Siemens-Halske Sh 14

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Sh 14
Siemens Halske Sh 14.jpg
Preserved Sh 14
Type Radial engine
Manufacturer Siemens-Halske
First run 1928

The Siemens-Halske Sh 14 was a seven-cylinder air-cooled radial engine for aircraft produced in Germany in the 1920s and 1930s. First run in 1928, it was rated at 93 kW (125 hp).

Applications[]

Specifications (Bramo Sh 14A-4)[]

Data from Flugzeug-Typenbuch. Handbuch der deutschen Luftfahrt- und Zubehör-Industrie 1944[1]

General characteristics

  • Type: seven-cylinder air-cooled radial engine
  • Bore: 108 mm (4.25 in)
  • Stroke: 120 mm (4.72 in)
  • Displacement: 7.84 l (478.4 cu in)
  • Length: 1,008 mm (39.69 in)
  • Diameter: 936 mm (36.85 in)
  • Dry weight: 135 kg (298 lb)

Components

  • Valvetrain: 1 inlet and 1 exhaust valve per cylinder operated by pushrods and rockers
  • Fuel system: 1x SUM 438a or 439a carburetor
  • Fuel type: 80 octane
  • Oil system: pressure feed at 2–4 atm (29–59 psi; 2.0–4.1 bar), with dry sump
  • Cooling system: air

Performance

  • Power output:
  • 160 PS (158 hp; 118 kW) at 2,200 rpm (5 minutes) at sea level
  • 145 PS (143 hp; 107 kW) at 2,140 rpm (30 minutes) at sea level
  • 128 PS (126 hp; 94 kW) at 2,050 rpm (max. continuous / cruise) at sea level
  • Specific power: 20.4 PS/l (0.33 hp/cu in; 15.00 kW/l)
  • Compression ratio: 6.0:1
  • Specific fuel consumption: 0.244 kg/PSh (0.545 lb/(hp⋅h); 0.332 kg/kWh) at max continuous
  • Oil consumption: 0.003–0.012 kg/PSh (0.007–0.027 lb/(hp⋅h); 0.004–0.016 kg/kWh) at max continuous
  • Power-to-weight ratio: 1.19 PS/kg (0.53 hp/lb; 0.88 kW/kg) at cruise
  • B.M.E.P.: 5.95 atm (6.03 bar; 87.4 psi)

See also[]

References[]

  1. ^ Schneider, Helmut (Dipl.Ing.) (1944). Flugzeug-Typenbuch. Handbuch der deutschen Luftfahrt- und Zubehör-Industrie 1944 (in German) (Facsimile reprint 1986 ed.). Leipzig: Herm. Beyer Verlag. p. 376. ISBN 381120484X.
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