X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 02 Oct 2013 07:50:22 -0400 Message-ID: X-Original-Return-Path: Received: from blu0-omc3-s37.blu0.hotmail.com ([65.55.116.112] verified) by logan.com (CommuniGate Pro SMTP 6.0.7) with ESMTP id 6498741 for lml@lancaironline.net; Tue, 01 Oct 2013 21:34:22 -0400 Received-SPF: pass receiver=logan.com; client-ip=65.55.116.112; envelope-from=gary21sn@hotmail.com Received: from BLU172-DS21 ([65.55.116.73]) by blu0-omc3-s37.blu0.hotmail.com with Microsoft SMTPSVC(6.0.3790.4675); Tue, 1 Oct 2013 18:33:49 -0700 X-TMN: [PMBsIATUeQt0CQhjAMPWnoYJpvBoFzCA] X-Originating-Email: [gary21sn@hotmail.com] X-Original-Message-ID: X-Original-Return-Path: gary21sn@hotmail.com From: "Gary Edwards" X-Original-To: "Lancair Mailing List" References: Subject: Re: Lancair 320/360 performance and stability X-Original-Date: Tue, 1 Oct 2013 18:34:06 -0700 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/alternative; boundary="----=_NextPart_000_0181_01CEBED4.CFAE1680" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: MSN 9 X-MimeOLE: Produced By MSN MimeOLE V10.50.0019.1000 Seal-Send-Time: Tue, 1 Oct 2013 18:34:06 -0700 X-OriginalArrivalTime: 02 Oct 2013 01:33:49.0166 (UTC) FILETIME=[719A10E0:01CEBF0F] This is a multi-part message in MIME format. ------=_NextPart_000_0181_01CEBED4.CFAE1680 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Chris, Glad you asked the question. I went to the hanger and did some = measuring and reading of the original plans. Since I'm over 60 now, I = am not responsible for my memory anymore, so the incorrect measurement = information I gave previously is not my fault. Now for the rest of the story. The original building plans show: Flap Measurements Inboard flap chord length: 11 5/8" Outboard Flap chord length: 9 1/4" Flap Travel -10 degrees flap reflex: 1 5/8" I concur about the measurement differing slightly whether perpendicular = to the hinges or at the actual inboard edge angle. My flap: 11 7/16" (perpendicular) 11 5/8" (inboard edge angle) My flap travel coincides roughly with the above 1 5/8" measurement. It = was difficult to get an accurate measurement as my digital flap = indicator only reads whole numbers. So there is slight variance in = actual flap position whether the digital indicator is at the beginning = or at the end of a whole number (ie 10.1 to 10.9). It is also made a = bit un-precise since the flap motor coasts to a stop. I imagine the 235 flaps are the same as the 320/360? The only = difference would be the 235 flaps are hinged from the top. Gary=20 ----- Original Message -----=20 From: Chris Zavatson=20 To: lml@lancaironline.net=20 Sent: Tuesday, October 1, 2013 9:17 AM Subject: [LML] Re: Lancair 320/360 performance and stability Gary, What is the flap chord length (center line of hinge to TE) at the root = on a 235? It must be shorter than a 320/360 given the 0.75" TE travel. My trailing edge moves 1.48" to go from 0 to -7 degrees. =20 An added complication is that the inboard edge of the flap is not = perpendicular to the hinge. If you measure along the inboard edge, = you'll get a slightly longer measurement. =20 Honestly, I prefer a direct angular measurement. It takes all the = geometry issues out of the equation. I just checked the iPhone = (Theodolite App) against my digital level. The iPhone is a bit harder = to read but it followed the level exactly. The 'not free' version = allows you to do screen captures. Chris Zavatson N91CZ 360std http://www.n91cz.net/ From: Gary Edwards To: lml@lancaironline.net=20 Sent: Tuesday, October 1, 2013 4:30 AM Subject: [LML] Re: Lancair 320/360 performance and stability Don't know if this is any help. =20 The reflex position on the 235 airframe (same wing as the 320/360 = wing) is up from the faired in with the fuselage position, which is 0 = degrees. -9 degrees is 0.75" (3/4") up from the fuselage. So you could = interpolate the distance to come up with the amount you are thinking of = changing to. Gary LNC2 ------=_NextPart_000_0181_01CEBED4.CFAE1680 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Chris,
 
Glad you asked the question.  I went to the hanger and did = some=20 measuring and reading of the original plans.  Since I'm over 60 = now, I am=20 not responsible for my memory anymore, so the incorrect measurement = information I gave previously is not my fault.
 
Now for the rest of the story.  The original building plans=20 show:
 
Flap Measurements
Inboard flap chord length:  11 5/8"
Outboard Flap chord length: 9 1/4"
 
Flap Travel
-10 degrees flap reflex: 1 5/8"
 
I concur about the measurement differing slightly whether = perpendicular to=20 the hinges or at the actual inboard edge angle.
 
My flap: 11 7/16" (perpendicular)
            = 11=20 5/8"  (inboard edge angle)
 
My flap travel coincides roughly with the above 1 5/8" = measurement. =20 It was difficult to get an accurate measurement as my digital flap = indicator=20 only reads whole numbers.  So there is slight variance in actual = flap=20 position whether the digital indicator is at the beginning  or at = the end=20 of a whole number (ie 10.1 to 10.9).  It is also made a bit = un-precise=20 since the flap motor coasts to a stop.
 
I imagine the 235 flaps are the same as the 320/360?  The only = difference would be the 235 flaps are hinged from the top.
 
Gary 
----- Original Message -----
From: Chris Zavatson
Sent: Tuesday, October 1, 2013 = 9:17=20 AM
Subject: [LML] Re: Lancair = 320/360=20 performance and stability

Gary,
What is the flap chord length (center line of hinge to TE) = at the=20 root on a 235?  It must be shorter than a 320/360 given the 0.75" = TE=20 travel.
My trailing edge moves 1.48" to go from 0 to -7 = degrees. =20
An added complication is that the inboard edge of the flap = is not=20 perpendicular to the hinge.  If you measure along the inboard = edge,=20 you'll get a slightly longer measurement. 
Honestly, I prefer a direct angular measurement.  = It=20 takes all the geometry issues out of the equation.  I just = checked the=20 iPhone (Theodolite App) against my digital level.  The iPhone is = a bit=20 harder to read but it followed the level exactly.  = The=20 'not free' version allows you to do screen captures.
 
Chris Zavatson
N91CZ
360std

From: Gary Edwards=20 <gary21sn@hotmail.com>
To: lml@lancaironline.net Sent: = Tuesday,=20 October 1, 2013 4:30 AM
Subject: [LML] Re: Lancair = 320/360=20 performance and stability

Don't know if this is any help. 
 
The reflex position on the 235 airframe (same wing as the = 320/360=20 wing) is up from the faired in with the fuselage position, which is 0=20 degrees.  -9 degrees is 0.75" (3/4") up from the fuselage.  = So you=20 could interpolate the distance to come up with the amount you are = thinking of=20 changing to.
 
Gary
=
LNC2
------=_NextPart_000_0181_01CEBED4.CFAE1680--