First the AI, then the DG, then...?

David Lesher wrote:
snip

: A new design would have a AC inductor motor with a squirrel-cage
: motor, and a small internal inverter. But does anyone make them
: like that?

The DC-powered electric gyros are actually as you describe: a three
phase, 400Hz motor with an inverter. See www.chiefaircraft.com - aircraft
- flight instruments - gyros - RC Allen Electric Gyros.

The 400Hz models, of course, have no inverter.
--
Aaron Coolidge (N9376J)

Aaron Coolidge writes:

: A new design would have a AC inductor motor with a squirrel-cage
: motor, and a small internal inverter. But does anyone make them
: like that?

The DC-powered electric gyros are actually as you describe: a three
phase, 400Hz motor with an inverter. See www.chiefaircraft.com - aircraft
- flight instruments - gyros - RC Allen Electric Gyros.

Hmmm. Thanks..I was thinking something far higher in frequency{...as he tries
to recall the relationship between frequency, rotor poles and RPM...}

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On Tue, 02 Dec 2003 04:33:59 +0000, David Lesher wrote:


But a tiny DC motor is difficult; the rotor windings will want to
fling themselves out at high speeds. The brushes and commutator
will be near watchmaker-skill level.


Wow! I assumed they used a brushless motor.