Focke-Wulf A 20 Habicht
The Focke-Wulf A 20 Habicht (German: "Hawk") was an airliner developed in Germany in the late 1920s. It was a high-wing cantilever monoplane with fixed tailskid undercarriage. The fuselage was deep and seated four passengers in a fully enclosed cabin. The type was not bought by the airlines and only a few examples were built.
Type
A20 1 + 4 seat airliner
A20a  1 + 4 seat airliner
Engine
1 Daimler DIIa
1 Wright Whirlwind
Dimensions
Length 10.02 m, span 16.0 m
 
Weights
Empty 988 kg, flying weight 1425 kg
Empty 1000 kg, flying weight 1600 kg
Performance
Max. speed 145 km/h
Max. speed 170 km/h
Type
Werk.Nr
Registration
History
A 20
34
D-1159, D-OFOR
In Febr. 1928 delivered to Schwäbisch-Bayerischen Fluggesellschaft, in May to Nordbayerischen Verkehrsflug
and in April 1932 sold to Fliegerschule Dittmar
A 20a
52
D-1482
In Aug. 1928 registered to FW AG, sold abroad in Aug. 1930
A 20
53
D-1439
In July 1928 to Luftverkehrs-Gesellschaft mbH at Wilhelmshafen-Rüstringen. Probably scrapped 1935
A 20
94
D-1726
In July 1929 owned by Leonard Monheim - Trump Schokoladenfabrik, Aachen, used for PR. Maintenance was
managed by the Lufthansa. From Aug. 1931owned by K. F. Roeder, Wiesbaden
Fw A 20 D-1159
Fw A 20a D-1482
A 20 prototype
The Focke Wulf " Habicht "
In addition to the larger " Moewe " described last week, the Foc.ke Wulf firm exhibit a small " feeder line " type of machine, the " Habicht " (Hawk), with Wright " Whirlwind " engine. The works series designation of this machine is A.20A, the " Habicht " being known, when fitted with a 120 Mercedes-Benz engine, as the type A.20, and as the A.28 when the power plant is the Bristol " Titan " engine. In either case the machine is of typical Focke-Wulf design : a cantilever monoplane with a wing of " Zanonia leaf " plan form, which is claimed to improve lateral stability, even at angles past the stall.
The cantilever monoplane wing is built entirely of wood, a large box-section spar forming the main structure, but the leading edge also being planked with ply-wood. The whole is afterwards covered with fabric. The fuselage has plywood covering over the cabin portion, and the forward part, engine mounting and pilot's cockpit, is aluminium covered.
The small cabin has four seats, and as the machine is very low on the ground, entrance is direct through the door in the port side, without the use of steps. The pilot sits ahead of the wine:, partly under the leading edge
The undercarriage is similar to that of the " Moewe," i.e., with axles and radius rods hinged to the lower longerons and vertical struts to the leading edge of the wing, inside which are the rubber cords which absorb the landing shocks.
The Wright " Whirlwind " engine is mounted in the nose, with the two petrol tanks housed, one on each side, inside the leading edge of the wing, giving direct gravity feed to the carburettor.
The main dimensions of the " Habicht " are : Length o.a., 10-2 m. (33-5 ft.) ; wing span, 16 m. (52-5 ft.) ; wing area, 32 sq. m. (344 sq. ft.). The tare weight of the machine is 1,000 kg. (2,200 lbs.) ; permissible load, 600 kg. (1,320 lbs.) ; total loaded weight, 1,600 kg. (3,520 lbs.). Maximum speed, 170 km./h. (105 m.p.h.) ; cruising speed, 150 km./h. (93 m.p.h.) ; landing speed, 80 km. h. (50 m.p.h.). Climb to 1,000 in, (3,280 ft.) in 5-4 mins. Ceiling 5,500 m, (18,000 ft.). Range, 650 km. (400 miles').

Flight Febr. 1930

Stopping the Spin without Slots
THE general press at home, and in Germany, has been much impressed by a recent demonstration of " non-spinning qualities on the part of a Focke-Wulf commercial monoplane,  the " Habicht " (Hawk). This machine, or one like it, was exhibited on the Focke-Wulf stand at the Berlin Aero Show in 1928, and is a " feeder line " type of machine with (in the exhibition machine) a Wright " Whirlwind " engine. At the recent demonstration over the Tempelhof aerodrome, Berlin,  the machine was flown stalled on several occasions, and showed no signs of dropping into a spin. No " gadgets " of any sort are fitted, the stability being obtained solely by the shape of the wing and, one suspects, by a judicious forward placing of the e.g. The plan form of the Focke-Wulf machines has, in all types, been based largely on the Zanonia plant's winged seeds, much as were the early Taube monoplanes. In the Focke-Wulf monoplanes, however, the projecting,  upward-turned flaps are much less pronounced, but apparently much of the lateral stability is still maintained. As the Focke-Wulf monoplanes have also been known for their good aerodynamic efficiency, it may be assumed that tiie stability is obtained without sacrificing other good qualities

 
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