Hi
Alan! I?m doing some investigative work into ROV?s and surface autonomous
vehicles at the moment? and I?m contemplating designing my own motors for the
surface autonomous boat?
Ive
also been into building RC planes for quite a while? Brushless RC motors =
what is exactly needed?
The
magnets are mounted in the external stator and inside the motor is 3 coils
mounted at 120 degree?s apart? and a controller works out which of the 3
phases to energize to make the motor rotate at the demanded RPM?
This
design means that an insulator/isolator can exist between the stator and the
coils(as long as there is a slight clearance for oil or possibly even sea
water to cool the motor? if the coils and magnets can be sufficiently
insulated/corrosion proofed
Only
the magnets/magnet housing/bearings and other drive components need really be
waterproofed! J
From:
owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org] On Behalf Of Alan
James
Sent: Friday, 3 September 2010 12:19 PM
To:
personal_submersibles@psubs.org
Subject: [PSUBS-MAILIST] underwater
thruster
Came across these
underwater thrusters.
They are "rim
driven" with one moving part. It looks like the kort nozzle or
duct
is the stator &
the propeller is the rotor. They are rated for any
depth.
Am awaiting a
price, got an idea they aren't cheap.