fin

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fin

(fĭn)
n.
A membranous appendage extending from the body of a fish or other aquatic animal, used for propelling, steering, or balancing the body in the water.

fin

a flattened limb found in aquatic animals, and used for locomotion.
References in periodicals archive ?
Due to the loss of the vertical stabilizer, the vertical tail area, volume, and efficiency factor will all be zero; therefore, [mathematical expression not reproducible].
The NTSB determined the vertical stabilizer failed, in part, after loads beyond its ultimate design were created by the first officer's rudder input, even though the airplane was well below its maneuvering speed ([V.sub.A]) at the time.
The pioneering shuttle had surface abrasions and lost a chunk of its vertical stabilizer fin in the storm.
The aircraft is equipped with two "dogleg" HF antennas that connect to the aircraft at the top of the vertical stabilizer, the outer edge of the horizontal stabilizer, and the empennage.
Initial investigation showed a distinct line from the damaged area and the surface directly aft of the area in question, suggesting that a leading-edge tip cap had blown off the vertical stabilizer. We shut down the aircraft and placed it in a down status.
The NTSB found that while wake turbulence alone did not cause the crash, the first officer's reactions to the two encounters caused the vertical stabilizer to be exposed to loads far exceeding those certified for the aircraft.
His starboard wing tore off the parked plane's vertical stabilizer, while his starboard gear dragged through the aft part of the fuselage.
Pilots have expressed concern about the A300-600's rudder performance and about the composite structure of the tail-fin, or vertical stabilizer.
Union of the different aircraft fuselage sections has started and the vertical stabilizer (tail fin) has been joint.
The second one included the vertical stabilizer (found in the top of a tree), the rudder balance weight, the left horizontal stabilizer, the left elevator, the left wingtip, the left elevator balance weight and the cockpit canopy.
This stand is huge and was designed to allow access to any part of the C-40's fuselage and vertical stabilizer that tower 41 feet 2 inches above the ground.