Return-Path: Received: from fed1mtao05.cox.net ([68.6.19.126] verified) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 2946264 for flyrotary@lancaironline.net; Fri, 23 Jan 2004 21:09:35 -0500 Received: from BigAl ([68.107.116.221]) by fed1mtao05.cox.net (InterMail vM.5.01.06.05 201-253-122-130-105-20030824) with ESMTP id <20040124020931.JCEC15401.fed1mtao05.cox.net@BigAl> for ; Fri, 23 Jan 2004 21:09:31 -0500 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Torsionals Date: Fri, 23 Jan 2004 18:09:37 -0800 Message-ID: <002901c3e21f$1e185300$6400a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_002A_01C3E1DC.0FF51300" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4024 x-mimeole: Produced By Microsoft MimeOLE V6.00.2800.1165 In-Reply-To: Importance: Normal This is a multi-part message in MIME format. ------=_NextPart_000_002A_01C3E1DC.0FF51300 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Subject: [FlyRotary] Re: Torsionals =20 Hi Perry et al, =20 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? =20 Tony. =20 =20 Most likely; but there can be =BD wave and =BC wave resonances. =20 Al ------=_NextPart_000_002A_01C3E1DC.0FF51300 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Subject: [FlyRotary] Re: Torsionals

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.

Most likely; but there can be =BD = wave and =BC wave resonances.

Al

------=_NextPart_000_002A_01C3E1DC.0FF51300--