I have tried them all in X-Plane and unless someone can provide better models of the airfoils, ie. RAF48, AS-5045, AS-5046 and AS-5048, I have found that the RAF48 and AS-5045 work well. I have also settled on +1.0 degree incidence for the main wing and -1.0 degree for the horz. stab.. It seems to give a good level ride at cruise. Also I have been using about 1 1/2 degrees of washout in the wings which seem to give good performance near stall and good high speed cruise performance. Keep in mind that this is in X-Plane. ----- Original Message ----- From: wilder_jeff Wilder <wilder_j...@msn.com> List-Post: krnet@list.krnet.org Date: Friday, February 3, 2006 5:12 pm Subject: Re: KR> angle of incidence, AS504x
> > I have read much on the new airfoil from the posts... but I am > still left > wondering.... > > what are the net effects of the new airfoil over the raf48? > > I have 2 sets of wings. DD and another standard set that I've > picked up... > I am seriously thinking about selling them and building out the > new airfoil. > > Anyone have an idea if the effor would be worth the work? > > -Jeff > > > -Jeff Wilder > CISSP,CCE,C/EH > > > > -----BEGIN GEEK CODE BLOCK----- > Version: 3.1 > GIT/CM/CS/O d- s:+ a C+++ UH++ P L++ E- w-- N+++ o-- K- w O- M- - > V-- PS+ PE- Y++ PGP++ t+ 5- X-- R* tv b++ DI++ D++ > G e* h--- r- y+++* > ------END GEEK CODE BLOCK------ > > > > > > >From: "Bob Glidden" <glid...@ccrtc.com> > >Reply-To: KRnet <kr...@mylist.net> > >To: "michaela" <micha...@tonypickering.com>,"KRnet" > <kr...@mylist.net>>Subject: Re: KR> angle of incidence, AS504x > >Date: Thu, 2 Feb 2006 20:45:35 -0500 > >MIME-Version: 1.0 > >Received: from lizard.esosoft.net ([38.118.200.18]) by > >bay0-mc2-f11.bay0.hotmail.com with Microsoft > SMTPSVC(6.0.3790.211); Thu, 2 > >Feb 2006 17:46:04 -0800 > >Received: from localhost ([127.0.0.1] helo=lizard.esosoft.net)by > >lizard.esosoft.net with esmtp (Exim 4.43)id 1F4q1S-0006P5-6Lfor > >wilder_j...@msn.com; Thu, 02 Feb 2006 17:46:02 -0800 > >Received: from mail.ccrtc.com ([209.132.160.7] helo=ccrtc.com)by > >lizard.esosoft.net with esmtp (Exim 4.43) id 1F4q18-0006Bi-TVfor > >kr...@mylist.net; Thu, 02 Feb 2006 17:45:43 -0800 > >Received: from ADMINISTRATOR [64.184.79.168] by ccrtc.com(SMTPD32- > 8.05) id > >A5BE4B7F00B2; Thu, 02 Feb 2006 20:45:34 -0500 > >X-Message-Info: JGTYoYF78jGjaLUb1lUnj1cL6UFfbrW6taqPHnPj2ic= > >References: <20060203003600.11170.qm...@server298.com> > >X-MSMail-Priority: Normal > >X-Mailer: Microsoft Outlook Express 6.00.2900.2180 > >X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 > >X-BeenThere: kr...@mylist.net > >X-Mailman-Version: 2.1.4 > >Precedence: list > >List-Id: KRnet <krnet.mylist.net> > >List-Unsubscribe: > ><http://mylist.net/listinfo/krnet>,<mailto:krnet- > requ...@mylist.net?subject=unsubscribe>>List-Archive: > <http://mylist.net/private/krnet>>List-Post: <mailto:kr...@mylist.net> > >List-Help: <mailto:krnet-requ...@mylist.net?subject=help> > >List-Subscribe: > ><http://mylist.net/listinfo/krnet>,<mailto:krnet- > requ...@mylist.net?subject=subscribe>>Errors-To: krnet- > bounces+wilder_jeff=msn....@mylist.net>Return-Path: krnet- > bounces+wilder_jeff=msn....@mylist.net>X-OriginalArrivalTime: 03 > Feb 2006 01:46:06.0618 (UTC) > >FILETIME=[9957CFA0:01C62863] > > > >I think what Mark L is saying is that if your rear spar is > already set for > >the 1 degree there is no real advantage to raising it to 2 degree... > > > >Bob Glidden > >Eminence,Indiana > >KR2S N181FW (building) > >Corvair 110 > >glid...