Siemens-Halske_Sh_14 Knowpia

Sh 14
Type	Radial engine
Manufacturer	Siemens-Halske
First run	1928
Major applications	Focke-Wulf Fw 44

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 edit

Specifications (Bramo Sh 14A-4) edit

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)

References edit

^ 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.

Becker, E. Siemens Jahrbuch 1928: Flugzeugmotoren der Siemens & Halske AG, reproduced on bungartz.nl
http://www.oldengine.org/members/diesel/Duxford/germaer1.htm

[schneider-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.

[1]