Walter Scolar

The Walter Scolar was a Czechoslovak nine-cylinder, air-cooled radial engine for powering light aircraft that first ran in 1936. With a displacement of 8 litres (490 cu in), it produced 132 kW (180 hp) at 2,500 rpm.^[1]

Scolar
Walter Scolar
Type	Radial aero engine
National origin	Czechoslovakia
Manufacturer	Walter Aircraft Engines
First run	1936

Applications

• Beneš-Mráz Beta-Scolar

Engines on display

Preserved examples of the Walter Skolar engine are on display at the following museums:

• Muzeum Letectva, Košice
• Prague Aviation Museum, Kbely

Specifications (Scolar)

Data from Kosice Air Museum^[2]

General characteristics

• Type: 9-cylinder radial piston engine
• Bore: 105 mm (4.13 in)
• Stroke: 100 mm (3.94 in)
• Displacement: 7.8 L (488 cu in)
• Dry weight: 155 kg (342 lb)

Components

• Valvetrain: One intake and one exhaust valve per cylinder
• Fuel system: Carburettor
• Fuel type: Petrol
• Cooling system: Air-cooled

Performance

• Power output: 132 kW (180 hp) at 2,500 rpm
• Compression ratio: 5.4:1
• Power-to-weight ratio: 0.85 kW/kg (0.52 hp/lb)

See also

Comparable engines

• Alvis Leonides
• Siemens-Halske Sh 12
• Wolseley Aries

Related lists

• List of aircraft engines