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Fokker G.I

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Wingspan  17 m
First flight  March 16, 1937
Manufacturer  Fokker
Length  10 m
Engine type  Radial engine
Designer  Erich Schatzki
Fokker G.I Fokker GI Fighter Aircraft Pinterest

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The Fokker G.I was a Dutch heavy twin-engined fighter aircraft comparable in size and role to the German Messerschmitt Bf 110. Although in production prior to World War II, its combat introduction came at a time the Netherlands were overrun by the Germans. The few G.Is that were mustered into service were able to score several victories. Some were captured intact after the Germans had occupied the Netherlands. The remainder of the production run was taken over by the Luftwaffe for use as trainers.

Contents

Fokker G.I MPM 172 Fokker GI Mercury

Design and development

Fokker G.I 1000 images about Fokker G1 on Pinterest Museums Luftwaffe and TVs

The G.I, given the nickname le Faucheur ("The Reaper" in French), was designed as a private venture in 1936 by Fokker chief engineer Dr. Schatzki. Intended for the role of jachtkruiser, "heavy" fighter or air cruiser, able to gain air superiority over the battlefield as well as being a bomber destroyer, the G.1 would fulfill a role seen as important at the time, by advocates of Giulio Douhet's theories on air power. The Fokker G.I utilized a twin-engined, twin-boom layout that featured a central nacelle housing two or three crew members (a pilot, radio operator/navigator/rear gunner or a bombardier) as well as a formidable armament of twin 23 mm (.91 in) Madsen cannon and a pair of 7.9 mm (.31 in) machine guns (later eight machine guns) in the nose and one in a rear turret.

Fokker G.I WINGS PALETTE Fokker GI Faucher Netherlands

Besides its main mission, the G.1 could be configured for ground attack and light bombing missions (it could carry a bomb load of one 400 kg/882 lb bomb or combinations of two 200 kg/441 lb or 10 26 kg/57 lb bombs).

Fokker G.I httpsuploadwikimediaorgwikipediacommons00

The design and construction of the prototype (registered as X-2) was completed in just seven months. At its introduction at the Paris Air Show in November 1936, even before its first flight, the G.I was a sensation, appearing in a purple and yellow finish (evocative of the Spanish Republican colors, thought to be Fokker's first export customer).

Fokker G.I WINGS PALETTE Fokker GI Faucher Netherlands

Like all Fokker aircraft of the period, the G.I was of mixed construction; the front of the central pod were built around a welded frame, covered with aluminium plating. The back of the central pod, however, as well as the wings, were completely constructed with wood.

The G.I prototype, powered by 485 kW (650 hp) Hispano-Suiza 14AB-02/03 engines, had its first flight at Welschap Airfield, near Eindhoven on 16 March 1937 with Karel Mares at the controls. Later, Emil Meinecke took over much of the test flights. The maiden flight went well, but a subsequent test flight in September 1937 ended with a supercharger explosion that nearly caused the loss of the prototype. The accident prompted a replacement of the Hispano-Suiza engines with 559 kW (750 hp) Pratt & Whitney SB4-G Twin Wasp Junior engines.

Operational history

During testing, the company received a contract from the Spanish Republican government for 26 G.1 "export" versions with Pratt & Whitney engines. Despite receiving payment, the order was destined never to be fulfilled as the Dutch government placed an embargo on the sale of military equipment to Spain. Fokker however continued building the aircraft and a story was released to the press that they were intended for Finland, hence the persistent tales about a "Finnish" order. To make matters more complex, Finland showed great interest in the G.I, but eventually purchased Bristol Blenheim light bombers.

Besides the Dutch Luchtvaartafdeeling, several foreign air forces showed an interest in the G.I. as either a fighter or dive-bomber. In order to test its potential as a dive-bomber, the G.1 prototype was fitted with hydraulically operated dive brakes under the wings. Flight tests revealed that the G.1 was capable of diving at over 644 km/h (400 mph) and demonstrated aerobatic capabilities. Swedish Air Force officer Captain Björn Bjuggren tested the G.1 in over 20 dives and reported favourably on its effectiveness as a dive bomber. Orders for G.1b Wasp aircraft came from Spain (26 ordered) and Sweden (18), while the Mercury variant was ordered by Denmark (12) together with a production license that never became to be used, and Sweden (72). Although Belgium, Finland, Turkey, Hungary and Switzerland air forces showed great interest, they never placed firm orders.

The Luchtvaartafdeeling ordered 36 G.I's with 541 kW (725 hp) Bristol Mercury VIII engines, the standard engine used by the Dutch Air Force in the Fokker D.XXI fighter, in order to equip two squadrons. Only the first four examples were built as three-seaters intended for ground-attack, with the remainder being completed as two-seat fighters. During the lead-up to hostilities, a total of 26 G.I's were operational in the 3rd Jachtvliegtuigafdeling (JaVA) at Rotterdam (Waalhaven Airfield), and 4th JaVA Fighter Group at Bergen near Alkmaar. The aircraft were actively involved in border patrols and in order to ensure neutrality, on 20 March 1940, a G.1 from 4th JaVA forced down an Armstrong Whitworth Whitley from the RAF's 77 sqn when it strayed into Dutch air space.

