X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-vw0-f52.google.com ([209.85.212.52] verified) by logan.com (CommuniGate Pro SMTP 5.4.0) with ESMTPS id 5041376 for flyrotary@lancaironline.net; Sun, 03 Jul 2011 17:47:10 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.212.52; envelope-from=thomasmann51@gmail.com Received: by vws16 with SMTP id 16so3587051vws.25 for ; Sun, 03 Jul 2011 14:46:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=wN4UMsApB5V0Ews3n2LUEmorSob7hTp1aEyiXnrJ8lk=; b=OP6lCfO167BB8h5XZjYrF9GoZSkkaa+o50KkTxmxeWY2LI3c+6BPXAgd4oCtVArRES CMG2jyBn2+WNtogSGGnnY9wiffUnGIK4hpWIxetaByA5qLc/ea3/gG88pEPRP6eVQ3UU K3bNUfiGuUpzvEbNo54cYIM7To0xmpyrOL17E= MIME-Version: 1.0 Received: by 10.220.215.8 with SMTP id hc8mr1897146vcb.166.1309729592794; Sun, 03 Jul 2011 14:46:32 -0700 (PDT) Received: by 10.220.181.202 with HTTP; Sun, 3 Jul 2011 14:46:32 -0700 (PDT) In-Reply-To: References: Date: Sun, 3 Jul 2011 16:46:32 -0500 Message-ID: Subject: Re: [FlyRotary] VNE / Flutter Testing From: Thomas Mann To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=bcaec54ee752215d4004a7312f64 --bcaec54ee752215d4004a7312f64 Content-Type: text/plain; charset=ISO-8859-1 This is what flutter looks like in a canard. www.cozybuilders.org/Movies/Varieze_Canard_Flutter_RR-Small.wmv On Sun, Jul 3, 2011 at 2:24 PM, Kelly Troyer wrote: > Ernest, > The procedure is to test with many steps increasing speed in small > increments always ready > to reduce throttle and increase AOA at the slightest indication of > flutter.............. > > Kelly Troyer > *"DYKE DELTA JD2" (Eventually)* > "13B ROTARY"_ Engine > "RWS"_RD1C/EC2/EM2 > "MISTRAL"_Backplate/Oil Manifold > "TURBONETICS"_TO4E50 Turbo > > *From:* Ernest Christley > *To:* Rotary motors in aircraft > *Sent:* Sunday, July 3, 2011 2:11 PM > *Subject:* [FlyRotary] Re: GSL393/74028 Fuel Pump Replacement/Fuel Leak > > On 07/02/2011 11:12 AM, Thomas Mann wrote: > > I know that the plans built composite aircraft (Rutan designs and > derivatives) can have a Vne that can be higher or lower than the design > specs as a direct result of workmanship. Each (in my case a Long-EZ) > aircraft is a one-off and only flight testing can determine the TRUE > V-speeds. > I think that is less of a factor in the RV world but a factor just the > same. > Flutter is really ugly. > > How is the Vne testing performed? I can't think of anything other than > pushing the throttle to the firewall and waiting to see what happens, but > that sounds awful dangerous to me. > > > --bcaec54ee752215d4004a7312f64 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable This is what flutter looks like in a canard.=A0



On Sun, Jul 3, 2011 at 2:24 PM, Kelly Tr= oyer <keltro@att.net= > wrote:
Ernest,
=A0=A0 The procedure is to test with many steps increasing speed= in small increments always ready
to reduce throttle and increase=A0AOA=A0at the slight= est indication of flutter..............
=A0
Kelly Troyer
"DYKE DELTA JD2" = (Eventually)
"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
&quo= t;MISTRAL"_Backplate/Oil Manifold
"TURBONETICS"_TO4E50 Turbo

From: Ernest Christley= <echristley@att= .net>
To: Rotary m= otors in aircraft <flyrotary@lancaironline.net>
Sent: Sunday, July 3, 2011 2= :11 PM
Subject: [FlyRotar= y] Re: GSL393/74028 Fuel Pump Replacement/Fuel Leak

On 07/02/2011 11:12 AM, Thomas Mann wrote:=20
I know that the plans built composite aircraft (Rutan designs and deri= vatives) can have a Vne that can be higher or lower than the design specs a= s a direct result of workmanship. Each (in my case a Long-EZ) aircraft is a= one-off and only flight testing can determine the TRUE V-speeds.
I think that is less of a factor in the RV world but a factor just the= same.
Flutter is really ugly.
How is the Vne testing= performed?=A0 I can't think of anything other than pushing the throttl= e to the firewall and waiting to see what happens, but that sounds awful da= ngerous to me.



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