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Focke-Wulf Fw 58 Weihe

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The Focke-Wulf Fw 58 Weihe (Harrier) was a twin-engine multi-role aircraft designed and produced by the German aircraft manufacturer Focke-Wulf.

Fw 58 Weihe
General information
TypeTrainer, Transport, Air Ambulance
ManufacturerFocke-Wulf
Primary userLuftwaffe
Number built1,350
History
Introduction date1937
First flight1935
Retired1940s

It was developed in response to a request from the Luftwaffe, which sought a multi-role aircraft that could be operated as an advanced trainer for pilots, gunners and radio operators alike. The resulting Fw 58 was a low-wing monoplane powered by a pair of Argus As 10C V-8 piston engines mounted in nacelles on the wing's leading edges. The crew were seated under an enclosed canopy. Aft of the flight deck, the fuselage was open to form a moveable MG 15 machine gun station. The tailwheel undercarriage was retractable. The nose could either be glazer or faired over. The first prototype performed its maiden flight in 1935; the Fw 58 entered regular service two years later.

The Fw 58 was procured in large numbers by the Luftwaffe and thus was widely used across Germany for the training of several categories of military personnel. Furthermore, the type was routinely operated in other capacities, including as a VIP transport, air ambulance, feeder airliner, photo reconnaissance and weather research aircraft.[1] It was also operated as an airliner by the German flag carrier Deutsche Luft Hansa. Several were owned by private pilots, including the aeronautical engineer Kurt Tank. Outside of Germany, the type was built under license by several other nations, including Bulgaria, Hungary and Brazil. Other nations that procured the Fw 58 included the Netherlands, Romania, Croatia and Turkey.

Design and development

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Work on the Fw 58 commenced during the early 1930s; its development was closely paralleled by the Arado Ar 77, which was designed to fulfil the same specification.[2]

The Fw 58 featured welded steel tube construction across its fuselage along with mixed materials for its covering.[2] It had a semi-cantilever wing that was primarily metal, but made use of fabric aft of the spar. This wing was mounted relatively low on the fuselage, the centre sections of which were braced between the uppermost point of the engine mounting and the fuselage.[2] In contrast, the tailplane, which was positioned forward of the fin, was braced from beneath via struts. The underside of both of the engine nacelles featured a recess into which the main undercarriage retracted into during flight.[2] The Fw 58 was powered by a pair of Argus As 10C V-8 inverted air-cooled piston engines, capable of generating up to 240 PS (240 hp; 180 kW).[2]

During 1935, the first prototype conducted its maiden flight.[2] It was quickly joined by the second prototype which, unlike the first, had been constructed to a military configuration; one of the more prominent visual differences between the two aircraft was the presence of defensive MG 15 machine guns in the nose and dorsal positions of the latter. The configuration of the second prototype, sometimes referred to as Fw 58A, did not actually correspond to many of the quantity production aircraft as production was quickly transitioned to the improved Fw 58B, which most closely corresponded to the design of the fourth prototype.[3] This model featured the ability to carry bombs and could even be outfitted with floats; when in the latter configuration, the aircraft was designated as Fw 58BW. However, the definitive production model was the Fw 58C, which had a faired-in nose and could accommodate up to six passengers.[4]

Operational history

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A major customer for the Fw 58 was the Luftwaffe, a large number of its operational units were equipped with multiple aircraft, either Fw 58Bs or Fw 58Cs, for light transport and communications purposes.[4] The type would see use as an air ambulance and several other secondary roles, including aerial application for agricultural products. At least 30 specially configurated Fw 58s were deployed to the Eastern Front to spray potential sources of disease for German ground forces.[5]

Between 1938 and 1939, eight aircraft in an airliner were supplied to the German flag carrier Deutsche Luft Hansa.[4] Furthermore, a few aircraft were used for various experimental purposes, including early trials of aerial refuelling apparatus. Numerous private pilots, including the aeronautical engineer Kurt Tank (who had headed the design of the Fw 58), operated the type as a personal aircraft.[4]

Variants

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Fw 58 V1
First prototype, first flown in 1934[6][7]
Fw 58 V2
Second prototype.
Fw 58 V3
Third prototype.
Fw 58 V4
Fourth prototype.
Fw 58 V14
Fw 58 V14, D- OPDR, was fitted with Fowler flaps and boundary layer suction for high-lift experiments at AVA, Göttingen. The suction system was powered by a Hirth aircraft engine in the fuselage and the air exited through two circumferential, parallel rows of slots in the rear fuselage section.[8]
Fw 58B
Fw 58B-1
Fw 58B-2
This version had a glazed nose and was armed with a 7.92 mm (0.312 in) MG 15 machine gun.
Fw 58C
Solid-nosed, the main wartime production variant, six passenger transport with 260hp Hirth HM 508D engines
Fw 58W
Twin-float floatplane version.

Operators

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  Austria
  Argentina
  Brazil
  Bulgaria
  Croatia
  Czechoslovakia
  Finland
  Nazi Germany
  Hungary
  Netherlands
  Norway
  Poland
  Romania
  Slovakia
  Spain
  Turkey
  Soviet Union

Surviving aircraft

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The only Fw 58 on display is at Museu Aeroespacial in Rio de Janeiro, Brazil. Brazil used this airplane mainly for maritime patrols and the example on display was one of the 25 Fw 58B-2 units license-built in Brazil by Fábrica de Galeão, circa 1941.

