RAF 4
| RAF 4 | |
|---|---|
 |
|
| Preserved RAF 4a engine at the Science Museum (London) | |
| Type | Piston inline aero engine |
| Manufacturer | Royal Aircraft Factory |
| Designed by | A.J. Rowledge |
| First run | December 1914 |
| Major applications | Royal Aircraft Factory R.E.8 |
| Number built | >3,600 |
| Developed from | RAF 1 |
The RAF 4 was a British air-cooled, V12 engine developed for aircraft use during World War I. Based on the eight–cylinder RAF 1 it was designed by the Royal Aircraft Factory but produced by the two British companies of Daimler and Siddeley-Deasy. The RAF 5 was a pusher version of the same engine.
In April 1918 a turbocharged experimental version of the RAF 4d was developed using a Rateau turbocharger, the engine being flown in the R.E.8 B738.
A preserved RAF 4a engine is on public display at the Science Museum (London).
Data from Lumsden
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