Return-Path: Received: from relay04.roc.ny.frontiernet.net ([66.133.131.37] verified) by logan.com (CommuniGate Pro SMTP 4.2.5) with ESMTP id 591922 for flyrotary@lancaironline.net; Wed, 05 Jan 2005 02:08:40 -0500 Received-SPF: pass receiver=logan.com; client-ip=66.133.131.37; envelope-from=canarder@frontiernet.net Received: from filter02.roc.ny.frontiernet.net (filter02.roc.ny.frontiernet.net [66.133.131.177]) by relay04.roc.ny.frontiernet.net (Postfix) with ESMTP id 84422FFBF for ; Wed, 5 Jan 2005 07:08:05 +0000 (UTC) Received: from relay04.roc.ny.frontiernet.net ([66.133.131.37]) by filter02.roc.ny.frontiernet.net (filter02.roc.ny.frontiernet.net [66.133.131.177]) (amavisd-new, port 10024) with LMTP id 29262-06-24 for ; Wed, 5 Jan 2005 07:08:05 +0000 (UTC) Received: from [127.0.0.1] (70-97-234-61.dsl2.cok.tn.frontiernet.net [70.97.234.61]) by relay04.roc.ny.frontiernet.net (Postfix) with ESMTP id EDB56FF41 for ; Wed, 5 Jan 2005 07:08:04 +0000 (UTC) Message-ID: <41DB92CC.9030602@frontiernet.net> Date: Wed, 05 Jan 2005 01:10:04 -0600 From: Jim Sower User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7) Gecko/20040514 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: IAS and Vne! Whoa! References: In-Reply-To: Content-Type: multipart/alternative; boundary="------------030306020203020502030409" X-Antivirus: avast! (VPS 0501-0, 01/04/2005), Outbound message X-Antivirus-Status: Clean X-Virus-Scanned: by amavisd-new-20040701 (2.0) at filter02.roc.ny.frontiernet.net This is a multi-part message in MIME format. --------------030306020203020502030409 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Actually, I'm talking about flutter. VNE (for our homebuilt purposes) seems to be that IAS at which the designer who almost certainly hasn't gone into it too very deeply, begins to perceive that he is on the cusp of being uncomfortably close to it. Flutter that is. It's on that page in the POH that even SMELLS like it's been pulled out of someone's ass :o) I think I'll get some sleep ... Jim S. Jim Sower wrote: > Actually, I've been given to understand that *both* IAS and TAS are a > factor. I don't know exactly what the relationship is, just that they > both come into play. > But now I've told you more than I know ... Jim S. > > John Slade wrote: > >> > Apparently Vne is NOT, it is a factor of True Airspeed!! That's >> contrary to what I've read with respect to canard pushers, Ed. >> As I understand it VNE for the Cozy, for example, is 220 mph IAS. >> It's all to do with how many air molecules are hitting the airplane. >> Someone tell me I'm wrong. ??? >> >> John >> >> >> > > > >>> Homepage: http://www.flyrotary.com/ >>> Archive: http://lancaironline.net/lists/flyrotary/List.html >> > > --------------030306020203020502030409 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit Actually, I'm talking about flutter. VNE (for our homebuilt purposes) seems to be that IAS at which the designer who almost certainly hasn't gone into it too very deeply, begins to perceive that he is on the cusp of being uncomfortably close to it. Flutter that is. It's on that page in the POH that even SMELLS like it's been pulled out of someone's ass :o)
I think I'll get some sleep ... Jim S.

Jim Sower wrote:

Actually, I've been given to understand that *both* IAS and TAS are a factor. I don't know exactly what the relationship is, just that they both come into play.
But now I've told you more than I know ... Jim S.

John Slade wrote:

> Apparently Vne is NOT, it is a factor of True Airspeed!! That's contrary to what I've read with respect to canard pushers, Ed.
As I understand it VNE for the Cozy, for example, is 220 mph IAS.
It's all to do with how many air molecules are hitting the airplane.
Someone tell me I'm wrong. ???

John

Homepage: http://www.flyrotary.com/
Archive: http://lancaironline.net/lists/flyrotary/List.html

--------------030306020203020502030409--