An Fw 58 C-2 is stored in the Norwegian Aviation Museum in Bodø.[13]

An Fw 58 C crashed on 30 March 1943 in the Lac du Bourget, France, after a low-flying training pass over the lake went wrong. Two of the four airmen on board were rescued by local fishermen. The wreckage lies at a depth of over 112 meters. Due to the dark and cold water, it is still fairly well preserved, though the canvas over the tube frame light structure is gradually deteriorating. A proposal has been made to raise the wreckage, but local divers are strongly opposed because of its status as a war grave, and the risks of damaging it.[14][15]

Specifications (Fw 58B)

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Focke-Wulf Fw.58 3-view drawing from L'Aerophile February 1936

Data from Die Deutsche Luftrüstung 1933–1945 Vol.2 – Flugzeugtypen Erla-Heinkel[6]

General characteristics

  • Crew: Four
  • Length: 14.1 m (46 ft 3 in)
  • Wingspan: 21 m (68 ft 11 in)
  • Height: 4.2 m (13 ft 9 in)
  • Wing area: 47 m2 (510 sq ft)
  • Airfoil: NACA 2212[16]
  • Empty weight: 2,000 kg (4,409 lb)
  • Gross weight: 2,930 kg (6,460 lb)
  • Fuel capacity: 340 L (90 US gal; 75 imp gal) in two centre-section tanks, with a 34 L (9.0 US gal; 7.5 imp gal) oil tank
  • Powerplant: 2 × Argus As 10C V-8 inverted air-cooled piston engines 240 PS (240 hp; 180 kW)
  • Propellers: 2-bladed variable-pitch propeller, 2.5 m (8 ft 2 in) diameter

Performance

  • Maximum speed: 254 km/h (158 mph, 137 kn) at sea level
  • Cruise speed: 238 km/h (148 mph, 129 kn) * Landing speed: 76 km/h (47 mph; 41 kn)
  • Range: 690 km (430 mi, 370 nmi)
  • Service ceiling: 5,400 m (17,700 ft)
  • Rate of climb: 4.67 m/s (919 ft/min)
  • Time to altitude: 1,000 m (3,300 ft) in three minutes and 48 seconds
  • Wing loading: 59.8 kg/m2 (12.2 lb/sq ft)

Armament

See also

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Related lists

References

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Citations

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  1. ^ Wilson 2007, p. 60.
  2. ^ a b c d e f Smith and Kay 1972, p. 160.
  3. ^ Smith and Kay 1972, pp. 160-161.
  4. ^ a b c d Smith and Kay 1972, p. 161.
  5. ^ Smith and Kay 1972, pp. 161-162.
  6. ^ a b Nowarra 1993, pp. 60–63, 264–265.
  7. ^ Munson 1978, p. 55.
  8. ^ Luftfahrt international 18 (1976), pp. 2829ff
  9. ^ FR010 Fw 58B South America
  10. ^ "THE FOCKE WULF Fw 58 IN BRAZIL". Archived from the original on 2017-08-21. Retrieved 2017-08-21.
  11. ^ Focke-Wulf Fw 58 Gulub
  12. ^ Oryx. "Bye Bye Berlin: Türkiye's He 111 Bombers". Oryx. Retrieved 2023-05-23.
  13. ^ "Focke-Wulf". Norsk Luftfartsmuseum. Archived from the original on 25 August 2011.
  14. ^ Beckett, Jack (22 March 2017). "Focke-Wulf 58 Weihe crashed in 1943, the wreck is fairly well preserved after 70 years". abandonedspaces.com.
  15. ^ "Focke-Wulf Fw 58C" (PDF). X-Ray Mag. No. 73. 2016. pp. 71–75.
  16. ^ Lednicer, David. "The Incomplete Guide to Airfoil Usage". m-selig.ae.illinois.edu. Retrieved 16 April 2019.

Bibliography

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  • Kulikov, Victor (March 2000). "Des occasions en or pour Staline, ou les avions allemands en URSS" [Golden Opportunities for Stalin, or German Aircraft in the USSR]. Avions: Toute l'Aéronautique et son histoire (in French) (84): 16–23. ISSN 1243-8650.
  • Kulikov, Victor (April 2000). "Des occasions en or pour Staline, ou les avions allemands en URSS". Avions: Toute l'Aéronautique et son histoire (in French) (85): 44–49. ISSN 1243-8650.
  • Munson, Kenneth (1978). German Aircraft Of World War 2 in colour. Poole, Dorset, UK: Blandford Press. ISBN 0-7137-0860-3.
  • Nowarra, Heinz J. (1993). Die Deutsche Luftrüstung 1933–1945 Vol.2 – Flugzeugtypen Erla-Heinkel (in German). Koblenz, Germany: Bernard & Graefe Verlag. ISBN 3-7637-5464-4.
  • Sinnhuber, Karl (2012). Salzburg To Stalingrad. UK: Milton Keynes. ISBN 978-1-471-70222-8.
  • Smith, John Richard; Kay, Anthony L.; Creek, Eddie J. (1972). German Aircraft of the Second World War. London, UK: Putnam and Company Ltd. ISBN 978-1-55750-010-6.
  • Wilson, James (2007). Propaganda Postcards of the Luftwaffe. UK: Pen and Sword. ISBN 978-1844154913.
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