Otto A.G.O. 50 hp
| Industry | Aircraft engine manufacturing |
|---|---|
| Founded | 1911 |
| Founder | Gustav Otto |
| Headquarters | Germany |
The Otto A.G.O. 50 hp aircraft engine, dating back to 1911, was a four-cylinder inline powerplant with water cooling, manufactured by the German firm Gustav Otto Flugmaschinenwerke.
Design and development


Conceived by Hans Geisenhof in 1911 at the Gustav Otto Flugmaschinenwerke, the Otto A.G.O. (Aeromotor Gustav Otto) 50 hp featured a bore and stroke measuring 110 mm × 150 mm (4.33 in × 5.91 in) and delivered approximately 50 hp (37 kW) at 1,200 rpm.
Each cylinder was individually cast from iron and subsequently machined before being assembled into a unified block. The cylinders were connected at their cooling jackets using flanges secured by bolts. The engine employed two side valves per cylinder, actuated by a camshaft positioned on the left side of the block and driven through spur gears linked to the crankshaft.
Fuel was supplied to all four cylinders via a single carburettor. Each cylinder contained one spark plug located above the inlet valve, with the magneto mounted on the control side of the engine and powered by an intermediate spur gear connected to the crankshaft.
The crankshaft was supported by two outer plain bearings and an intermediate bearing, complemented by two thrust ball bearings at the propeller end. Lubrication was maintained through a pressure-fed system, where an oil pump supplied lubricant to the crankshaft bearings.
Applications
- Otto Renn-Doppeldecker (1912) racing biplane
Specifications
See also
Citations
Works cited
- Angle, Glenn Dale (1921). Airplane Engine Encyclopedia: An Alphabetical Compilation of Worldwide Airplane Engine Data. Otterbein Press. pp. 372-373. OL 23525261M.
- Quittner, Victor (May 1912). "Die Flugmotorern auf der "ALA"". Der Oelmotor (in Deutsch). I. Jahrgang 1912/13 (2). Berlin: Verlag für Fachliteratur G.m.b.H.: 96–101. OCLC 2449244.
- R. B. (1912). "Von den Otto-Flugzeugwerken in München". Deutsche Luftfahrt, Jahrgang 1912 (in Deutsch). 16: 27–29. OCLC 29889214.
Further reading
- Staff writer(s) (August 9, 1911). "Gustav Otto Flugmaschinen-Werke München (advertisement)". Illustrirte Mittheilungen des Oberrheinischen Vereins für Luftschiffahrt, Jahrgang 1911 (in Deutsch). 15 (16): 38. OCLC 19872940.