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BMW 132
BMW took over the license for manufacturing air-cooled radial engines from US aircraft manufacturer Pratt & Whitney Aircraft Company on 3 January 1928. The nine-cylinder model Pratt & Whitney Hornet was initially manufactured virtually unchanged under the designation BMW Hornet. Soon BMW embarked on its own development. The result was the BMW 132 that went into production in 1933, which was essentially an improved version of the Hornet engine. A number of different versions were built. Aside from the carburettor designs used mainly in civilian aircraft, versions with direct fuel injection were manufactured for the German Luftwaffe. The engines had a displacement of 27.7 liters and generated up to 1,200 PS (880 kW), depending on model.

The 132 found widespread use in the transport role, remaining the primary powerplant of the Junkers Ju 52 for much of its life, turning the BMW 132 into one of the most important aeroengines for civilian aircraft during the 1930s.

Numerous pioneering flights were undertaken with the BMW 132. The most impressive was the first direct flight from Berlin to New York in a Fw 200 S-1 Condor equipped with four BMW 132 engines. It covered the distance to New York in 24 hours and 57 minutes on 10 August 1938.

Specifications for BMW 132N
Manufacturer: BMW
Type: 9-cylinder single-row 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)
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)
Specifications for BMW 132 Dc
Manufacturer: BMW
Type: 9-cylinder single-row supercharged air-cooled radial engine
Bore: 155.6 mm (6 1?8 in)
Stroke: 161.9 mm (6 3?8 in)
Displacement: 27.7 l (1,690 in³)
Length: 1,411 mm (55.55 in)
Diameter: 1,380 mm (54.33 in)
Dry weight: 525 kg (1,157 lb)
Power output:
– 589 kW (789 hp) for takeoff
– 581 kW (779 hp) at 2,290 rpm at 2,900 m (9,515 ft)
Specific power: 21.26 kW/l (0.47 hp/in³)
Compression ratio: 6.5:1
Specific fuel consumption: 322 g/(kW•h) (0.53 lb/(hp•h))
Oil consumption: 8-11 g/(kW•h) (0.21-0.28 oz/(hp•h))
Power-to-weight ratio: 1.12 kW/kg (0.68 hp/lb)

Components:
Valvetrain: Two overhead valves per cylinder
Supercharger: Single-speed centrifugal type supercharger
Fuel system: Hobson carburetor
Fuel type: 87 octane rating gasoline
Cooling system: Air-cooled
Reduction gear: Farman epicyclic gearing, 1.61:1

Applications:
Arado Ar 196
Arado Ar 197
Blohm & Voss Ha 140
Blohm & Voss BV 141
Heinkel He 114
   Heinkel He 115
Henschel Hs 123
Henschel Hs 124V2
Junkers Ju 52
Junkers Ju 86
Sources:
Wikipedia - BMW 132
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