| Hirth HM 504 | |
|---|---|
| |
| Hirth HM 504 on display at the Flugausstellung Hermeskeil | |
| Type | Inline piston engine |
| National origin | Germany |
| Manufacturer | Hirth-Motoren GmbH, Stuttgart-Zuffenhausen |
| Major applications | Bücker Bü 131 |
| Developed into | Hitachi Hatsukaze |
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.
- ^ Gunston, Bill (1989). World Encyclopaedia of Aero Engines (2nd ed.). Cambridge, England: Patrick Stephens Limited. p. 77. ISBN 978-1-85260-163-8.
- ^ "Werkstoff-Volumenanteile der 'AR' 79" [Materials proportions by volume of the AR 79 (advertising back matter) ]. Flugsport (in German). 31 (8). Frankfurt/Main: 229 [pdf 32]. 12 April 1939.