[PSUBS-MAILIST] Motor Pod Ventilation

[Joe Perkel]

I am considering a scheme for dealing with electric motor
cooling and would like input on the viability of the idea and any pros or cons
that I may be missing.
In looking at my SeeHund replica, note that the
torpedo/pod(s) length exceed needed battery capacity.  So the idea being that the aft ends of both
will house electric motors that are isolated from the battery compartments.
I’m thinking to ventilate these aft motor units into the aft
machinery space within the main hull. Incidentally, the hull diameter will be
42” and the torpedoes #14 pipe. This will leave a significant airspace around
these motor units allowing me to use fan cooled motor cases.  Each motor pod could be connected with vent
pipes for intake and output airflow, then the machinery space itself force
vented to the outside with  main
induction and exhaust vents.  All this
for continuous surface running of course. Submerged, the motor units would be
intermittent duty.
The centerline unit would be fully enclosed and not vented,
therefore not as attractive for continuous duty due to thermal constraints.
 
Joe
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