D.B.SriHridai
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Good evening to all...I am troubling with a doubt that how a propeller differs from a fan regarding jet engines..
Thus, whereas all the air taken in by a turbojet passes through the turbine (through the combustion chamber), in a turbofan some of that air bypasses the turbine. A turbofan thus can be thought of as a turbojet being used to drive a ducted fan, with both of those contributing to the thrust.
Since the efficiency of propulsion is a function of the relative airspeed of the exhaust to the surrounding air, propellers are most efficient for low speed, pure jets for high speeds, and ducted fans in the middle.
Thank yohWork Hard Play Hard said:I'm just making an observation here which may or may not be the answer. A fan is stationary and displacing or moving a medium within its environment. A propeller isn't stationary. Its used to create movement by using a medium to displace itself. Putting the funky designs aside, both work by using rotational force on a wing design to create pressure differentials. Again I could be wrong but I think when the medium is the source of the applied force fans and propellers become turbines and impellers. An electric wind generator is a wind turbine, not a wind propeller.