(Focke-Wulf) FW 44 Stieglitz @·AIRCRAFTUBE

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Focke-Wulf Fw 44

The Focke-Wulf Fw 44 is a 1930s German two-seat biplane known as the Stieglitz ("Goldfinch"). It was produced by the Focke-Wulf company as a pilot training and sport flying aircraft. It was also eventually built under license in several other countries.

Design and development

The Fw 44 was designed as a biplane with conventional layout and straight, non-tapered wings. Its two open cockpits were arranged in tandem, and both cockpits were equipped with flight controls and instruments. The Fw 44 had fixed tailwheel landing gear. It employed ailerons on both upper and lower wings. It did not use flaps. It was flown with a Siemens-Halske Sh 14 radial engine.

The first prototype flew in 1932. After many tests and modifications to increase the plane's durability and aerodynamics, the final Fw 44 proved to have excellent airworthiness.

A second version of the Fw 44 was the Fw 44B, which had an Argus As 8 four-cylinder inverted inline air-cooled engine of 90 kW (120 hp). The cowling for this engine gave the plane a more slender, aerodynamic nose.

20 Fw 44s purchased by China were modified for combat missions and participated in the early stage of the Second Sino-Japanese War until all were lost in action.

The last series version was Fw 44J, which was sold or built under license in several countries around the world. It was equipped with a seven-cylinder Siemens-Halske Sh 14 radial engine.

Variants

  • Fw 44A : Prototypes, 150 hp 7 cylinder Siemens Sh 14A engine. Two built: D-2409 was given to Gerd Achgelis on 12 Augustus, 1933, the day the Fw-44B made it's first flight. D-2465 was destroyed on 18 September, 1933 in an accident.
  • Fw 44B : First production model with a lenghtened fuselage (60 cm). Prototype was later transformed as a Fw 44D.
  • Fw 44C : In order to perform flight tests of the new 4-cylinder 135 hp Argus As 8B, a Fw 44B airframe (D-2621 / D-EGEF, W.Nr. 164) was equipped with this engine. Kurt Tank himself made the first flight on January 11, 1934. The aircraft was underpowered but autonomy increased from 575 to 610 km.
  • Fw 44D : The Fw 44B prototype was quickly equipped with inverted flight capability, seats were modified to allow the crew to sit on his parachute and a boot was fitted behind the rear seat. The front of the fuselage was modified, only the cylinder heads protruding from the profile and the landing gear modified to receive skis for take off and landing on snow. The Fw 44D was mass produced from January 1934.
  • Fw 44E : About twenty Fw 44D were equipped with Argus As 8B in-line engines.
  • Fw 44F : While the first Fw 44D left the factory, Kurt Tank was still trying to improve his biplane. The seats became adjustable in height, position lights were added and the luggage compartment became externally accessible through a hatch provided on the left side.
  • Fw 44H : In April 1941 a Fw 44D (F-ETXA W.Nr.67) was modified to receive the prototype of an online 160 hp Hirth HM 501A 6-cylinder engine. Only one other plane was also modified (W.Nr.751).
  • Fw 44J : Model originally intended for export that could use either a 150 hp Sh 14A engine or a 160 hp Sh 14A-4. The Fw 44J was produced in series in Bremen until 1936 and then by Bücker and Siebel before production was finally transferred to Prague at Ceskomoravska-Kolben-Danek (CKD), where 600 units were still built in the early 1940s. This machine performed admirably in several international events. Gerd Achgelis flew in the United States in 1934 and 1935 and placed third in the World Aerobatic Championships in Vincennes (near Paris). Count Hagenburg became Olympic champion in aerobatics on July 30, 1936 (aerobatics appeared only once in the Olympic Games program). In 1936, Focke-Wulf organized a tour in South America. This allowed signing a number of private orders (The Stieglitz was proposed at an average price of RM 18,000), but also was responsible for licensing agreements. The Fw 44J model was the most built.
  • Fw 44M : Designed for the North American market, this model appeared in 1937 and was equipped with an in-line 156 hp Menasco C4S Pirat engine. The prototype (D-ENGO) was to remain unique, despite the efforts of Focke-Wulf to sign licensing agreements with Fairchild, North American and Curtiss.
  • Fw 44N : Evolution of the Sh 14A engine, the 175 hp Bramo 325 was naturally fitted to a Fw 44J (D-EHVA) airframe. The aircraft also saw the introduction of a NACA fairing. A second aicraft (D-Egho) was built to carry out official tests at Rechlin E.Stelle in December 1934, but the engine development was not continued.

Operators

  • Argentina.
    • Argentine Air Force.
    • Argentine Navy.
  • Austria : Austrian Air Force (1927-1938).
  • Bolivia : Bolivian Air Force.
  • Brazil.
    • Brazilian Air Force.
    • Brazilian Naval Aviation.
  • Bulgaria : Bulgarian Air Force.
  • China : Republic of China Air Force.
  • Chile : Chilean Air Force.
  • Colombia : Colombian Air Force.
  • Czechoslovakia : Czechoslovakian Air Force (Postwar).
  • Finland : Suomen Ilmavoimat.
  • Germany : Luftwaffe.
  • Hungary : Hungarian Air Force.
  • Poland : Polish Air Force.
  • Romania : Royal Romanian Air Force.
  • Slovakia : Slovak Air Force (1939-1945).
  • Spain : Spanish Air Force.
  • Sweden : Swedish Air Force.
  • Switzerland : Swiss Air Force.
  • Turkey : (1937 - 1962).
  • Yugoslavia : SFR Yugoslav Air Force - Postwar.

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This text is available under the Creative Commons Attribution-ShareAlike License
Source : Article Focke-Wulf Fw 44 of Wikipedia ( authors )

Specifications (Fw 44)

  • Crew : two, student and instructor.
  • Length : 7.30 m (23 ft 11 in).
  • Height : 2.80 m (9 ft 2 in).
  • Wingspan : 9 m (29 ft 6 in).
  • Wing area : 20 m² (215.2 ft²).
  • Empty weight : 565 kg (1,243 lb).
  • Loaded weight : 770 kg (1,694 lb).
  • Max. takeoff weight : 785 kg (1,727 lb).
  • Maximum speed : 115 mph (100 kts or 185 km/h).
  • Stall speed : 49 mph (or 43 kts or 79 km/h).
  • Range : 550 km (340 mi).
  • Service ceiling : 3,900 m (12,790 ft).
  • Rate of climb : 17 m/s (56 ft/s).
  • Powerplant : One Siemens Sh 14 A-4 7-cylinder radial engine.
  • Power : 118 kW (160 hp) at 2,100 rpm.

— — — = = — — —

This text is available under the Creative Commons Attribution-ShareAlike License
Source : Article Focke-Wulf Fw 44 of Wikipedia ( authors )
Focke-Wulf FW 44 Stieglitz : Your comments on this subject
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