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The experimental VAK 191 B is the prototype of a single-seater VTOL (vertical take-off and landing) fighter and reconnaissance plane designed to fly at high subsonic speeds.

The VAK 191 is one of three VTOL planes developed in the Federal Republic of Germany. It originated with a NATO competition in 1961 for the development of a successor to the ground support and reconnaissance jet Fiat G-91 with VTOL capability. The project was initially conceived as a joint effort by Italy and Germany.The programme was modified several times and finally, after the withdrawal of Italy in 1968, was downgraded to a purely experimental programme. As a result, only three single- seater prototypes were produced.

The first VAK 191 B prototype subsequently became part of the Deutsches Museum collection and is now exhibited at the Flugwerft Schleissheim.

    Technical specifications:

    • Manufacturer: Vereinigte Flugtechnische Werke (VFW)-Fokker, Bremen, Germany, 1970
    • Wingspan:  6.2 m
    • Take-off weight: 8500 kg (vertical take-off)
    • Maximum speed: 1100 km/h
    • Ceiling: approx. 15 km
    • Power plant: 1 x  Rolls-Royce / MTU RB 193-12 lift / cruise engine, 2 x Rolls Royce RB 162-81 lift engines
    • Thrust: 1 x 45,2 kN, 2 x 26,5 kN