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Question: Which is more efficient? impellers or bladed engines?

(Posted by: Brian I on 2007-09-12 08:09:49)

I am trying to figure out which machine was more efficient. A centripetal impeller or a bladed jet engine type of thinger. If I crank both of them one revolution, which would put out more air/ water/ pop, etc. Thanks!!

Posted by: muddypuppyuk on 2007-09-12, 13:04:33

It really depends on the angles of attack or blade pitch, and efficiency of design. Either one could be best, not knowing these variables.......... ..

Posted by: eric d on 2007-09-12, 11:13:27

If you are asking which works better, a jet or a prop. I'd have to say jet. Part of the reasoning is that a prop is essentially unbounded, while a jet is a confined area. To build pressure, a confined area is much more efficient.