Fokker F.III
Fokker F.III | |
---|---|
Fokker F.III operated by KLM | |
Role | Passenger transport |
Manufacturer | Fokker |
Designer | Reinhold Platz |
First flight | April 1921 |
Primary users | Deutsche Aero Lloyd KLM |
Number built | c.66 |
Developed from | Fokker F.II |
The Fokker F.III was a single-engined high-winged monoplane aircraft produced in the 1920s by the Dutch aircraft manufacturer Fokker. It could carry five passengers. The aircraft was also built under licence in Germany as the Fokker-Grulich F.III.
The design was quite popular when it was shown at the 1921 Paris Air Show, and it proved to be a successful early airliner. Although quickly surpassed by later designs in the 1920s, it was used on many early air routes in Europe. It was also involved in KLM's first air accident, which lead to radio's being required on aircraft.
Design and development
The Fokker F.III[1] was a straightforward development of the F.II. A widened cabin allowed all five passengers to sit within; in the earlier aircraft, one passenger sat alongside the pilot in his exposed cockpit. The pilot now sat alongside the engine, which was offset laterally by about 100 mm (3.9 in); whether to port or starboard depended on the type of engine installed. Although this unusual arrangement meant that pilots were "burned on one side and frozen on the other," they had a much better view than from the F.II. The view was further improved by a cut-out in the wing leading edge for the pilot's head, allowing his seat to be raised. The external wing struts of the F.II were removed, leaving a clean cantilever wing. The trapezoidal windows seen in the Grulich built F.IIs were standard on the F.III.
Like its predecessor, the F.III was initially powered by a readily available, war surplus 138 kW (185 hp)
A seaplane version was developed by Fokker, called the F.IIIw. However, this design did not go into production. The design had twin floats, and it had a longer fuselage and rudder. Such was the pace of aircraft development no blueprints are known, only several photographs.[2]
An improved model known as the F.IIIs was also made, and this had new fuselage and tail fin. It was also called the Grulich V.I.[3]
Operational history
The F.III was first used by
Another operator of new F.IIIs was Deutsch-Russiche Luftverkehrs Gesellschaft (Deruluft) which used nine aircraft on their Berlin-Königsberg-Moscow route from May 1922. These machines, partially built in Schwerin and finished in the Netherlands at Veere, had Eagle engines. One was a Fokker-Grulich.
Deutsche Aero Lloyd gained a licence to build F.IIIs as they had for
Another operator from new was the Hungarian airline Malert, which received six Dutch-built aircraft for their Budapest-Vienna-Belgrade service from 1922 to 1929. These initially had BMW IIIa engines, but later ran with 172 kW (231 hp) Breitfeld & Daněk Hiero IV engines. They had larger wings, increased in area by about 14%. Deutsche Luft-Reederei also operated two, originally intended for KLM. Four F.IIIs probably went to the United States.
Later F.IIIs changed ownership frequently as airlines went bankrupt or merged. They were still flying commercially in Germany until about 1936.
Accidents and incidents
The F.III as involved into two air crashes, that due to developing nature of air travel had a big impact. For example, one disappearance lead to the radios being required on aircraft.
- 1924 KLM Fokker F.III disappearance (This was the first major air accident of the airline KLM)
- On 24 April 1924, Fokker F.III H-NABS of Amsterdam. The aircraft was not heard of again. It was presumed to have crashed into the sea, killing the pilot and both passengers.[4]
- On 24 April 1924, Fokker F.III H-NABS of
- On 25 June 1925, a KLM Fokker F.III, registration H-NABM, crashed at Landrécies, France in poor weather while on an Amsterdam-Paris service, killing all four on board.
- 1928 KLM Fokker F.III Waalhaven crash
Operators
- 1 Privately owned
- Det Danske Luftfartselskab
- Deutsch-Russiche Luftverkehrs Gesellschaft (Deruluft)
- Deutsche Aero Lloyd
- Deutsche Aero Luft
- Sud-deutsche Luft Hansa
- Koninklijke Luchtvaart Maatschappij (KLM)
- Balair, operated 5 ex-KLM 1926-1928[5]
- Ost Schweizer Aero Gesellschaft (East Swiss Aero Company); operated 1 ex-Balair until 1929[5]
Specifications
Data from FOKKER COMMERCIAL AIRCRAFT from the F.1 of 1918 up to the Fokker 100 of today.,[1] Jane's all the World's Aircraft 1924,[6] Flight 26 May 1921 : The Fokker F III Commercial Monoplane[7]
General characteristics
- Crew: 1
- Capacity: 5 passengers
- Length: 11.07 m (36 ft 4 in)
- Wingspan: 17.68 m (58 ft 0 in)
- Height: 3.2 m (10 ft 6 in)
- Wing area: 45.65 m2 (491.4 sq ft)
- Empty weight: 1,200 kg (2,646 lb)
- Gross weight: 1,905 kg (4,200 lb)
- Fuel capacity: 355 L (94 US gal; 78 imp gal)
- Powerplant: 1 × Siddeley Puma 6-cylinder water-cooled in-line piston engine, 170 kW (230 hp)
- Propellers: 2-bladed fixed-pitch wooden propeller
Performance
- Maximum speed: 169 km/h (105 mph, 91 kn)
- Cruise speed: 135 km/h (84 mph, 73 kn)
- Range: 1,000 km (620 mi, 540 nmi)
References
- ^ a b de Leeuw, Rene (Editor); Stone, Serge (Illustrator) (1994). FOKKER COMMERCIAL AIRCRAFT from the F.1 of 1918 up to the Fokker 100 of today. Amsterdam: N. V. Konninklijke Nederlandse V. Fokker. pp. 22–29, 181–182.
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has generic name (help) - ^ www.dutch-aviation.nl http://www.dutch-aviation.nl/index5/Civil/index5-2%20F3.html. Retrieved 30 December 2023.
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(help) - ^ www.dutch-aviation.nl http://www.dutch-aviation.nl/index5/Civil/index5-2%20F3.html. Retrieved 30 December 2023.
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(help) - ^ "Lost Aeroplane. Unavailing Search For Dutch Machine". The Times. No. 43636. London. 26 April 1923. col F, p. 10.
- ^ a b c www.dutch-aviation.nl http://www.dutch-aviation.nl/index5/Civil/index5-2%20F3.html. Retrieved 30 December 2023.
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(help) - ^ Grey, C.G., ed. (1924). Jane's all the World's Aircraft 1924. London: Sampson Low, Marston & company, ltd. pp. 175b–176b.
- Flight. XIII (21): 355–359. 26 May 1921. No. 648. Retrieved 21 May 2019.
Further reading
- Warner, Edward P. (May 2008). "Les avions de ligne au banc d'essai en 1921" [Airlines on the Test Bench in 1921]. Le Fana de l'Aviation (in French) (462): 44–55. ISSN 0757-4169.
- Weyl, A.R. (1965). Fokker: The Creative Years (1st ed.). London: Putnam. ISBN 0-85177-817-8.