Hi,
Taking it that a controller works by chopping the DC into on and off
'vibrations', it occurred to me that there might be less need for power
during the time that a 2 blade prop is in line with the boat keel,
assuming that it is mounted in an aperture, or in line with the keel.
By adding a position sensor, the 'vibes' could be varied throughout the
360 degree rotation, to enable less power consumption.
The original thought was, to explain the idea better, that the prop
stops completely while in line with the keel, and therefore shielded by
it, then restarts after a small delay.
Because of the nature of electric, this gains an advantage that ICE can
probably never have. Assuming that it actually is an advantage!
Note that my thinking might be transposed, and it might be better to
have the prop speed up past the keel, I can't quite get my head around
that, other than it must be less efficient while shielded.
An extension of this idea would be to have a flywheel, and have the
power switched off while the prop approaches and passes the keel,
allowing momentum to carry it.
I have a gut feeling that with constant 360 degree supply, the prop
might speed up as it gets shielded. If so, this might be wasted energy,
as it would create more slippage as the prop emerges from the shielding.
John
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