Variants
- D.XXI
- Prototype serial no FD-322
- D.XXI-1
- Pattern aircraft supplied to Denmark, 2 built powered by 645 hp (481 kW) Bristol Mercury VIS engines. Armed with 2x 8 mm (0.315 in) machine guns and 2x 20 mm (0.787 in) Madsen cannon
- D.XXI-1
- Production aircraft built at the Royal Army Aircraft Factory, 10 built powered by 830 hp (619 kW) Bristol Mercury VIII engines.
- D.XXI-2
- 53 Built, of which 36 were delivered to the RNLAF.
- D.XXI-3
- Finnish license-built D.XXI-2s. Number built: 38
- D.XXI-4
- Upgraded D.XXI-3, powered by 825 hp (615 kW) Pratt & Whitney R-1535-SB4C-G Twin Wasp Junior engines. Number built: 50
- D.XXI-5
- Upgraded D.XXI-4, powered by 920 hp (686 kW) Bristol Pegasus radial engines. Number built: 5
- Project 150
- Proposed version powered by a Bristol Hercules radial piston engine. Not built.
- Project 151
- Proposed version powered by a Rolls-Royce Merlin piston engine. Not built.
- Project 152
- Proposed version powered by a Daimler-Benz DB 600H engine. Not built.
Read more about this topic: Fokker D.XXI
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