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.
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
| 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 |
Focke-Wulf A. 20 Commercial aircraft "Habicht".
The A. 16 airliner, which was launched several years ago by Fockc-Wulf-Flugzeugnau AG, was already a complete success in terms of its
economy. In the meantime, Fs has been able to prove itself under the most
difficult conditions on various transport lines. The new A. 20 airliner represents a further development of this design, in which the Führer-raurri
in particular was made more spacious in order to offer pilots better comfort even on longer flights. The driver's seat is thereforeno longer located next to the engine, but behind it, separated by a
fire frame made of sheet steel. In order to secure the pilot even in
the event of rollovers, the space under the wings is swept in such a way that the pilot's head comes to run in a hollow in the wing.
The room is entered through the cabin and covered at the front
by a pane of shatterproof triplex glass. The fuel tanks are placed in such a way that the trim is no longer affected. The load compartment has reached an average height of 1.80 m in its entire length. Fr is further extended by
about 25 cm, so that seating arrangement in the direction of flight was made possible
The box chassis has been replaced by a chassis extending to the wing,the suspension of which is located in the wing nose.
The new design has lower resistance with a larger track width. As a result of these improvements, the aircraft has been given greater weight. Since the flight performance was also to be improved , the wing, which had previously been 14 m long, was enlarged to 16 m , whereby an extension of the fuselage by 0.51) m was necessary It can be assumed that the small passenger aircraft, which is already quite popular in itself, will find
even more enthusiasts in its new form than before, especially since it is one of the most economical commercial aircraft in the world.
Engine Mercedes-Benz I/ IIa 120 hp, wingspan 16.00 m, length 10.20 m, height 3.00 m, wing 32.00 nr, set-up weight 988 kg. load 437 kg, flying weight 1425 kg, wing loading 44.5 kg/m2 , speed 145 km/h, altitude 3500 m, climb time to 1000 m 10 min. run 170 m, run-out 150 in




