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Avia Rk.12

Field	Value
name	Rk.12
engine_type	Seven-cylinder air-cooled radial
manufacturer	Avia (Avia akciova spolecnost pro prumysl letecky), Prague
national_origin	Czechoslovakia

One of Avia's own designs, the 1930s Avia Rk.12 was a seven-cylinder radial engine with a rated output of 150 kW (200 hp), built in Czechoslovakia.

Design and development

As well as producing aircraft and building Hispano-Suiza and Lorraine aero-engines under licence, Avia also designed and built their radial engines. Their Rk.12 was a seven-cylinder supercharged model, rated at 200 hp.

It was a conventional air-cooled radial: nitrided steel barrels with integral fins were screwed into heat-treated Y alloy heads. The pistons were also of heat-treated Y alloy. The crankcase was cast from aluminium alloy, with some minor parts using magnesium alloy. The single-throw, two-piece crankshaft was linked to the pistons with an I-section Y alloy master rod, with a single-piece big end, which carried the other six piston rods.

Applications

Avia 51

Specifications

**Ignition system: **Scintilla magnetos, automatic advance
Power output: maximum continuous 195 kW (260 hp)
Power output: take-off 210 kW (280 hp) |power/weight=

References

Grey, C.G.. (1972). "Jane's All the World's Aircraft 1938". David & Charles.

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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