Savoia-Marchetti p.71
| Savoia-Marchetti p.71 | |
|---|---|
|
|
| Type: | Passenger plane |
| Design country: | |
| Manufacturer: | |
| First flight: |
1930 |
| Number of pieces: |
7th |
The Savoia-Marchetti S.71 was a conventional transport and passenger aircraft with three engines that was developed by SIAI from 1930. The machine was tested from 1930 to 1931 and then used by scheduled airlines.
history
Società Idrovolanti Alta Italia (SIAI) presented a new concept for a conventional transport and passenger aircraft with three engines in 1930. Unlike its predecessor amphibious aircraft, the S.71 was a transport and passenger aircraft that could only land on land. With three Walter Castor seven-cylinder engines, each with 240 hp, it was able to offer great protection against falling and offered space for up to 10 passengers. The high-decker was completed in late 1930 and tested until January 1931. The pilot Sandro Passaleva immediately set a new altitude record of 6450 m with the S.71. After the somewhat weak Walter Castor seven-cylinder engines were replaced by three Italian Piaggio Stella VII radial engines with 370 hp each, the machine was used for scheduled flights from June 1931. The airline Società Aerea Mediterranea (SAM) used the S.71 on the Rome - Brindisi route , later Ala Littoria bought planes for the Rome - Thessaloniki route . The machines were in use until the end of 1937 and were then replaced by the types SM.73 and SM.75 . The discontinued S.71s were sold to East Africa in 1938, where they continued to be used as a passenger and mail plane.
construction
The cell structure and the planking of the S.71 was probably made of metal. The machine was a three-engine high-wing aircraft with good-natured flight behavior, which was therefore suitable for passenger flights. The prototype of the S.71 was built with three Walter Castor seven-cylinder engines with 240 hp each, which were exchanged in series for three Piaggio Stella VII radial engines with 370 hp each from Italian production. The aircraft had a crew of three (a pilot, a copilot and an on-board mechanic) and could accommodate up to ten passengers; However, for reasons of comfort, scheduled services were only flown with eight passengers. The S.71 had an actual summit height of 6450 m, but SIAI reduced it to 5700 m for flight operations.
Technical specifications
| Parameter | Data |
|---|---|
| crew | 3 |
| Passengers | Max. 10 |
| length | 14.00 m |
| span | 21.2 m |
| height | 4.10 m |
| Wing area | 60 m² |
| Empty mass | 2900 kg |
| Takeoff mass | 4600 kg |
| drive | 3 × radial engine Piaggio Stella VII with 370 HP (272 kW) each |
| Cruising speed | unknown |
| Top speed | 235 km / h |
| Service ceiling | approx. 6000 m |
| Range | 1600 km |
literature
- Michael JH Taylor: Jane's Encyclopedia of Aviation . Studio Editions, London 1989
- The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985). Orbis Publishing.
