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From: "Michael McMahon" <afm528@gmail.com>
To: "'Rotary motors in aircraft'" <flyrotary@lancaironline.net>
References: <list-4994644@logan.com>
In-Reply-To: <list-4994644@logan.com>
Subject: RE: [FlyRotary] Re: New impeller design
Date: Wed, 25 May 2011 20:18:03 -0700
Message-ID: <002e01cc1b53$877be120$9673a360$@gmail.com>
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I have a friend who is lead engineer at one of the dust collector =
companies, so I asked him about their impellers.  Here is his response:

" typically our fan wheels are used in the 3500-4500 rpm range.  We have =
tested to 5000rpm successfully, but have never failure tested to see =
where the max is.  They are dynamic 2-plane balanced to ISO 603 specs, =
the same as aircraft turbines, but this doesn=E2=80=99t reflect their =
strength under stress."

If this sparks any further questions, let me know and I'll pass them on. =
 He also told me in a separate email that their turbines are designed =
after jet turbines.

Mike


-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On =
Behalf Of Thomas Mann
Sent: Wednesday, May 25, 2011 5:42 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: New impeller design

A guy in my EAA Chapter owns Great Plains Aviation which specializes in =
VW conversions. They have a flywheel that doubles as a generator.

Of course that is a direct drive turning less than 3000 rpm but =
interesting just the same.=20


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