Fokker G I


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Fokker G I

In November 1936 the prototype Fokker G.I heavy fighter caused a sensation when exhibited at the Paris Air Show, which in those days did not have a flying display but only a static exhibition in the Grand Palais. The concept of a twin-boom twin-engined fighter, later adopted for the Lockheed P-38 Lightning, was revolutionary at the time, and the new aircraft was the centre of much critical appraisal.

After the Show, the G.I was taken to Eindhoven/Welschap airfield, from where its first flight was made on 16 March 1937. The G.I was then powered by two 559kW Hispano-Suiza 80-82 counter-rotating radial engines, but problems with these prototype units resulted in a change to similarly rated Pratt & Whitney SB4-G Twin Wasp Juniors during reconstruction, after the G.I suffered brake failure and rammed a hangar at Schiphol on 4 July 1937.

Demonstrations had already been given to the Netherlands army air corps at Soesterberg, and considerable interest was shown, resulting at the end of the year in an order for 36 aircraft to be designated G.IA. In order to ease the spares situation, it was stipulated that these must have Bristol Mercury VIII engines, which were also to power the T.V bomber and D.XXI fighter already on order for the air corps.

This decision brought delay because although G.IA production began immediately there was a hold-up in the supply of engines. Thus the first production aircraft to fly, actually the second of the batch, became airborne only on 11 April 1939. It remained with the makers for production testing and modifications, and the first aircraft was delivered to Soesterberg on 10 July 1939.

Possibilities of export orders followed the aircraft's debut at Paris and a number of foreign pilots came to Fokker to fly and evaluate the G.IB export version. Orders were placed by Finland (26), Estonia (9), Sweden (18) and Republican Spain (12), while a licence-production agreement was in negotiation with Denmark and another with Manfred Weiss in Hungary. The Dutch embargo on weapons exports before World War II killed the Spanish order, but the Finnish batch was under construction when war broke out and a ban was then placed on its export. After lengthy negotiations a contract was drawn up to permit the G.IB's export on 17 April 1940, by which time 12 had been completed, apart from armament.

When Germany attacked the Netherlands on 10 May 1940, 23 were in service: 12 with the 4th Fighter Group at Alkmaar and 11 with the 3rd Fighter Group at Rotterdam/Waalhaven. The were successful in destroying several'Junkers Ju 52/3ms during the early stages of the German invasion, but by the fifth day, when Dutch resistance ended, only a single example remained airworthy.

The Germans occupied the Fokker factory, ordering completion of the 12 intended for Finland, and these were used subsequently by the Luftwaffe as fighter trainers. Test flights from the factory were made under German supervision, but on 5 May 1941 two Dutch pilots succeeded in evading an escorting German-flown G.I and escaped to England. Their G.IB was taken to the Royal Aircraft Establishment, Farnborough, for examination, and used subsequently by Phillips and Powis (Miles Aircraft) at Reading for research into wooden construction.

A total of 62 is believed to have been built, and none survived the war.

Fokker G I

 ENGINE2 x Bristol Mercury VIII radial piston engines, 619kW
  Take-off weight4800 kg10582 lb
  Empty weight3360 kg7408 lb
  Wingspan17.15 m56 ft 3 in
  Length11.50 m38 ft 9 in
  Height3.40 m11 ft 2 in
  Wing area38.30 m2412.26 sq ft
  Max. speed475 km/h295 mph
  Cruise speed355 km/h221 mph
  Ceiling9300 m30500 ft
  Range1400 km870 miles
 ARMAMENT9 x 7.9mm machine-guns, 400kg of bombs

Fokker G IA three-view drawing (1280 x 850)

Cor, e-mail, 17.02.2016 01:04

When this plane flew in March 1937 it was good enough. Its armament with two 23 mm cannons and two 7.9 mm guns (and one in the rear) was very good. Unhappily, the Dutch government followed the British example to install many machine guns and forbid the cannons. Instead they prescribed eight 7.9 mm guns in the nose. In the same year, in England the biplane Gloster Gladiator was presented......


Glenn, e-mail, 24.10.2012 05:19

@Jarno Where did you learn your history from, Hollywood? Inncorrect on all accounts!! If you knew ANYTHING about history, you would know that the P-38 was far faster that this aircraft.


Ian, e-mail, 06.02.2012 13:18

With a top speed below 300mph & an all rifle calibre machine gun armament I wouldn't say this was way in advance of anything but the jets of it's era. A somewhat over optimistic appraisal.


Jarno, e-mail, 13.07.2011 16:39

This aircraft was far superior to anything in the entire world at that time, even the American aircrafts that followed in the war. Even the P38 would be no match against this aircraft. It was far ahead of everything else in it's time. (not counting in the jet fighters, but most of those even were no match for this G.1)


paul scott, e-mail, 16.09.2009 20:54

Neat 'plane rom the Dutch!


Bernhard C.F. Klein, e-mail, 09.03.2009 20:14

There NEVER was a G.lA or a G.lB!! They were officially clasified by Fokker as G.1 Wasp and G.l Mercury. Dutch air force referring to them as G.lW and G.lM.
The Focke Wulf Fw 189 was a totally different design; had absolutely no connection whatsoever with the Fokker G.l.


JOE HARWOOD, e-mail, 19.01.2009 13:31

How much of this design was carried over when Focke Wulf made the 189?


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