X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sat, 27 Mar 2010 10:08:51 -0400 Message-ID: X-Original-Return-Path: Received: from elasmtp-dupuy.atl.sa.earthlink.net ([209.86.89.62] verified) by logan.com (CommuniGate Pro SMTP 5.3.4) with ESMTP id 4180774 for lml@lancaironline.net; Sat, 27 Mar 2010 09:49:46 -0400 Received-SPF: none receiver=logan.com; client-ip=209.86.89.62; envelope-from=colyncase@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=QjMl1Ks3D6FNBMqSbCT/7HpxCh0f5nXg5/6Y0ndcxrcC5DIYmcIZJx0Ts1LcA7HD; h=Received:Message-ID:From:To:References:Subject:Date:MIME-Version:Content-Type:X-Priority:X-MSMail-Priority:X-Mailer:X-MimeOLE:X-ELNK-Trace:X-Originating-IP; Received: from [216.57.118.178] (helo=ccaselt3) by elasmtp-dupuy.atl.sa.earthlink.net with esmtpa (Exim 4.67) (envelope-from ) id 1NvWNx-00060v-Jh for lml@lancaironline.net; Sat, 27 Mar 2010 09:49:09 -0400 X-Original-Message-ID: From: "Colyn Case at earthlink" X-Original-To: "Lancair Mailing List" References: Subject: Re: [LML] Re: Fox Article X-Original-Date: Sat, 27 Mar 2010 09:49:08 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0735_01CACD92.BF09F2E0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5843 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 X-ELNK-Trace: 63d5d3452847f8b1d6dd28457998182d7e972de0d01da940d58ed94ffac6fc199958383800b0ceef350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 216.57.118.178 This is a multi-part message in MIME format. ------=_NextPart_000_0735_01CACD92.BF09F2E0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MessageI think 61 knots is about crash energy, not likelihood of falling = out of the air. e.g. I believe the latest Meridian (or one of the other turbo-prop = singles) couldn't make the 61 knot limit so they did some energy = absorption mods to get approval. 61 is better than 71 for that reason. The FAA article seems to link high stall speed with likelihood of low = altitude stalls and difficulty of recovery. =20 ----- Original Message -----=20 From: Bill N5ZQ=20 To: lml@lancaironline.net=20 Sent: Friday, March 26, 2010 10:45 PM Subject: [LML] Re: Fox Article Lynn, Everything you say below is absolutely true. The reason that 61 knots = is even marginally significant is that is the max Vso allowed for single = engine airplanes certificated under part 23. Since we are not bound by = part 23 our Vso can be higher. Hence, this is just one of the many = differences one might find between certificated and experimental = aircraft. Why FAA jumped on this number that has no particular = significance for experimental aircraft, I have no idea.=20 Bill Harrelson N5ZQ 320 1.750 hrs N6ZQ IV under construction ------=_NextPart_000_0735_01CACD92.BF09F2E0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message
I think 61 knots is about crash energy, = not=20 likelihood of falling out of the air.
e.g. I believe the latest Meridian (or = one of the=20 other turbo-prop singles) couldn't make the 61 knot limit so they did = some=20 energy absorption mods to get approval.
61 is better than 71 for that = reason.
 
The FAA article seems to link high = stall speed with=20 likelihood of low altitude stalls and difficulty of = recovery.  =20
 
----- Original Message -----
From:=20 Bill = N5ZQ
Sent: Friday, March 26, 2010 = 10:45=20 PM
Subject: [LML] Re: Fox = Article

Lynn,
 
Everything you say below is absolutely true. The reason that = 61 knots=20 is even marginally significant is that is the max Vso allowed for = single=20 engine airplanes certificated under part 23. Since we are not bound by = part 23=20 our Vso can be higher. Hence, this is just one of the many = differences=20 one might find between certificated and experimental = aircraft. Why FAA=20 jumped on this number that has no particular significance for = experimental=20 aircraft, I have no idea.
 
Bill=20 Harrelson
N5ZQ=20 320 1.750 hrs
N6ZQ  IV under construction
 
 
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