X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imf18aec.mail.bellsouth.net ([205.152.59.66] verified) by logan.com (CommuniGate Pro SMTP 4.3c5) with ESMTP id 940642 for flyrotary@lancaironline.net; Wed, 11 May 2005 19:34:15 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.66; envelope-from=sqpilot@bellsouth.net Received: from paul ([209.214.45.13]) by imf18aec.mail.bellsouth.net (InterMail vM.5.01.06.11 201-253-122-130-111-20040605) with SMTP id <20050511233328.LJJD2152.imf18aec.mail.bellsouth.net@paul> for ; Wed, 11 May 2005 19:33:28 -0400 Message-ID: <010901c55681$d52dddd0$022dd6d1@paul> From: To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: sq2000 cooling success ! Date: Wed, 11 May 2005 18:33:26 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0106_01C55657.EBA68730" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_0106_01C55657.EBA68730 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Yes, now when I fly over the nude beaches, I can stare at something else = beside the temp gages. Paul Conner ----- Original Message -----=20 From: Ed Anderson=20 To: Rotary motors in aircraft=20 Sent: Wednesday, May 11, 2005 6:14 PM Subject: [FlyRotary] Re: sq2000 cooling success ! Great to hear, Paul! Now you can use your eyeballs to watch the scenery instead of the temp = gauges {:>) Ed ----- Original Message -----=20 From: sqpilot@bellsouth.net=20 To: Rotary motors in aircraft=20 Sent: Wednesday, May 11, 2005 4:27 PM Subject: [FlyRotary] sq2000 cooling success ! Hi, fellow rotary enthusiasts....I just had to share my rotary = cooling success story. As many of you know, I have an SQ2000 canard with = a belly mounted NACA duct. I decided to try adding VG's in front of the = NACA duct, as several other canardians suggested. Here is a link showing = the VG's and oil flow test. = http://users.telenet.be/westlandfamily/cozy/vg/index.htm I conducted two flights today, one without the VG's, then one with = them added. OAT was 85 degrees, and very humid. (We were sweating just = standing around). On flight one (prior to addition of VG's), climb temps hit 210 = (water temp) and stabilized at 205 at WOT. The highest oil temp during = the flight was 190. I landed, and we riveted on the two aluminum VG's and I took off = again. Water temp during the climb maxed out at 190, and took much = longer to reach those numbers. I raised the nose to climb at 90 IAS = (which I have not done previously) and water temp rose to 195. I lowered = the nose to climb at 100 IAS and the temps came back down to 190. After = leveling off, water temp was 180 at WOT. At approximately 3/4 throttle = (cruise) water temp was stable at 172 at 3000 AGL. After throttling back = for descent, water temps stabilized at 160 where they remained until = landing rollout. During taxi back to the hangar, temps rose back up to = 182. Highest oil temp during this flight (at any configuration) was 182. It seems obvious that the VG's had a positive influence on the = cooling efficiency. I don't profess to understanding exactly how the = VG's trip the air into the NACA duct, or being an expert on VG's or = cooling issues. I am only reporting what worked for me. The addition of = the VG's changed my marginal cooling system into a success story. I should also mention that I did not raise the front nosewheel, = as I wanted to see how it would cool in the worst possible situation, = (ie landing gear motor unable to regtract the gear) and slow climb = speeds. I suspect that on the next flight, when I retract the nosewheel = and attain a higher airspeed (at the same power settings), my temps = might even come down a couple more degrees. I still need to add wheel = pants and clean up the airframe and paint it, but I have finally = attained a cooling system I am very pleased with. Paul Conner, smiling = in Mobile, AL -------------------------------------------------------------------------= --- >> Homepage: http://www.flyrotary.com/ >> Archive: http://lancaironline.net/lists/flyrotary/List.html ------=_NextPart_000_0106_01C55657.EBA68730 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Yes, now when I fly over the nude = beaches, I can=20 stare at something else beside the temp gages.  Paul = Conner
 
----- Original Message -----
From:=20 Ed=20 Anderson
Sent: Wednesday, May 11, 2005 = 6:14=20 PM
Subject: [FlyRotary] Re: sq2000 = cooling=20 success !

Great to hear, Paul!
 
Now you can use your eyeballs to watch the = scenery=20 instead of the temp gauges {:>)
 
Ed
----- Original Message -----
From:=20 sqpilot@bellsouth.net =
To: Rotary motors in = aircraft=20
Sent: Wednesday, May 11, 2005 = 4:27=20 PM
Subject: [FlyRotary] sq2000 = cooling=20 success !

Hi, fellow rotary enthusiasts....I = just had to=20 share my rotary cooling success story. As many of you know, I have = an SQ2000=20 canard with a belly mounted NACA duct.  I decided to try adding = VG's in=20 front of the NACA duct, as several other canardians suggested. Here = is a=20 link showing the VG's and oil flow test. http://= users.telenet.be/westlandfamily/cozy/vg/index.htm
 
I conducted two flights today, one = without the=20 VG's, then one with them added.  OAT was 85 degrees, and very = humid.=20 (We were sweating just standing around).
    On flight one = (prior to=20 addition of VG's), climb temps hit 210 (water temp) and stabilized = at 205 at=20 WOT. The highest oil temp during the flight was 190.
    I landed, and we = riveted on=20 the two aluminum VG's and I took off again.  Water temp during = the=20 climb maxed out at 190, and took much longer to reach those numbers. = I=20 raised the nose to climb at 90 IAS (which I have not done = previously) and=20 water temp rose to 195. I lowered the nose to climb at 100 IAS and = the temps=20 came back down to 190. After leveling off, water temp was 180 at = WOT. =20 At approximately 3/4 throttle (cruise) water temp was stable at 172 = at 3000=20 AGL. After throttling back for descent, water temps stabilized at = 160 where=20 they remained until landing rollout. During taxi back to the hangar, = temps=20 rose back up to 182. Highest oil temp during this flight (at any=20 configuration) was 182.
     It seems = obvious that=20 the VG's had a positive influence on the cooling efficiency.  I = don't=20 profess to understanding exactly how the VG's trip the air into the = NACA=20 duct, or being an expert on VG's or cooling issues. I am only = reporting what=20 worked for me. The addition of the VG's changed my marginal cooling = system=20 into a success story.
     I should = also mention=20 that I did not raise the front nosewheel, as I wanted to see how it = would=20 cool in the worst possible situation, (ie landing gear motor unable = to=20 regtract the gear) and slow climb speeds.  I suspect that on = the next=20 flight, when I retract the nosewheel and attain a higher airspeed = (at the=20 same power settings), my temps might even come down a couple more=20 degrees.  I still need to add wheel pants and clean up the = airframe and=20 paint it, but I have finally attained a cooling system I am very = pleased=20 with.  Paul Conner, smiling in Mobile, AL

>>  Homepage: =20 http://www.flyrotary.com/
>>  Archive:  =20 = http://lancaironline.net/lists/flyrotary/List.html
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