Mailing List flyrotary@lancaironline.net Message #43030
From: George Lendich <lendich@optusnet.com.au>
Subject: combined starter alternator
Date: Wed, 4 Jun 2008 08:28:02 +1000
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Directed to the electronic wiz types.
 
This is not a development issue but an educational issue as I would like to understand the issues associated with developing a starter alternator.
 
Personally I believe a combined starter, alternator, flywheel, damper, timing wheel and pick up would be a great advantage (we live to dream).
Some systems use the combined starter alternator attached to the gear box shaft just, between the motor and the gearbox fluid damper. 
 
I believe from talking to Bill Jepson that getting sufficient power from the current winding used is problematic but that there had been major improvements in this field. Also reading a little on the Internet ( if I understand it correctly) an alternator is AC ( alternating current) and a generator is DC. As Batteries are DC and starters are DC, we would need to use a DC generator winding in the starter generator (someone tell if I'm wrong here).
 
Of course nothing is as simple as this, so I'm keen to understand the issues associated - from anyone out there in the electronics world!?
George (down under).
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