Hirth HM 506
{{Short description|1930s German aircraft engine}}
| {{Infobox aircraft begin
|name = HM 506 |image = |caption = }}{{Infobox aircraft engine |type=Inline piston engine |manufacturer=Hirth Motoren GmbH |national origin= Germany |first run= |major applications=Bücker Bü 133 |number built = |program cost = |unit cost = |developed from = |developed into = |variants with their own articles = }} |
The Hirth HM 506 was a six-cylinder air-cooled inverted inline engine that was developed from the earlier four-cylinder HM 504.{{cite book |last=Gunston |first=Bill |title=World Encyclopaedia of Aero Engines |year=1989 |publisher=Patrick Stephens Limited |location=Cambridge, England |isbn=978-1-85260-163-8 |edition=2nd |page=77}} The HM 506 was a popular engine for light aircraft of the 1930s to 1940s and powered the Bücker Bü 133A model trainer. The engine featured a cast magnesium alloy crankcase.
Applications
- Bücker Bü 133 A
- Fieseler Fi 99
- Fieseler Fi 157 (UAV prototype)
- Fieseler Fi 158 (UAV prototype)
- Gotha Go 241
- Klemm Kl 35 B (D-ERLQ)
Specifications (HM 506A)
{{pistonspecs
|ref=Jane's All the World's Aircraft 1938,{{cite book |title= Jane's All the World's Aircraft 1938|last= Grey |first= C.G. |year=1972|publisher= David & Charles|location= London|isbn=0-7153-5734-4|pages=60d-61d}} Flugzeug-Typenbuch. Handbuch der deutschen Luftfahrt- und Zubehör-Industrie 1944{{cite book |last=Schneider |first=Helmut (Dipl.Ing.) |title=Flugzeug-Typenbuch. Handbuch der deutschen Luftfahrt- und Zubehör-Industrie 1944 |date=1944 |publisher=Herm. Beyer Verlag |location=Leipzig |isbn=381120484X |edition=Facsimile reprint 1986 |language=de |page=396}}
|type=6-cylinder air-cooled inverted inline
|bore={{cvt|105|mm|2}}
|stroke={{cvt|115|mm|2}}
|displacement={{cvt|5.976|L|cuin|2}}
|length={{cvt|1276|mm|1}}
|diameter=
|width={{cvt|490|mm|1}}
|height={{cvt|735|mm|1}}
|weight={{cvt|149|kg|0}} dry, unequipped
::::{{cvt|174|kg|0}} wet, equipped
|valvetrain=1 inlet and 1 exhaust valve per cylinder, operated by push-rods and rockers
|supercharger=
|turbocharger=
|fuelsystem=2x SUM 713/1 down draught carburetters, automatic mixture control and suitable for inverted flight.
|fueltype=80 Octane
|oilsystem=Fresh oil, metered for each cylinder. Rockers in oil bath.
|coolingsystem=air
|power=
:*{{cvt|160|PS|hp kW|0}} at 2,500 rpm (5 minutes) at sea level
:*{{cvt|145|PS|hp kW|0}} at 2,420 rpm (30 minutes) at sea level
:*{{cvt|130|PS|hp kW|0}} at 2,330 rpm (max. continuous / cruise) at sea level
|specpower={{cvt|26.8|PS/L|hp/cuin kW/L|2}}
|compression=6.2:1
|fuelcon=
|specfuelcon={{cvt|0.220|kg/PSh|lb/hph kg/kWh|3}} at max continuous
|oilcon={{cvt|0.003|kg/PSh|lb/hph kg/kWh|3}} at max continuous
|power/weight={{cvt|1.075|PS/kg|hp/lb kW/kg}}
- B.M.E.P.: {{cvt|9.65|atm|bar psi}}
}}
References
{{reflist}}
External links
- [http://www.hirth-engines.de Göbler-Hirthmotoren Company website no historical section]
- [http://www.luftfahrt-archiv-hafner.de no access - for sale of Hirth Flugmotoren manuals]
{{Hirth aeroengines}}
Category:Hirth aircraft engines
Category:Air-cooled aircraft piston engines
Category:1930s aircraft piston engines