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Nozzles?
In a message dated 8/7/99 3:20:52 PM Pacific Daylight Time,
paul_suds@hotmail.com writes:
<< I intend on keeping it to a minimal volume to minimize air volume,
mass, ballast, increase strength, etc, etc. I've already found some DC
motors, 96-140vdc, 15 HP units, which should really make the unit fly.
Unfortunately, I'm looking at controllers, relays, etc, which you really
need for high output units like this, ie, not your typical trolling motor.
With those high voltages and currents, I can't afford a short. Also I'm
looking at a Kort nozzle configuration for the inlet. I haven't figured out
all the physics yet for an optimum high velocity, low pressure imbedded
nozzle, so I'm still doing the research on this. If I can find some good
engineering calcs on Kort nozzles, I'll be happy. >>
Have you thought about a jet ski nozzle? They might work fine for the high
output you want. But I also remember someone a year or so ago saying that
they work on very high rpm and don't work at depth because.... something
about air bubbles in the water under the jetski make them really kick the
power out... and there are no air bubbles at depth. As I recall, this person
was speaking from emperical experience. (Are you out there yet)
Gene Seus