Avia Rk.12

Rk.12
Type 7-cylinder air-cooled radial
National origin Czechoslovakia
Manufacturer Avia (Avia akciova spolecnost pro prumysl letecky), Prague




One of Avia's own designs, the 1930s Avia Rk.12 was a 7-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 own radial engines. Their Rk.12 was a 7-cylinder supercharged model, rated at 200 hp.[1]

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.[1]

Applications

Avia 51

Specifications

Data from Jane's All the World's Aircraft 1938[1]

General characteristics

Components

Performance


References

  1. 1.0 1.1 1.2 Grey, C.G. (1972). Jane's All the World's Aircraft 1938. London: David & Charles. p. 31d. ISBN 0-7153-5734-4.