The Wolseley Aquarius I or A.R.7 was a British seven-cylinder, air-cooled radial aero engine that first ran in 1933, it was designed and built by Wolseley Motors. Intended for the military trainer aircraft market few were produced, as Wolseley withdrew from the aero engine market in 1936.
| Aquarius/A.R.7 | |
|---|---|
| |
| Type | Radial aero engine |
| Manufacturer | Wolseley Motors Limited |
| First run | 1933 |
| Major applications | Hawker Tomtit |
Applications edit
Specifications (A.R.7) edit
Data from Lumsden.[1]
General characteristics
- Type: 7-cylinder, single row, radial engine
- Bore: 4.188 in (106 mm)
- Stroke: 4.75 in (120 mm)
- Displacement: 458 cu in (7.5 L)
- Length: 36.4 in (925 mm)
- Diameter: 40.25 in (1,029 mm)
- Dry weight: 375 lb (170 kg)
Components
- Valvetrain: Overhead valve
- Fuel type: Petrol
- Cooling system: Air-cooled
- Reduction gear: Direct drive, left-hand tractor
Performance
- Power output: 170 hp (127 kW) at 2,475 rpm (maximum power)
- Specific power: 0.37 hp/cu in (16.9 kw/L)
- Compression ratio: 5.35:1
- Power-to-weight ratio: 0.45 hp/lb (0.75 kW/kg)
See also edit
Comparable engines
Related lists
References edit
Notes edit
- ^ Lumsden 2003, p. 232.
Bibliography edit
- Lumsden, Alec. British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. ISBN 1-85310-294-6.