Well, at 100 cc it's a bit big for this forum, but I think it's interesting that the latest in UAV engine technology is a reed valve diesel!
[link=http://www.cosworth.com/news_detail.php?id=66]Cosworth link[/link]
Cosworth’s AE1 engine attracted attention from key international players in the UAV sector at this year’s Farnborough International Air Show... Cosworth’s advanced single cylinder 100cc direct injection compression-ignition all-aluminium-alloy, port and reed-valve induction motor; designed to run on multi-fuels ranging from JP5, JP8, DF1 and DF2 specification – was of great interest at a show with significant presence of UAV and UAV related products. “It was a delight to see the positive response from so many exhibition visitors, a credit to the entire Cosworth AE engine programme team that has worked very hard to get the engine to the prototype stage in readiness for flight tests” said Ian Pocock, Director of Cosworth Engineering.
Just how big a DNU would we need for that?
