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Avia Rk.17

Field	Value
name	Rk.17
image	Letecké muzeum Kbely (39).jpg
caption	Rk.17 in Letecké muzeum Kbely, Prague
engine_type	9-cylinder air-cooled radial
manufacturer	Avia (Avia akciova spolecnost pro prumysl letecky), Prague
national_origin	Czechoslovakia

The Avia Rk.17 was a 9-cylinder radial aircraft engine, developed from the 7-cylinder Avia Rk.12, with a rated output of 270 kW (360 hp). The Rk.17 was one of Avia's own designs and was built in Czechoslovakia in the 1930s.

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. The Rk.17 was a 9-cylinder supercharged model, rated at 360 hp. It was a nine-cylinder version of their Rk.12.

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 heat treated silumin 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 eight piston rods.

Applications

Avia Ba.122
Letov Š-50

Specifications

**Ignition system: **Scintilla magnetos, automatic advance
Power output: maximum continuous at 2,200 rpm 300 kW (400 hp)
Power output: take-off at 2,020 rpm 330 kW (440 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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