Battle of the Netherlands

On 10 May 1940, when Nazi Germany invaded the Netherlands, 23 G.1 aircraft were serviceable while production of Spain's order of the G.1 Wasp variant continued with a dozen aircraft completed, awaiting armament.

The German invasion started with an early morning (03:50 hours) Luftwaffe attack on the Dutch airfields. While the 4th JaVA received a devastating blow, losing all but one of its aircraft, eight 3rd JaVA G.1 fighters were scrambled in time and successfully engaged several German aircraft. The surviving aircraft continued to fly, but with mounting losses, bringing their numbers down to three airworthy aircraft by the end of the first day. Despite the heavy losses of 4th JaVA, some of the planes could be kept in the air, by scavaging parts from various planes. In the "Five-day War", the available G.1 fighters were mainly deployed in ground attack missions, strafing advancing German infantry units, but also used to attack Junkers Ju 52/3m transports. Although reports are fragmentary and inaccurate as to the results, G.1 fighters were employed over Rotterdam and the Hague, contributing to the loss of 167 Ju 52s, scoring up to 14 confirmed aerial kills.

Aftermath

At the conclusion of hostilities, several G.Is were captured by the Germans, with the remainder of the Spanish order completed at the Fokker plant by mid-1941 in order for the G.1s to be assigned as fighter trainers for Bf 110 crews at Wiener Neustadt. For the next two years, Flugzeugführerschule (B) 8 flew the G.1 Wasp until attrition grounded the fleet.

On 5 May 1941, a Fokker test pilot, Hidde Leegstra, accompanied by engineer (and member of the Fokker Board of Directors) Ir. Piet Vos, managed to fly a G.1 to England. The crew's subterfuge involved acquiring additional fuel for the supposed test flight as well as ducking into clouds to deter the trailing Luftwaffe aircraft from following. After landing in England, the G.1 was conscripted by Phillips and Powis Aircraft, later Miles Aircraft. The company had designed an all-wooden fighter-bomber, and was interested in the G.1 wing structure and its resistance to the rigours of a British climate. Despite being left outdoors for the remainder of the war, the G.1 survived only to be eventually scrapped after 1945.

There are no surviving G.Is today, although a replica has been built. This could be found at the Dutch Air Force Museum in Soesterberg until 2013. Nowadays, it is in storage at the National Military Museum (NMM), also located at Soesterberg.

Variants

  • G.I : Prototype, powered by two Hispano-Suiza 14AB-02/03 engines; one built, c/n 5419.
  • G.I Mercury : Two and three-seat models, powered by Bristol Mercury VIII engines; 36 built, c/n 5521-5556.
  • G.I Wasp : Two-seat, smaller "export model" , powered by Pratt & Whitney SB4-G Twin Wasp Junior; 26 built, c/n 5557-5581.
  • Operators

     Netherlands
  • Luchvaartafdeling (LVA)
  •  Germany
  • Luftwaffe (small numbers)
  • Specifications (Fokker G.I Mercury)

    Data from Nederlandse Vliegtuig Encyclopedie No.12: Fokker G-1 (2nd edition); The Fokker G-1

    General characteristics

  • Crew: 2-3
  • Length: 10.87 m (35 ft 8 in)
  • Wingspan: 17.16 m (56.29 ft)
  • Height: 3.80 m (12.4 ft)
  • Wing area: 38.30 m² (412.26 ft²)
  • Empty weight: 3,325 kg (7,330 lb)
  • Loaded weight: 4,800 kg (10,582 lb)
  • Max. takeoff weight: 5,000 kg (11,023 lb)
  • Powerplant: 2 × Bristol Mercury VIII nine-cylinder air-cooled single-row piston radial engine, 730 hp at 2,650 rpm for takeoff, 830 hp (618 kW) at 4,100m at 2,750rpm maximum continuous power (545 kW) each
  • Performance

  • Maximum speed: 475 km/h at 4,100m (295 mph)
  • Range: 1,510 km (938 mi)
  • Service ceiling: 10,000 m (32,808 ft)
  • Rate of climb: 13.5 m/s (44.29 ft/s)
  • Wing loading: 125.3 kg/m² (25.68 lb/ft²)
  • Power/mass: 0.22 kW/kg (0.14 hp/lb; 0.30 hp/kg)
  • Time to altitude: 6.0 min 20 sec to 5,000 m (16,405 ft)
  • Armament

  • 8× 7.9 mm (0.31 in) forward-firing FN-Browning machine guns in the nose
  • 1× 7.9 mm (0.31 in) machine gun in rear turret
  • 300 kg (660 lb) of bombs (G.1 Wasp could take 400 kg (880 lb))
  • References

    Fokker G.I Wikipedia


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