Hirth HM 504
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The Hirth HM 504 is a four-cylinder air-cooled inverted inline engine. The HM 504 was a popular engine for light aircraft of the 1930s-1940s, and it was used to power a number of Germany's trainer aircraft of World War II. The engine featured a cast magnesium alloy crankcase made of Elektron[1][2] The Hitachi Hatsukaze Model 11 was a Japanese licensed version.
Applications
- Arado Ar 79
- Bücker Bü 131
- Bücker Bü 181
- BŻ-1 GIL (helicopter)
- Klemm Kl 35
- Matra-Cantinieau MC-101 (helicopter)
- Morane-Saulnier MS.603
- Payen Arbalète
- Repülőgépgyár Levente II
Specifications (HM 504 A-2)
Data from Flugzeug-Typenbuch. Handbuch der deutschen Luftfahrt- und Zubehör-Industrie 1944,[3] Der Flugmotor. Bauteile und Baumuster[4]
General characteristics
- Type: 4-cylinder air-cooled inverted inline
- Bore: Template:Cvt
- Stroke: Template:Cvt
- Displacement: Template:Cvt
- Length: Template:Cvt
- Width: Template:Cvt
- Height: Template:Cvt
- Dry weight: Template:Cvt dry, unequipped
- Template:Cvt wet, equipped
Components
- Valvetrain: 1 inlet and 1 exhaust under-valve per cylinder driven by pushrods and rockers
- Fuel type: 80 Octane
- Oil system: dry sump, pressure feed with scavenge
- Cooling system: air-cooled
Performance
- Power output:
- Template:Cvt at 2,530 rpm (5 minutes) at sea level
- Template:Cvt at 2,450 rpm (30 minutes) at sea level
- Template:Cvt at 2,360 rpm (max. continuous / cruise) at sea level
- Specific power: Template:Cvt
- Compression ratio: 6.2:1
- Specific fuel consumption: Template:Cvt at max continuous
- Oil consumption: Template:Cvt at max continuous
- Power-to-weight ratio: Template:Cvt
- B.M.E.P.: Template:Cvt
See also
Related development
Comparable engines
- Alfa Romeo 110
- Argus As 8
- Blackburn Cirrus Minor
- de Havilland Gipsy Minor
- Elizalde Tigre IV
- Menasco Pirate
Related lists
References
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