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Excellent concept, Charles
Certainly doesn't sound like any reason it couldn't be
make to work - however, one thing to keep in mind. Ernest (the Impeller
Geek {:>)), is using a one-off PSRU which provides sufficient space for his
impeller to be incorporated between engine and PSRU. The most common PSRU
used is the RWS PSRU and I am fairly certain there is insufficient space for
such an impeller.
Now if we could convince Tracy Crook to
redesign his PSRU to accommodate this concept - well, then I think it becomes a
lot more viable practical concept. But, I don't see a PSRU design
happening until/unless Ernest can show that his concept provides benefits worth
the investment.
But, again a great ideal - speak up more, lurk
less.
Ed
Sent: Wednesday, May 25, 2011 8:03 AM
Subject: [FlyRotary] Re: New impeller design
Hi,
All
Just
thinking aloud here, I visited a local foundry yesterday to collect some feet
for a bath-tub which I had made, and the owner was showing me around his shop ….
One thing which caught my eye was an impeller he is currently building a mould
for – it is for pumping air into one of his furnaces, and this got me thinking
on the way home ….
If
an impeller were to be cast for this air-induction/super-charging application,
and was tied-in to the e-shaft (key-way or similar) would it work to have a
suitable magnet cast-in to the periphery of the impeller, so that two coils
could be mounted, 180 degrees apart, to provide ‘magneto-type’ spark to one set
of plugs – one coil per rotor at 180* for a 2-rotor, and 120* for a 3-rotor –
this sounds, to me, so simple that I am surprised nobody has done it before –
how good would it be to have a completely battery-independent ignition system
for amateur-built aircraft ? … maybe I should shaddup, & return to lurking
…
Charles
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