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| Designed by a team led by Dr-Ir Erich Schatzki and retaining
traditional Fokker-type mixed construction, the
D XXI was conceived in answer to a specification formulated
by the KNIL (Koninklijk Nederlands Indisch
Leger), the aviation element of the Royal Netherlands
Indies Army, and was flown as a prototype on 27
February 1936. In the event, the initial production order
was placed by the Finnish government, which acquired
a manufacturing licence, a contract subsequently
being issued in the Netherlands on behalf of the homebased
LVA (Luchtvaartafdeling). The latter purchased
36 D XXIs powered by the 825hp Bristol Mercury VIII
nine-cylinder radial engine and armed with four wing-mounted
7.9mm FN-Browning M.36 guns. Seven were
acquired from the parent company by Finland, with delivery
flights commencing 27 August 1937, and a
further 35 were licence-built by VL (Valtion Lentokonetehdas), these being armed with four 7.7mm Brownings,
two being fuselage mounted, and having PZL- or
Tampella-built Mercury VII engines of 840hp. Two D
XXIs were purchased by Denmark which subsequently
licence-built a further 10, these mounting a pair of
20mm Madsen cannon and two 7.9mm machine guns,
and licence manufacture was also initiated in Spain by
Hispano Aviacion, assembly being undertaken at the
SAF-15 factory at La Rabasa, Alicante. At least one D
XXI was completed and flown in Spain with a Soviet
M-25 engine taken from an I-16 before the production
facility was overrun by Nationalist forces. At that time,
50 sets of wings, 25 fuselages and 25 undercarriages
for D XXIs were discovered. The D XXI was offered by
Fokker with various engines, including the Pratt &
Whitney Twin Wasp Junior, and the basic D XXI was
further developed with this engine in Finland by VL. The last Finnish-built Mercury-engined D
XXI was fitted with a Finnish-designed retractable
undercarriage after suffering a landing accident. It was
test flown on 19 June 1941, the fixed gear being restored
after another landing accident a month later.
| WEIGHTS |
| Take-off weight | 2050 kg | 4520 lb |
| Empty weight | 1450 kg | 3197 lb |
| DIMENSIONS |
| Wingspan | 11.00 m | 36 ft 1 in |
| Length | 8.20 m | 27 ft 11 in |
| Height | 2.95 m | 10 ft 8 in |
| Wing area | 16.20 m2 | 174.38 sq ft |
| PERFORMANCE |
| Max. speed | 460 km/h | 286 mph |
| Range | 930 km | 578 miles |
 | A three-view drawing (1280 x 952) |
| lxbfYeaa, e-mail, 14.03.2024 05:25 20 reply | | R.D. Sumangil, e-mail, 30.01.2012 00:38 It's a beautiful airplane. Where can I get good three-view drawings that I can use to build a radio control model of the Fokker DXXI? reply | | Jarno, e-mail, 13.07.2011 16:50 This aircraft might be ugly to look at, small and not looking like much of a match for anything. But in fact these were a match for most of the aircraft up to 1946. It was highly pretty fast and feared by the Germans and Japanese, also all captured aircraft were used by the Germans to defend from incoming bombers and fighters. leo rudnicki,s claim for retractable gear might be true. But thanks to the war that never got done and plans to update this Fokker was already underway. Updates would include a new faster engine, retractable gear, 4 bladed prop and the possibility for external tanks for longer range. This updated version would have been for the Dutch airforce only and was to be ready with 1941, but due to the war it was scrapped. reply |
| leo rudnicki, e-mail, 14.04.2009 19:46 Dr Schatzki didn't like Corporate interference in his design and went to Koolhoven to develop the FK.58 with retractable gear. Reminds me of Roy Fedden and Donovan Berlin at Bristols and Curtiss. If Geoffrey De Havilland worked for a corporation, the Mosquito would look just like the Albemarle, the Bristol /Armstrong-Whitworth glider tug. Luckily for Britain, the Albemarle appeared just when they needed a good glider tug. reply |
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