X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Fri, 12 Jun 2009 16:37:23 -0400 Message-ID: X-Original-Return-Path: Received: from elasmtp-scoter.atl.sa.earthlink.net ([209.86.89.67] verified) by logan.com (CommuniGate Pro SMTP 5.2.14) with ESMTP id 3680018 for lml@lancaironline.net; Thu, 11 Jun 2009 21:34:05 -0400 Received-SPF: none receiver=logan.com; client-ip=209.86.89.67; envelope-from=rpharis@teamimc.com Received: from [71.116.122.40] (helo=s1) by elasmtp-scoter.atl.sa.earthlink.net with esmtpa (Exim 4.67) (envelope-from ) id 1MEve5-00013G-So for lml@lancaironline.net; Thu, 11 Jun 2009 21:33:30 -0400 X-Original-Message-ID: <003f01c9eafd$cd02ad60$2101a8c0@s1> Reply-To: "Rod Pharis" From: "Rod Pharis" X-Original-To: "Lancair Mailing List" References: Subject: Re: [LML] Re: 235 gear down speed? X-Original-Date: Thu, 11 Jun 2009 18:33:32 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_003C_01C9EAC3.1F8DAA70" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1933 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1933 X-ELNK-Trace: 1293b74446918d85d780f4a490ca6956abb457f1b4332f52ed8a4ed2e29e3c8983a0f220cae50de0350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 71.116.122.40 This is a multi-part message in MIME format. ------=_NextPart_000_003C_01C9EAC3.1F8DAA70 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Likely because with the nose gear open the air pressure is the same on = top and bottom (maybe even higher on the bottom due to higher angle of = attack). On a top-down air-flow system, to force cool air flow through = the cylinder fins and the oil cooler, the air pressure must be higher on = the top, and lower on the bottom. Therefore, the nose gear door must be = closed to achieve optimum (or perhaps any) air flow where it needs to be = most. Rod ----- Original Message -----=20 From: Bill Kennedy=20 To: lml@lancaironline.net=20 Sent: Thursday, June 11, 2009 11:12 AM Subject: [LML] Re: 235 gear down speed? My 320 Operators Manual specifies 122Kt for gear operation, and 140Kt = max for flight with the gear down. Note: my engine heats up very quickly = with high power and the landing gear down. Bill Kennedy N42BK 565 hours and counting -------------------------------------------------------------------------= ----- From: marv@lancair.net To: lml@lancaironline.net Date: Wed, 10 Jun 2009 13:33:25 -0400 Subject: [LML] 235 gear down speed? Posted for : How fast may one fly a 235 with gear remaining down? =20 Terrence L235/320 N211AL --For archives and unsub = http://mail.lancaironline.net:81/lists/lml/List.html ------=_NextPart_000_003C_01C9EAC3.1F8DAA70 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Likely because with the nose gear open the air = pressure is=20 the same on top and bottom (maybe even higher on the bottom due to = higher angle=20 of attack).  On a top-down air-flow system, to force cool air flow = through=20 the cylinder fins and the oil cooler, the air pressure must be higher on = the=20 top, and lower on the bottom.  Therefore, the nose gear door must = be closed=20 to achieve optimum (or perhaps any) air flow where it needs to be=20 most.
 
Rod
----- Original Message -----
From:=20 Bill Kennedy
Sent: Thursday, June 11, 2009 = 11:12=20 AM
Subject: [LML] Re: 235 gear = down=20 speed?

My 320 Operators Manual specifies 122Kt for gear = operation, and=20 140Kt max for flight with the gear down. Note: my engine heats up very = quickly=20 with high power and the landing gear down.

Bill = Kennedy
N42BK 565=20 hours and counting

From: marv@lancair.net
To: = lml@lancaironline.net
Date: = Wed, 10=20 Jun 2009 13:33:25 -0400
Subject: [LML] 235 gear down speed?

Posted=20 for <troneill@charter.net>:

 How fast may one fly a = 235 with=20 gear remaining down?
 
 Terrence
 L235/320=20 N211AL

--

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