Focke-Wulf A 33
Focke-Wulf A 33 Sparrowhawk | |
---|---|
The first A 33 with the serial number 91 |
|
Type: | Airliner |
Design country: | |
Manufacturer: | |
First flight: |
1930 |
Commissioning: |
May 1930 |
Production time: |
1930/1931 |
Number of pieces: |
3 |
The Focke-Wulf A 33 Sperber is a German airliner built in the early 1930s by Focke-Wulf-Flugzeugbau AG in Bremen .
development
The A 33 was designed in 1930 at Focke-Wulf by the head of the construction department Paul Klages on his own responsibility and without an official building contract. A Czechoslovak Mars engine from Walter served as the drive . The target group was made up of rather smaller airlines , where they were to be used as an “ air taxi ”, ie as a business and touring aircraft . The need of the companies still struggling with the consequences of the global economic crisis was low, so that only three copies of the aircraft with the serial numbers 91, 97 and 115 were built, which between May 1930 and August 1931 as D–1851
, D–1931
and D–2153
for the Norddeutsche Luftverkehrs AG , the Luftverkehrs GmbH in Rüstringen and the building authority Hamburg were approved. The latter was used as a photo and survey aircraft . The whereabouts of the three planes is unknown.
construction
The A 33 is a cantilevered shoulder- wing monoplane with a composite construction . The fuselage and tail unit consist of a tubular steel frame covered with fabric , the engine area of the bow is planked with sheet metal. The continuous wing has a zanonia shape , the rigid chassis consists of the main wheels not connected to an axle and a grinding spur at the rear.
Technical specifications
Parameter | Data |
---|---|
crew | 1 |
Passengers | 3 |
length | 9.65 m |
span | 12.00 m |
height | 3.00 m |
Wing area | 22.00 m² |
Wing extension | 6.5 |
Preparation mass | 670 kg |
Payload | 450 kg |
payload | 250 kg |
Takeoff mass | 1120 kg |
drive | an air-cooled nine-cylinder - radial engine |
Type | Walter Mars |
Starting power rated power |
155 PS (114 kW) at 1800 rpm 145 PS (107 kW) at 1750 rpm |
Top speed | 165 km / h |
Cruising speed | 145 km / h |
Landing speed | 75 km / h |
Rise time | 8.0 min at 1000 m altitude |
Service ceiling | 3000 m |
Range | 500-600 km |
literature
- Manfred Griehl: Focke-Wulf since 1925 . Motorbuch, Stuttgart 2009, ISBN 978-3-613-03006-0 , p. 27 .
- Karl-Dieter Seifert: German air traffic 1926–1945 - on the way to world traffic . In: German aviation . tape 28 . Bernard & Graefe, Bonn 1999, ISBN 3-7637-6118-7 , pp. 301/302 .
- Peter All-Fernandez (ed.): Aircraft from A to Z . tape 2 . Bernard & Graefe, Koblenz 1988, ISBN 3-7637-5905-0 , p. 241 .
Web links
Individual evidence
- ^ René Scheer: AGO aircraft factories. From the lattice hull to the Me 262 . Dr. Ziethen, Oschersleben 2014, ISBN 978-3-86289-078-1 , p. 42 .
- ^ Karl Ries: Research on the German aviation role. Part 1: 1919-1934 . Dieter Hoffmann, Mainz 1977, ISBN 3-87341-022-2 , p. 1134, 139 and 153 .