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A view of the EC120B's tailboom and Fenestron anti-torque tail fan. A Fenestron (sometimes alternatively referred to as a fantail or a "fan-in-fin" arrangement [1]) is an enclosed helicopter tail rotor that operates like a ducted fan.
The EC130 is a single-engine helicopter. It uses a three-bladed Starflex main rotor which is matched to an enclosed tail fan anti-torque device, known as a Fenestron, the latter feature replacing the traditional tail rotor found on the older AS350. The Fenestron has unevenly spaced blades to reduce noise generation by 50% compared to a ...
The tail rotor is a smaller rotor mounted so that it rotates vertically or near-vertically at the end of the tail of a traditional single-rotor helicopter. The tail rotor's position and distance from the center of gravity allow it to develop thrust in a direction opposite that of the main rotor's rotation, thereby countering the torque effect ...
The R44 is a single-engined helicopter with a semi-rigid two-bladed main rotor, a two-bladed tail rotor and a skid landing gear. It has an enclosed cabin with two rows of side-by-side seating for a pilot and three passengers. Tail rotor direction of rotation on the R44 is reversed compared to the R22 for improved yaw control authority.
The OH-1 is powered by a pair of Mitsubishi TS1 turboshaft engines, equipped with Full Authority Digital Engine Controls (FADEC), which drives a four-blade composite main rotor with a bearingless rotor hub along with a Fenestron-type anti-torque tail rotor (an enclosed tail-fan unit). The Fenestron uses eight asymmetrically spaced blades to ...
The A600 features a single main rotor, a two-seats in side-by-side configuration enclosed cockpit with a windshield, skid-type landing gear and a turbocharged four-stroke, 147 hp (110 kW) RotorWay RI 600S engine that drives the 25 ft (7.6 m) diameter two-bladed rotor and conventional 50.25 in (127.6 cm) diameter two-bladed tail rotor. The ...
The first prototype SA 340 flew for the first time on 7 April 1967, it initially flew with a conventional tail rotor taken from the Alouette II. The tail was replaced in early 1968 with the distinctive fenestron tail on the second prototype. [2] [5] Four SA 341 prototypes were flown, including one for British firm Westland Helicopters.
The R22 is a light, two-place, single reciprocating-engined helicopter, with a semirigid, two-bladed main rotor and a two-bladed tail rotor. The main rotor has a teetering hinge and two coning hinges. The tail rotor has only a teetering hinge. The normal production variant has skid landing gear.