BMW 132

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The BMW 132 was a nine-cylinder radial aircraft engine produced by BMW starting in 1933. The 132 was an improved version of the Pratt & Whitney Hornet engine. The 132 found widespread use in the transport role, remaining the primary powerplant of the Junkers Ju 52 for much of its life.

[edit] Specifications (BMW 132N)

General characteristics

• Type: 9-cylinder supercharged air-cooled radial engine
• Bore: 155.5 mm (6.1 in)
• Stroke: 162 mm (6.4 in)
• Displacement: 27.7 L (1,690 in³)
• Length: 1,256 mm (49.4 in)
• Diameter: 1,372 mm (54.0 in)
• Dry weight: 525 kg (1,157 lb)

Components

• Supercharger: Single-speed with direct fuel injection
• Cooling system: Air-cooled

Performance

• Power output:
  
  • 645 kW (865 hp) at sea level
  • 716 kW (960 hp) at 3,000 m (9,850 ft) at 2,450 rpm
• Specific power: 25.8 kW/L (0.57 hp/in³)
• Compression ratio: 6.93:1
• Specific fuel consumption: 0.33 kg/(kW·h) (0.54 lb/(hp·h))
• Power-to-weight ratio: 1.36 kW/kg (0.83 hp/lb)