Argus 115 hp

Argus Motoren

Industry	Aircraft engines
Founded	1913 (1913)
Headquarters	Germany
Products	Aircraft engines

Template:Infobox aero engine

The Argus 115 hp aircraft powerplant, introduced around 1913 by the German manufacturer Argus Motoren, was a water-cooled inline six-cylinder piston engine.

Design and development

Derived from the preceding Argus 110 hp model of 1912, the Argus 115 hp featured an enlarged bore of 130 mm (5.12 in) paired with a stroke measuring 130 mm (5.12 in). By early 1913, this engine was already available and was reported to produce up to 115 hp (86 kW) at 1,400 rpm. Its typical operating speed was noted as approximately 1,350 rpm.

Beyond the increased bore size, a notable enhancement over the Argus 110 hp was the addition of a second magneto. This upgrade necessitated changes to the external component layout: the water pump was repositioned to the left side of the engine and directly coupled with one magneto. The second magneto was driven through spur gears connected to the crankshaft and situated on the engine’s right side. Additionally, the oil pump was relocated to a separate mounting on the left side of the engine case and was driven via spur gears from the camshaft at the propeller end.

During testing conducted by the Deutsche Versuchsanstalt für Luftfahrt in Berlin-Adlershof between November 15 and 17, 1913, this powerplant demonstrated an output near 110 hp (82 kW) at 1,330 rpm.

Although some sources refer to this model as the 105/115 hp Argus or simply as the 115 hp Argus, contemporary documentation often labels it as a '100 hp Argus' engine. This nomenclature sometimes causes confusion with other Argus engines such as the four-cylinder Argus As I rated at 100 hp or the Argus 110 hp variant.

The earliest records of this engine’s application appear in accounts of the 'Prinz-Heinrich-Flug' aviation competition held from May 10 to May 17, 1913. Two aircraft powered by this six-cylinder Argus engine—characterized by a bore and stroke of 130 mm—participated: a Jeannin-Taube piloted by Lt. Coerper and an L.V.G.-biplane flown by Lt. Carganico.

Applications

• Jeannin Stahltaube (1913)
• L.V.G. biplane (1913)
• Sikorsky Ilya Muromets No. 107, equipped with a combination of two 200 hp (150 kW) Salmson 2M7 engines alongside two Argus 115 hp powerplants.

Specifications

File:Argus 115 hp aircraft engine, exhaust side.png

Argus 115 hp aircraft engine, exhaust side