Return-Path: Received: from mk-smarthost-3.mail.uk.tiscali.com ([212.74.114.39] verified) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 2946079 for flyrotary@lancaironline.net; Fri, 23 Jan 2004 17:29:34 -0500 Received: from ppp-0-66.edin-b-1.access.uk.tiscali.com ([80.225.143.66]:3018 helo=nscvsy6kod72n8) by mk-smarthost-3.mail.uk.tiscali.com with smtp (Exim 4.24) id 1Ak9nq-00092m-FC for flyrotary@lancaironline.net; Fri, 23 Jan 2004 22:29:26 +0000 Message-ID: <000e01c3e200$5ef29760$428fe150@nscvsy6kod72n8> From: "Tony Dolby" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Torsionals Date: Fri, 23 Jan 2004 22:28:57 -0000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000B_01C3E200.4A64C020" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1158 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 This is a multi-part message in MIME format. ------=_NextPart_000_000B_01C3E200.4A64C020 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi Perry et al, Just to add my 2d, if the firing impulses are halved by cutting down to = one rotor, is not the torsional frequency also halved? Or am I missing = something. If so, to what effect? Tony. If the two rotor is similar to a 4 cylinder 4 stroke piston engine, = wouldn't a one rotor be similar to a 2 cylinder 4 stroke engine? Lamar = has published the plots many times showing no torque reversals for a two = rotor but very strong torque reversals for a one rotor. --=20 Perry Mick ------=_NextPart_000_000B_01C3E200.4A64C020 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Hi Perry et al,

Just to add my 2d, if the firing = impulses =20 are halved by cutting down to one rotor, is not the torsional frequency = also=20 halved? Or am I missing something. If so, to what effect?

Tony.

If the two rotor is similar to a 4 cylinder 4 stroke piston engine, = wouldn't a one rotor be similar to a 2 cylinder 4 stroke engine? Lamar = has=20 published the plots many times showing no torque reversals for a two = rotor but=20 very strong torque reversals for a one rotor.
--
Perry=20 Mick

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