Caspar C 29
| Caspar C 29 | |
|---|---|
|
|
| Type: | Reconnaissance plane |
| Design country: | |
| Manufacturer: | |
| First flight: |
1926 |
| Number of pieces: |
1 |
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The Caspar C 29 was a German floatplane built in the 1920s .
development
Work on the C 29 began as a result of a tender by the German Air Sports Association from February 1926 for the German Sea Flight Competition (DSW), which was to take place in July. Officially designated as a postal aircraft , the aircraft was designed as a maritime reconnaissance aircraft on behalf of the Reichswehr, which was operating in the background . As a special feature Caspar designer saw Ernst von Lößl for the Hispano-Suiza -Zwölfzylindermotor surface cooling of Rateau - slats before, which was inserted into the bottom wing, which consistently went under the fuselage and was connected to it by striving bucks. However, this type of cooling should not prove sufficient. During the factory tests carried out in Travemünde, which were carried out by the Berthold / Sido crew registered for the competition, the drive overheated so much that the aircraft caught fire and burned. That meant the end of a participation of the Caspar-Werke in the sea flight competition; another copy was no longer issued.
construction
The C 29 is a braced , single-handled double - decker in a composite construction . The fuselage with a square cross-section consists of a welded, fabric-covered tubular steel frame and tapers towards the stern. The front part is clad with duralumin sheets up to the end of the rear cabin . In front of the first cabin there is a sheet steel fire bulkhead.
The upper and lower wings in wood construction with the same span are staggered, designed in two parts and covered with plywood between the two box spars and otherwise covered with fabric. They are attached to braces that connect to the fuselage. They are connected to one another by two N-posts of great depth and braced by wire in one plane. A front cable runs between the upper N-struts and the front float connections. The fuel in the lower wing is conveyed to the engine by AM pumps. The tail unit is made of a plywood-clad and self-supporting wooden construction with a very large rudder .
As a floating mechanism, the C 29 has two flat-bottomed wooden floats keeled at the rear, which are connected to each other and to the hull with tubular steel struts.
Technical specifications
| Parameter | Data |
|---|---|
| crew | 2 |
| span | 13 m |
| length | 9.98 m |
| height | 4.18 m |
| Wing area | 47.44 m² |
| V shape | above 2.5 °, below 5 ° |
| Wing loading | 45 kg / m² |
| Power load | 5 kg / hp |
| Preparation mass | 1340 kg |
| Takeoff mass | 2000 kg |
| drive | a water-cooled twelve-cylinder - four stroke - V engine |
| Type | Hispano-Suiza 12 Jb |
| Take-off performance Combat and climb performance Nominal performance max. Continuous output |
465 PS (342 kW) 460 PS (338 kW) close to the ground 400 PS (294 kW) close to the ground 380 PS (279 kW) |
| Top speed | 190 km / h near the ground |
| Marching speed | 170 km / h |
| Landing speed | 65 km / h |
| Rise time | 4 min at 1000 m height 8.30 min at 2000 m height 14.30 m at 3000 m height |
| Service ceiling | 5500 m |
| Range | 700 km |
| Flight duration | 4 h |
literature
- Hans-Jürgen Becker: Seaplanes - flying boats, amphibians, float planes . In: German aviation . tape 21 . Bernard & Graefe, Bonn 1994, ISBN 3-7637-6106-3 , pp. 138/139 .
- Helmut Stützer: The German military aircraft 1919–1934 . E. S. Mittler & Sohn, Herford 1984, ISBN 3-8132-0184-8 .
- Bodo Dirschauer: Lübeck aviation history. Aircraft construction on the Priwall and in Lübeck from 1914 to 1934 . Steintor, Lübeck 1995, ISBN 3-9801506-1-5 , p. 91 .
Web links
Individual evidence
- ↑ Volker Koos: Aviation between the Baltic Sea and Breitling . Transpress, Berlin 1990, ISBN 3-344-00480-8 , pp. 70/71 .
- ↑ K. Grasmann (Ed.): Airplane type tables. DMZ 1925-1927 . 1977 (facsimile reprint of Deutsche Motor-Zeitschrift 1/1927).