Return-Path: Sender: (Marvin Kaye) To: lml@lancaironline.net Date: Tue, 13 Apr 2004 20:53:47 -0400 Message-ID: X-Original-Return-Path: Received: from hagus.bright.net ([209.143.0.74] verified) by logan.com (CommuniGate Pro SMTP 4.2b2) with ESMTP id 3165129 for lml@lancaironline.net; Tue, 13 Apr 2004 20:18:14 -0400 Received: from bright.net (paul-bryn-breeze-122.wireless.bright.net [216.201.20.123] (may be forged)) by hagus.bright.net (8.12.10/8.12.10) with ESMTP id i3E0ICqQ027226; Tue, 13 Apr 2004 20:18:13 -0400 (EDT) X-Original-Message-ID: <407C8344.6080801@bright.net> X-Original-Date: Tue, 13 Apr 2004 20:18:12 -0400 From: J H Webb User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: en-us, en MIME-Version: 1.0 X-Original-To: YoSamuel@aol.com, Lancair Mailing List Subject: Ventral Fin Content-Type: multipart/alternative; boundary="------------070207070907090906080404" This is a multi-part message in MIME format. --------------070207070907090906080404 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit >Your pictures show the ventral installed during the building phase. I'm curious how you tested the aircraft without it. Is it removable? >Thanks. Dave. Good eyesight and logic. The fin shown in the building phase was on another airplane with an unusually large engine that never flew. The PT 6 turbine version was flown without the fin originally and then after about 3 hours the fin was added. Chronically the airplane in the building phase was first and the turbine was the second installation. We got good information by flying with and without. We had expected to have some directional problems on the turbine and discovered that power losses at high speed with the prop windmilling (unfeathered) could be very exciting. Jack Webb L 360, L IV ATP, CFI Airplanes & Instruments, Multi, & Sea Many Type Ratings Experienced Experimental Test Pilot both multi and single engine Former Chief Engineering Test Pilot for a Major Manufacturer AeroSpace Engineer BSAE Ohio --------------070207070907090906080404 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit

>Your pictures show the ventral installed during the building phase. I'm curious how you tested the aircraft without it. Is it removable?

>Thanks. Dave.

Good eyesight and logic. The fin shown in the building phase was on another airplane with an unusually large engine that never flew. The PT 6 turbine version was flown without the fin originally and then after about 3 hours the fin was added. Chronically the airplane in the building phase was first and the turbine was the second installation. We got good information by flying with and without. We had expected to have some directional problems on the turbine and discovered that power losses at high speed with the prop windmilling (unfeathered) could be very exciting.

Jack Webb
L 360, L IV
ATP, CFI Airplanes & Instruments, Multi, & Sea
Many Type Ratings
Experienced Experimental Test Pilot both multi and single engine
Former Chief Engineering Test Pilot for a Major Manufacturer
AeroSpace Engineer BSAE
Ohio

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