X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail14.syd.optusnet.com.au ([211.29.132.195] verified) by logan.com (CommuniGate Pro SMTP 5.2.3) with ESMTPS id 2952062 for flyrotary@lancaironline.net; Tue, 03 Jun 2008 18:28:47 -0400 Received-SPF: pass receiver=logan.com; client-ip=211.29.132.195; envelope-from=lendich@optusnet.com.au Received: from george (d58-104-215-70.dsl.nsw.optusnet.com.au [58.104.215.70]) by mail14.syd.optusnet.com.au (8.13.1/8.13.1) with SMTP id m53MRxWs008773 for ; Wed, 4 Jun 2008 08:28:01 +1000 Message-ID: <003901c8c5c9$16eeb460$6400a8c0@george> From: "George Lendich" To: "Rotary motors in aircraft" Subject: combined starter alternator Date: Wed, 4 Jun 2008 08:28:02 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0036_01C8C61C.E732CFF0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 X-Antivirus: avast! (VPS 0657-0, 12/12/2006), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_0036_01C8C61C.E732CFF0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable 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. =20 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). ------=_NextPart_000_0036_01C8C61C.E732CFF0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Directed to the electronic wiz = types.
 
This is not a development issue but an = educational=20 issue as I would like to = understand the=20 issues associated with developing a starter alternator.
 
Personally I believe a combined = starter,=20 alternator, flywheel, damper, timing wheel and pick up would be a great=20 advantage (we live to dream).
Some systems use the combined starter = alternator=20 attached to the gear box shaft just, between the motor and the gearbox = fluid=20 damper. 
 
I believe from talking to Bill Jepson = that getting=20 sufficient power from the current winding used is problematic but = that=20 there had been major improvements in this field. Also reading a little = on the=20 Internet ( if I understand it correctly) an alternator is AC ( = alternating=20 current) and a generator is DC. As Batteries are DC and starters are DC, = we=20 would need to use a DC generator winding in the starter generator = (someone tell=20 if I'm wrong here).
 
Of course nothing is as simple as this, = so I'm keen=20 to understand the issues associated - from anyone out there in the = electronics=20 world!?
George (down = under).
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