Fiat A.70
1930s Italian piston aircraft engine
From Wikipedia, the free encyclopedia
The Fiat A.70 was an air cooled radial engine with seven cylinders developed by the Italian engineering company Fiat Aviazione in the 1930s. The engine powered a number of Italian light competition and prototype aircraft.
| A.70 | |
|---|---|
| Fiat A.70 | |
| Type | Air cooled 7-cylinder radial aircraft engine |
| National origin | Italy |
| Manufacturer | Fiat Aviazione |
| Designer | Tranquillo Zerbi |
| First run | 1934 |
Design and development
The A.70 was developed by Fiat Aviazione, part of Fiat S.p.A., as one of a number of related small radial engines.[1] It debuted at the Challenge International de Tourisme 1934, powering a number of the competitors.[2] The engine had seven cylinders of square design, with a bore and stroke of 115 mm (4.5 in), arranged around a crankshaft in a single row.[3] It was connected to the propeller by direct drive, often through a NACA cowling.[4]
Applications
Specifications (A.70S)
Data from NACA Technical Memorandum No.760.[3]
General characteristics
- Type: 7-cylinder, single row, air cooled radial engine
- Bore: 115 mm (4.5 in)
- Stroke: 115 mm (4.5 in)
- Displacement: 9.35 L (571 in3)
- Dry weight: 168 kg (370 lb)
Components
- Valvetrain: Two valves per cylinder
- Fuel type: Gasoline
- Cooling system: Air-cooled
- Reduction gear: Direct drive
Performance
- Power output: 200 hp (149 kW) at 2,300 rpm (max); 180 hp (134 kW) at 2,100 rpm (rated)
- Compression ratio: 5.8:1
- Power-to-weight ratio: 0.81 kg (1.8 lb) per hp
See also
Comparable engines
Related lists