@ccrtc.com > >----- Original Message ----- > >From: "michaela" <micha...@tonypickering.com> > >To: "KRnet" <kr...@mylist.net> > >Sent: Thursday, February 02, 2006 7:36 PM > >Subject: Re: KR> angle of incidence, AS504x > > > > > >Mark et al.: > >I'd like to follow up on your last comment with a > question/clarification.> > >I've read your thoughts on AOI etc. I believe the project (boat > with main > >spars in place) I just purchased was built to original KR2 plans, > so I > >assume it is using 3.5degre AOI for wings?. I intend on going > with the > >AS504x. I've been thinking I will have to find a way to raise > the rear > >spar > >to get close to 1-2degree AOI. Are you suggesting its probably > not worth > >the > >effort if my main concern is cruise AOA at altitude of 5-10K. > > > >I'm also leaning toward lengthening the H.S. and increasing area > of rudder. > >Project appears past point where lengthening the fuse seems > reasonable, so > >I > >am probably stuck with it as is. But I'd like to make whatever > other tweaks > >I can to improve stability. Of course, I'll play close attention > to keeping > >COG in range... > > > >Anyone's thoughts welcome. Thanks. > > > >Tony > > > > > > > -------Original Message------- > > > From: Mark Langford <n5...@hiwaay.net> > > > Subject: Re: KR> angle of incidence, AS504x > > > Sent: 03 Feb '06 01:29 > > > > > > Russ Bell wrote: > > > > > > > What is current thought on AOI for the AS504x > > > > airfoils? Looks like initial calculations were 1 > > > > degree. Has that been found to be optimal? > > > > > > All that have been built to data have been 1 degree and nobody's > > > complained > > > yet. My fuselage is right at zero degrees at low altitude > wide open > >with > > > one degree. The question might be "how often do we fly at low > altitude> > wide > > > open", and my answer would be almost never. For that reason, > I don't > >see > > > a > > > problem with 2 degree eithers, which would give you a > slightly better > > > view > > > over the cowling, if nothing else, with little if any drag > penalty,> > unless > > > you spend all of your time doing high speed passes at sea > level. On the > > > other hand, if your aft spar is already glued in place, you > can leave > >it > > > there and it becomes a no-brainer... > > > > > > Mark Langford, Harvest, AL > > > see homebuilt airplane at http://www.N56ML.com > > > email to N56ML "at" hiwaay.net > > > > > > > > > _______________________________________ > > > Search the KRnet Archives at > http://www.maddyhome.com/krsrch/index.jsp> > to UNsubscribe from > KRnet, send a message to krnet-le...@mylist.net > > > please see other KRnet info at http://www.krnet.org/info.html > > > > > > >_______________________________________ > >Search the KRnet Archives at > http://www.maddyhome.com/krsrch/index.jsp>to UNsubscribe from > KRnet, send a message to krnet-le...@mylist.net > >please see other KRnet info at http://www.krnet.org/info.html > > > > > >_______________________________________ > >Search the KRnet Archives at > http://www.maddyhome.com/krsrch/index.jsp>to UNsubscribe from > KRnet, send a message to krnet-le...@mylist.net > >please see other KRnet info at http://www.krnet.org/info.html > > > > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html >
