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CIERVA
- WEIR
CIERVA
W.11 |
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Helicóptero monomotor de 24 plazas, voló por primera vez el 7 de diciembre de 1948, siendo en ese momento el helicóptero más grande del mundo. El motor movía tres grandes rotores tripalas, estando previsto también la utilización como ambulancia, grúa y fumigador. Con una carga útil de 3048 Kg de insecticidas, se construyeron dos prototipos, pero el primero tuvo un accidente matando a los tres miembros de la tripulación y el segundo no llegó a volar nunca. La designación W.11T fue asignada para un proyecto con dos motores Rolls-Royce Merlin 502 de 1620 hp. El W.12 fue otro proyecto con motores turbohélice Rolls-Royce Dart pero no llego a concretarse hasta la época que se comenzó el estudio sobre el W.14, que se convertiría finalmente en el SKEETER (ver Westland). |
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In this helicopter, power from a single engine was
transmitted through shafting to three-bladed rotors mounted on
outriggers, each at the tip of a triangle. All three turned in the same
direction, but their plane of rotation was sufficiently tilted to
compensate for torque. Each rotor hub had a control spider which ensured
cyclic and collective pitch control. The engine with its distribution
gearbox to drive the rotors was situated just behind the cockpit in the
fuselage. The fuselage was designed to carry twenty-four passengers in a
compartment measuring 5.79 x 2.31 x 1.77 metres.There was a tricycle landing gear, each leg of which
was fitted with an oleo-pneumatic shock absorber. The prototype, the largest in the world at that date, made its maiden flight in December 1948, but shortly after being displayed at the Farnborough Show it crashed, and work did not start on it again until the Gierva Company, as previously stated, was taken over by Saunders Roe. P.Lambermont "Helicopters and Autogyros of the World", 1958 |
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Characteristics |
Information |
Characteristics |
Information |
First
Flight Primer Vuelo |
1948 | Engine Motor |
1
Rolls-Roice |
Seating
Capacity Plazas |
3 / 24 |
Power Potencia |
1620 HP |
Empty
Weight Peso Vacío |
5507 Kg |
Hover
Ceiling O.G.E. Estacionario O.G.E |
Ft |
Maximum
Weight Peso Máximo |
7938 Kg |
Hover
Ceiling I.G.E. Estacionario I.G.E |
Ft |
Vel.
Cruise Vel. crucero |
85 Kts |
Service
Ceiling Techo de Servicio |
Ft |
V.N.E. V.N.E |
121 Kts |
Maximum
Range (Std) Alcance (Std) |
285 NM |
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