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The Focke-Achgelis Fa 269 was a tiltrotor VTOL aircraft project designed by Henrich Focke.

Focke-Achgelis Fa 269
model shown
Role VTOL aircraft project
Manufacturer Focke-Achgelis
Designer Heinrich Focke
First flight none
Primary user none
Number built 0

Development


Conceived as a single-seat fighter, the Fa 269 project resulted from a design study order issued by the Reich Air Ministry to Focke-Achgelis in 1941. The order called for a local defence fighter which would combine the VTOL capabilities of a helicopter with the speed and economy of a conventional fixed-wing aircraft.

A large amount of wind tunnel testing was undertaken, along with work on gearboxes, drives and power-pivoting mechanisms, and a full-scale mock-up of the aircraft was built to demonstrate the VTOL concept, but much of this was destroyed by Allied bombing raids and all work was shelved in 1944,[1] when Focke-Achgelis estimated that there was little likelihood of a practical prototype being available before 1947.


Design


A mid-wing monoplane, the Fa 269 was to have been powered by a single BMW 801 air-cooled radial engine buried in the fuselage behind the cockpit, which was to have driven transverse drive shafts in the leading edges of the fixed wing, the shafts turning three-bladed rotors via synchronised gearboxes. The plane of rotation of the rotors would have been capable of being swivelled through 80° using angled extension shafts.

It was proposed that the Fa 269 would adopt a high angle of attack when at rest using extremely long undercarriage units. For vertical take-off, the rotors would be lowered till their plane of rotation was parallel with the ground. For translation to conventional flight following take-off, the extension shafts were to pivot to the rear, the rotors then behaving as pusher propellers.[2]


Specifications (Fa 269)


Data from Air International, January 1975

General characteristics

Performance

Armament


References


  1. Lepage, Jean-Denis G.G. (2009). Aircraft of the Luftwaffe, 1935–1945: An Illustrated Guide. Jefferson, NC: McFarland & Company. p. 385. ISBN 978-0-7864-3937-9.
  2. Ford, Roger (2013). Germany's Secret Weapons of World War II. London, United Kingdom: Amber Books. p. 224. ISBN 9781909160569.

На других языках


[de] Focke-Achgelis Fa 269

Die Focke-Achgelis Fa 269 war ein Projekt des deutschen Herstellers Focke-Achgelis aus den 1940er Jahren zur Entwicklung eines Jagd-Wandelflugzeugs. Es wurde lediglich eine Attrappe erstellt.
- [en] Focke-Achgelis Fa 269

[it] Focke-Achgelis Fa 269

Il Focke-Achgelis Fa 269 era la designazione di un convertiplano da caccia progettato dall'azienda tedesca Focke-Achgelis negli anni quaranta e rimasto allo stadio di sviluppo[2].



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