Raab-Katzenstein class 1
| Raab-Katzenstein class 1 | |
|---|---|
|
|
| Type: | Aerobatic plane |
| Design country: | |
| Manufacturer: | |
| First flight: |
January 16, 1926 |
| Commissioning: |
March 25, 1926 |
| Number of pieces: |
45 |
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The Raab-Katzenstein Kl 1 Schwalbe was a training and aerobatic aircraft manufactured by the Raab-Katzenstein-Flugzeugwerke .
Construction and production
The swallow can essentially be viewed as an improved version of the buzzard of Dietrich-Gobiet aircraft construction, which the chief engineer Paul John Hall had developed in his last work at Dietrich-Gobiet. This led to a protracted, but later unsuccessful, lawsuit by the ex-company relating to class 1 swallow. The machine had a one-piece wooden upper wing and N-shaped handles between the two wings. The fuselage consisted of a covered tubular steel frame.
The first flight of the machine, equipped with a 71 kW seven-cylinder radial engine Siemens Sh 11 , took place on January 16, 1926 by Antonius Raab . The type certification took place on March 25, 1926 and intensive advertising quickly led to sales success. In July 1926, 120 workers were already working on the production of the machine. From 1926 a total of 45 pieces were produced in Kassel: 26 Kl 1a, four Kl 1b and 15 Kl 1c.
variants
- Class 1a
- Basic design
- Kl 1b
- Improved design, partly equipped with Siemens Sh 12 .
- Kl 1c
- with Sh 12 or Anzani engines. The aircraft became famous with the registration D-1212. With her, Gerhard Fieseler achieved a new record in inverted flight and the German aerobatic championship in 1928. Other famous pilots who flew with this type were Luise Hoffmann (Werk-Nr. 70, D-1588) and Vera von Bissing (D-1742). In 2006 the German Post issued a postage stamp about the aircraft exhibited at ILA 1928.
- Kl 1d, 1e, 1f, 1g
- drafts only
Technical specifications
| Parameter | Data (Kl 1) | Data (class 1a) | Data (Kl 1b) | Data (Kl 1c) |
|---|---|---|---|---|
| crew | 1 + 1 | |||
| length | 6.50 | 6.25 m | 6.23 m | 6.13 m |
| Span (top) | 8.00 m | |||
| Span (below) | 7.00 m | 6.84 m | ||
| height | 2.60 m | 2.55 m | 2.50 m | |
| Wing area | 18.70 m² | 17.00 m² | 16.90 m² | |
| Wing loading | 35.8 kg / m² | 41.8 kg / m² | 44.0 kg / m² (34.3 kg / m² for aerobatics) |
47.3 kg / m² (34.3 kg / m² for aerobatics) |
| Power load | 8.4 kg / hp | 7.4 kg / hp | 7.8 kg / PS (6.0 kg / PS for aerobatics) |
6.4 kg / PS (5.5 kg / PS for aerobatics) |
| Empty mass | 420 kg | 470 kg | 460 kg | 485 kg |
| Payload | 250 kg | 240 kg | 285 kg | 260 kg (315 kg when traveling) |
| Max. Takeoff mass | 670 kg | 710 kg | 745 kg | 745 kg (800 kg when traveling) |
| Engine | a Sh 5 | a Sh 11 | a Cirrus Mark II | |
| Starting power nominal power continuous power |
85 PS (63 kW) 80 PS (59 kW) on the ground 76 PS (56 kW) |
96 PS (71 kW) 86 PS (63 kW) 84 PS (62 kW) close to the ground |
125 PS (92 kW) 108 PS (79 kW) 80 PS (59 kW) |
|
| Fuel volume | approx. 120 l | 100 l | 130 l | |
| Top speed close to the ground |
150 km / h | 152 km / h | 160 km / h | 165 km / h |
| Climbing time to an altitude of 1000 m |
k. A. | 9 min | 6.5 min | |
| Max. Radius of action | approx. 500 km | approx. 560 km | approx. 600 km | |
| Summit height | 3500 m | 4000 m | ||
literature
- Holger Steinle: Aircraft with History , 2009, ISBN 3-86852-206-9
- Bruno Lange: Type Handbook of German Aviation Technology (Die deutsche Luftfahrt Volume 9), Bernard & Graefe Verlag Koblenz, 1986, ISBN 3-7637-5284-6 , p. 230
