Another right track ...
The Coanda machine seems also to have been followed by a similar effort by Caproni/Campini which had a piston engine driving a compressor, with combustion chambers downstream ...
But none of these was anything like a practical proposition like Sir Frank Whittle's, which was surely the first Jet Engine both to run and fly ...
Sorry, all, I completely forgot the He 138 and the German work, especially on axial-flow engines, which really pointed out the way to go. Whittle's centrifugal compressor, with its base in superchargers for piston engines, was a very good start for the first few years of military jets (and the Comet's engines), but my statement was W R O N GGGG ...
Last edited by Jig Peter; 19th Oct 2010 at 15:18.
Reason: Senior moment