FOCKE-ACHGELIS FA-269

El Focke Achgelis 269 "convertiplane" fue diseñado en 1943, despues de que se consideraba tener bastante experiencia en el campo de los helicópteros. El propósito del "convertiplane" era combinar el aterrizaje y despegue vertical con la velocidad de un avión. El Fa 269 tenía una configuración de ala media con un motor (Daimler Benz 601 ó 605) en cada una de ellas, con unas hélices bastante grandes. Este proyecto fue abandonado en 1944 debido al considerable desarrollo que debían realizar para construir las cajas de transmisión, el mecanismo de pivoteo, etc. No se construyó ningún prototipo.

The Focke Achgelis 269 "convertiplane" was designed in 1943, after it was considered that enough experience had been gained in the helicopter field. The purpose of the "convertiplane" was to combine the vertical landing and takeoff characteristics of the helicopter with the much higher cruising speed and fuel economy of the airplane. The FA 269 was of a mid-wing configuration, with a slight sweepback of the leading edge and a compound taper on the trailing wing. Each wing had an engine (either a Daimler Benz 601 or 605) mounted beyond midspan that drove a very large span pusher propeller. In level flight these propellers were in a normal rear-facing position, but for takeoff and landing the propellers could pivot downward through about an 85 degree arc.

There was a special pivoting gearbox at the front of each engine, from which a drive shaft passed back between the engine cylinder banks to drive its propeller behind the wing trailing edge. In the completely down position, the propellers were almost parallel to the ground. A very long tailwheel undercarriage was thus necessitated, which retracted into the fuselage. A crew of two sat in a stepped cockpit located in the extreme nose, with the underside being extensively glazed also. This project was abandoned in 1944 due to the considerable development that would have been needed for the special gearboxes, drives, pivoting mechanisms and the propeller pitch control systems for use in landings and takeoffs.

German Aircraft of the Second World War, by Smith & Kay

Characteristics Características	Information Información	Characteristics Características	Information Información
First Flight Primer Vuelo	1943 Project	Engine Motor	2 Daimler-Benz DB 601
Seating Capacity Plazas	1 / ?	Power Potencia	HP
Empty Weight Peso Vacío	Lb	Hover Ceiling O.G.E. Estacionario O.G.E	Ft
Maximum Weight Peso Máximo	4410 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	375 Kts	Maximum Range (Std) Alcance (Std)	NM
Dimensions / Dimensiones
Total Length Largo Total	32,8 Ft 10,0 m	Main Rotor Diameter Diam. Rotor Principal	NA
Total Height Alto Total	29,19 Ft 8,90 m	Tail Rotor Diameter Diam. Rotor de Cola	NA