SIAI p.9
| SIAI p.9 | |
|---|---|
|
|
| Type: | Flying boat |
| Design country: | |
| Manufacturer: | |
| First flight: |
1918 |
| Number of pieces: |
few copies |
The SIAI (Savoia) S.9 was an Italian flying boat , which was manufactured in 1918 by Societa Idrovolanti Alta Italia and used as a reconnaissance aircraft. It is said that French engineers were also involved in the development. The S.9 was manufactured under license in France under the name CAMS C-9. A series of crashes made the aircraft less popular.
history
The S.9 emerged from the experience with the S.8, but the machine was not successful. Two S.9s that had been delivered were lost during the transfer flight to Finland.
Both flying boats started on September 7, 1920 in Sesto Calende at the southern end of Lake Maggiore , where they had been manufactured. The first machine was manned by the 30-year-old pilot Väinö Werner Mikkola and the experienced 26-year-old navigator Oberleutnant Äly Durchman, Carl Erik Leijer flew in the second Savoia page 9 with the Italian on-board mechanic Carlo Riva. Sudden damage to the propellers gave neither crew a chance: the propellers disintegrated into their components during the flight, causing massive damage to the sensitive structure, and a crash was unavoidable.
Mikkola and Durchman rushed south of Todi in the Grisons from Gliemsgletscher, the wreckage and the remains of the crew were found only about a month later. The «Savoia», driven by Leijer and plagued by engine misfires, fell off Zollikon in Lake Zurich .
The reason for the crashes were poorly glued propellers, which disassembled into their components during the flight. The investigation report of the Zurich Public Prosecutor's Office of February 8, 1922, accessible in the Federal Archives in Bern, came to the conclusion that “the glue on the propeller blades was very poor”. Air Office specialists attributed this to the use of two different types of glue. This disassembled the propeller into its individual parts in flight. The Aviation Office did not rule out this possibility entirely in its report, but also brought gross negligence on the part of the Savoia workers into play.
Technical specifications
| Parameter | Data |
|---|---|
| crew | 2 |
| length | 10 m |
| span | 13.20 m |
| height | 3.9 m |
| Wing area | 48 m² |
| Takeoff mass | 1740 kg |
| drive | a Fiat A 12bis engine with 300 HP (221 kW) |
| Cruising speed | 140 km / h |
| Top speed | 170 km / h |
| Range | 560 km |
| Armament | a 7.7 mm MG 50 kg bombs under the wings |
literature
- Kalevi Keskinen, Kyösti Partonen, Kari Stenman: Suomen Ilmavoimat I 1918-27 , 2005. ISBN 952-99432-2-9 .
- Kalevi Keskinen, Kari Stenman, Klaus Niska: Suomen ilmavoimien lentokoneet 1918–1939 , Tietoteos, 1976.
Web links
Individual evidence
- ^ Bureau of Aircraft Accidents Archives
- ↑ ilmakilta.info (Finnish)
- ↑ Hans-Heiri Stapfer : Drama about Zollikon , in: Zolliker Jahrheft 2020, Zollikon 2020