Thread: Build Log MIG 31 FIREFOX scratchbuild
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Old Oct 06, 2012, 06:31 AM
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Da' Cajun
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Lake Charles, Louisiana
Joined Jun 2009
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The fans will spin in the same direction if set up like you have them in your drawing. No need for counter rotating rotors.

Right now you have a reduction gear drive train. Fans would never spin fast enough to make any appreciable thrust.

Long drive shafts tend to vibrate. High RPM's would only make it worse. ...and EDF's need high RPM.
Flexable boat shafts would be even worse.

This design would only be a Rube Goldberg exercise in futility. A very heavy exercise in futility.
If there was any advantages to this type of EDF, or any way it would possibly work, someone would have already done it.

I don't mean to sound so discouraging. On the contrary, you've build a really cool jet here. Don't waste that effort chasing a power system that will inevitably end up in failure.
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