X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sat, 05 Dec 2009 02:01:32 -0500 Message-ID: X-Original-Return-Path: Received: from imr-ma06.mx.aol.com ([64.12.78.142] verified) by logan.com (CommuniGate Pro SMTP 5.3c3) with ESMTP id 4003149 for lml@lancaironline.net; Fri, 04 Dec 2009 18:54:01 -0500 Received-SPF: pass receiver=logan.com; client-ip=64.12.78.142; envelope-from=Sky2high@aol.com Received: from imo-da03.mx.aol.com (imo-da03.mx.aol.com [205.188.169.201]) by imr-ma06.mx.aol.com (8.14.1/8.14.1) with ESMTP id nB4NrPrj025311 for ; Fri, 4 Dec 2009 18:53:25 -0500 Received: from Sky2high@aol.com by imo-da03.mx.aol.com (mail_out_v42.5.) id q.c22.71168b15 (42809) for ; Fri, 4 Dec 2009 18:53:19 -0500 (EST) From: Sky2high@aol.com X-Original-Message-ID: X-Original-Date: Fri, 4 Dec 2009 18:53:18 EST Subject: Vne for 300 series Lancairs X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1259970797" X-Mailer: AOL 9.5 sub 155 X-Spam-Flag:NO X-AOL-SENDER: Sky2high@aol.com -------------------------------1259970797 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit 320/360/390 drivers in the 320/360 fuselage: 235 KIAS = Vne, assuming that a good static port is used, then also assume KCAS = KEAS = KIAS Here are some interesting data points: Assume indicated altitude = Palt = Dalt and Baro = 29.92 at 17,000 ft. and -18C, 180 KIAS = 235 KTAS at 10,000 ft. and -5C, 201 KIAS = 234 KTAS at 5,000 ft. and 5C, 217 KIAS = 234 KTAS As a practice (and not based on any logical reasoning) I normally descend from most altitudes at a comfortable 180 KIAS. I haven't been over 11,000 feet since the last Redmond Labor Day fly in (several years ago) that would have required high flight over the smoke and mountains. I don't remember descent air speeds from those higher altitudes. BTW, my NA 170 HP engine will not quite get me to the destructive Vne in cruise. When I raced cross country (2000 to 4000 ft), I have achieved 205 KIAS. On a hot day that might be 217 KTAS. I feel so much better now. Scott Krueger AKA Grayhawk -------------------------------1259970797 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

320/360/390 drivers in the 320/360 fuselage:

235 KIAS =3D Vne, assuming that a good static port is used, then also= =20 assume KCAS =3D KEAS =3D KIAS

Here are some interesting data points:

Assume indicated altitude =3D Palt =3D Dalt and Baro =3D 29.92 <= /DIV>

at 17,000 ft. and -18C, 180 KIAS =3D 235 KTAS

at 10,000 ft. and -5C, 201 KIAS =3D 234 KTAS

at 5,000 ft. and 5C, 217 KIAS =3D 234 KTAS

As a practice (and not based on any logical reasoning) I normally des= cend=20 from most altitudes at a comfortable 180 KIAS. I haven't= been=20 over 11,000 feet since the last Redmond Labor Day fly in (several years ag= o)=20 that would have required high flight over the smoke and mountains. I= don't=20 remember descent air speeds from those higher altitudes.

BTW, my NA 170 HP engine will not quite get me to the destr= uctive=20 Vne in cruise. When I raced cross country (2000 to 4000 ft), I have= =20 achieved 205 KIAS. On a hot day that might be 217 KTAS.

I feel so much better now.

Scott Krueger AKA Grayhawk

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