Return-Path: Sender: (Marvin Kaye) To: lml@lancaironline.net Date: Thu, 19 Feb 2004 20:49:38 -0500 Message-ID: X-Original-Return-Path: Received: from [64.4.35.201] (HELO hotmail.com) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 2999262 for lml@lancaironline.net; Thu, 19 Feb 2004 19:18:51 -0500 Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Thu, 19 Feb 2004 16:18:50 -0800 Received: from 67.1.57.144 by bay12-dav27.bay12.hotmail.com with DAV; Fri, 20 Feb 2004 00:18:50 +0000 X-Originating-IP: [67.1.57.144] X-Originating-Email: [gary21sn@hotmail.com] X-Sender: gary21sn@hotmail.com From: "Gary Edwards" X-Original-To: "Lancair Mailing List" Subject: [LML} Strengthening the longerons? X-Original-Date: Thu, 19 Feb 2004 16:18:44 -0800 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_004B_01C3F704.0BECBD20" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: MSN 8.5 X-MimeOLE: Produced By MSN MimeOLE V8.50.0017.1202 Seal-Send-Time: Thu, 19 Feb 2004 16:18:44 -0800 X-Original-Message-ID: X-OriginalArrivalTime: 20 Feb 2004 00:18:50.0490 (UTC) FILETIME=[1D6C95A0:01C3F747] This is a multi-part message in MIME format. ------=_NextPart_000_004B_01C3F704.0BECBD20 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable >>I'm concerned that I've introduced a failure mode whereby a hard = landing could in effect snap the nose off the aircraft. I am ignorant about aircraft accidents and the related damage. =20 However, if the plane hits hard enough on landing to break the fuselage, = there is likely going to be a lot of other significant aircraft damage = as well as possible damage to the occupants. =20 I am aware of hard landings (me) that really hurt (me), but didn't = damage the plane, and aware of hard landings (not me) that jammed the = main gear components up through the top skin of the stub wing with no = related damage to the fuselage. I drilled through the longerons and did not beef up the fuselage. On the subject of 235 tilt canopies: Since the tilt up canopy plans are for the 320/360 airframe, I moved the = canopy strut brackets forward on the longerons to get the proper = geometry. Also, I mounted the canopy hinge mounts on the header tank as = high as possible in order for the canopy leading edge (center) to clear = the rear edge of the header tank. Gary Edwards LNC2 N21SN ------=_NextPart_000_004B_01C3F704.0BECBD20 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

>>I'm concerned that I've introduced a failure mode = whereby a=20 hard landing
could in effect snap the nose off the = aircraft.

I am ignorant about aircraft accidents and the related = damage. =20

However, if the plane hits hard enough on landing to = break the=20 fuselage, there is likely going to be a lot of other significant = aircraft=20 damage as well as possible damage to the occupants.

I am aware of hard landings (me) that really hurt (me), but didn't = damage=20 the plane, and aware of hard landings (not me) that jammed the main gear = components up through the top skin of the stub wing with no related = damage to=20 the fuselage.

I drilled through the longerons and did not beef up the = fuselage.

On the subject of 235 tilt canopies:

Since the tilt up canopy plans are for the 320/360 airframe, I = moved the=20 canopy strut brackets forward on the longerons to get the proper = geometry. =20 Also, I mounted the canopy hinge mounts on the header tank as high = as=20 possible in order for the canopy leading edge (center) to clear the = rear=20 edge of the header tank.

Gary Edwards

LNC2 N21SN

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