraft wing; its total surface is 0.25–0.50 of the wing surface. The various types of empennage are distinguished by their front view, side view, and plan view (rectangular, tapered, elliptical, and, for highspeed aircraft, swept-back). The front part of the horizontal empennage, which carries the elevators, is called the stabilizer. The front part of the vertical empennage, which carries the rudder, is called the fin vertical stabilizer.

The elevator is moved by the pilot using the control stick (pulling the stick toward the pilot causes the aircraft to climb; pushing the stick away from the pilot causes the aircraft to descend). The rudder is operated by foot pedals (pressure on the right pedal makes the aircraft turn to the right; pressure on the left pedal results in a left turn). The angles of deflection of the elevator and rudder are usually ±25°–30°. To maintain proper longitudinal stability of the aircraft, the stabilizer is usually equipped with trim tabs, which can be operated by the pilot to adjust the angle of attack within a range of +5° to — 15°. The trimming mechanism is sometimes connected to the control stick, thus causing the stabilizer to operate together with the elevator. The elevator and rudder are often omitted entirely, and the horizontal and vertical empennage are of the all-moving type. In addition, transverse stability of the aircraft (normally provided by the ailerons) can be improved by connecting the right and left halves of the horizontal empennage with the aileron control, thus enabling the elevators to deflect in opposite directions (differential control). The same scheme is used in operating the rudders and the elevators of V-shaped empennage.

S. IA. MAKAROV

empennage

[¦am·pə¦näzh]
(aerospace engineering)
The assembly at the rear of an aircraft; it comprises the horizontal and vertical stabilizers. Also known as tail assembly.

empennage

empennage
The rear portion, or complete tail unit, of an airplane. The empennage stabilizes the airplane in flight and causes it to rotate about its vertical and lateral axes.
References in periodicals archive ?
Empennage assemblies produced by TLMAL include the aircraftaACAOs horizontal and vertical stabilizers along with leading edges and tip assemblies.
Strata already manufactures empennage ribs for the 777 and vertical fin ribs for the 787 Dreamliner.
The typical aircraft characteristic components include fuselage, wing, and empennage, which are introduced as follows.
The purpose of current work is to determine the diagrams of damping and frequency versus flight speed for the empennage vibration modes of the sailplane LAK-17B.
The new livery consists of an all-metallic silver fuselage and a dark blue empennage with SkyTeam's logo on it as well as MEA's logo next to the cockpit door.
the Airframe Cumulative Fatigue Monitoring System - FAA 1994), as well as calculating the structural fatigue in GA aircraft structures (wing, fuselage, empennage, landing gear) through a probabilistic safe life approach (Ocampo, Millwater 2010; Ocampo et al.
Al Olama said Strata has now being supplying vertical fin and the supply of two other parts of empennage such as Rudder and Horizontal Stabilisers for the ATR aircraft are scheduled to coming in production shortly.
The wings and empennage are done, the fuselage is ready to go onto its gear and the engine has been shipped.
In Boeing's first direct composites supplier contract in the Arab world, Strata will manufacture empennage ribs for the 777 and vertical fin ribs for the 787 Dreamliner.
Since its aerospace unit was established in 2006, no international company has been of greater interest to the world's aviation industry than Strata, a composite wing and empennage (tail section) aerostructures manufacturer.
Decorated with a silver grey fuselage, the aircraft featured ribbon type SkyTeam logo on a dark blue empennage while the front sides of the fuselage are printed with SkyTeam and China Southern Airline's logo.
Additionally, the industrial plan covers a substantial collaboration between PT DI and Airbus Military for the C295 programme, including the manufacturing of the tail empennage, rear fuselage and fuselage panels, as well as workpackages for the development of Computer Based Training systems and the creation of a service and delivery centre and a final assembly line (FAL) in Indonesia.