CIERVA-WEIR W.9

En 1945 Cierva Aircraft Co. absorbió a G & J WEIR denominándose a partir de ese momento CIERVA-WEIR, pasando a tomar más impulso el desarrollo de un helicóptero ya en fase de desarrollo por Weir. Este tenia un motor Havilland Gipsy con un rotor principal tripala y en lugar de un rotor de cola, utilizaba un sistema de empuje a reacción, que expelía el aire por una abertura al final del cono de cola (tipo NOTAR) (observe en la foto el cono de cola, lado izquierdo)

This experimental design had a three-bladed rotor and torque was compensated for by a jet thrust arrangement at the end of the fuse-lage. The air from a multi-bladed fan which cooled the engine was ducted through the inside of the fuselage, heated by the exhaust gases and then ejected through an opening on the port side. Two hori-zontal shutters controlled the flow of this air. The controllable efflux was also used to impart turning movements to the rotorcraft, which had neither fin nor rudder. The multi-bladed variable-pitch fan was coupled to the rudder pedals and thus provided yawing control.

Characteristics Características	Information Información	Characteristics Características	Information Información
First Flight Primer Vuelo	1944	Engine Motor	1 Havilland Gipsy Six Serie II
Seating Capacity Plazas	1 / ?	Power Potencia	205 HP
Empty Weight Peso Vacío	Lb	Hover Ceiling O.G.E. Estacionario O.G.E	Ft
Maximum Weight Peso Máximo	Lb	Hover Ceiling I.G.E. Estacionario I.G.E	Ft
Vel. Cruise Vel. crucero	Kts	Service Ceiling Techo de Servicio	Ft
V.N.E. V.N.E	Kts	Maximum Range (Std) Alcance (Std)	NM