Return-Path: Sender: (Marvin Kaye) To: lml Date: Mon, 27 Oct 2003 13:32:52 -0500 Message-ID: X-Original-Return-Path: Received: from mxsf10.cluster1.charter.net ([209.225.28.210] verified) by logan.com (CommuniGate Pro SMTP 4.1.6) with ESMTP id 2661745 for lml@lancaironline.net; Mon, 27 Oct 2003 13:10:39 -0500 Received: from computer (cc2-24.217.124.116.charter-stl.com [24.217.124.116]) by mxsf10.cluster1.charter.net (8.12.10/8.12.8) with SMTP id h9RHmrZl096955; Mon, 27 Oct 2003 12:48:53 -0500 (EST) (envelope-from bobjude@charter.net) X-Original-Message-ID: <002f01c39cb2$ff0168a0$747cd918@computer> From: "Bob Jude" X-Original-To: "Gary Fitzgerald" X-Original-Cc: "Mail List Lancair" Subject: Flaps X-Original-Date: Mon, 27 Oct 2003 11:51:03 -0600 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_002C_01C39C80.9918EB80" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1158 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 This is a multi-part message in MIME format. ------=_NextPart_000_002C_01C39C80.9918EB80 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable Well, it's been a few years since we last covered this topic, so it's = time for some LNC2 flap questions again... Gary, I will make a few comments here but I will come over and look and = discuss it further anytime that's convenient. Bob 1. Even after searching the LML archives, I'm unclear as to whether the fuselage faired position for the flaps is the zero-degree position, or = the reflex position The blueprints indicate that the fuselage-faired = position is the -7 degrees reflex position, but the manual seems to indicate that = the reflex position is with the flap trailing edges above the fuselage = fillet. Which is correct? I discussed this subject with Lance N, back about 1992. He said that = the 320 gets no speed benefit from reflexing the flaps up further than = the faired in position. Some of the words in the manual apply to the = 235 and not 320/360 airframe. The manual was never brought up to date = for the 320. 2. My fillets are uneven (they differ by 1/2"). I plan on splitting = the difference on the flap trailing edges(one side 1/4" below fuselage = faired, the other 1/4" above). Anybody see any problems with this method? I don't quit understand what you mean by "my fillets are uneven". Maybe = you could consider adding some filler, structural extension or other = add-on to even them out. Appearance isn't everything but a nice looking = airplane sure helps in re-sale value. 3. I run out of skin on the flap leading edge when my flaps drop more = than 38 degrees below the faired in position. For the others who ran into = this situation, did you add some BID to either the leading or trailing edge = of the upper flap skin, or did you just install the braces along the flap leading edge and get on with business? I wouldn't worry about any open gaps when the flaps are down. Flaps = down configuration is supposed to be dirty (high drag). Thanks for any insight anyone can provide here, Gary Fitzgerald LNC2 standard build ~60% Engine: TBD St. Charles, MO ------=_NextPart_000_002C_01C39C80.9918EB80 Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable

Well, it's been a few years since we last covered this topic, so = it's=20 time
for some LNC2 flap questions again...

Gary, I will make a few comments here = but I=20 will come over and look and discuss it further anytime that's=20 convenient.

Bob

1. Even after searching the LML archives, I'm unclear as to = whether=20 the
fuselage faired position for the flaps is the zero-degree = position, or=20 the
reflex position The blueprints indicate that the = fuselage-faired=20 position
is the -7 degrees reflex position, but the manual seems to = indicate=20 that the
reflex position is with the flap trailing edges above the = fuselage=20 fillet.
Which is correct?

I discussed this subject with Lance = N, back=20 about 1992. He said that the 320 gets no speed benefit from = reflexing the=20 flaps up further than the faired in position. Some of the words in = the=20 manual apply to the 235 and not 320/360 airframe. The manual was = never=20 brought up to date for the 320.

2. My fillets are uneven (they differ by 1/2"). I plan = on=20 splitting the
difference on the flap trailing edges(one side 1/4" = below=20 fuselage faired,
the other 1/4" above). Anybody see any = problems with=20 this method?

I don't quit understand what you mean = by "my=20 fillets are uneven". Maybe you could consider adding some filler,=20 structural extension or other add-on to even them out. Appearance = isn't=20 everything but a nice looking airplane sure helps in re-sale=20 value.

3. I run out of skin on the flap leading edge when my flaps = drop more=20 than
38 degrees below the faired in position. For the others = who ran=20 into this
situation, did you add some BID to either the leading or = trailing=20 edge of
the upper flap skin, or did you just install the braces along = the=20 flap
leading edge and get on with business?

I wouldn't worry about any open gaps = when the=20 flaps are down. Flaps down configuration is supposed to be dirty = (high=20 drag).

Thanks for any insight anyone can provide here,

Gary Fitzgerald
LNC2 standard build ~60%
Engine: TBD
St. = Charles,=20 MO

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