X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 25 Apr 2006 00:43:21 -0400 Message-ID: X-Original-Return-Path: Received: from smtp114.sbc.mail.mud.yahoo.com ([68.142.198.213] verified) by logan.com (CommuniGate Pro SMTP 5.0.9) with SMTP id 1079842 for lml@lancaironline.net; Mon, 24 Apr 2006 23:05:07 -0400 Received-SPF: none receiver=logan.com; client-ip=68.142.198.213; envelope-from=elippse@sbcglobal.net Received: (qmail 28399 invoked from network); 25 Apr 2006 03:04:25 -0000 Received: from unknown (HELO Computerroom) (elippse@sbcglobal.net@71.148.3.141 with login) by smtp114.sbc.mail.mud.yahoo.com with SMTP; 25 Apr 2006 03:04:25 -0000 X-Original-Message-ID: <000501c66814$f9585c30$8d039447@Computerroom> From: "Paul Lipps" X-Original-To: "Marv Kaye" Subject: Drag Data X-Original-Date: Mon, 24 Apr 2006 20:04:30 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0002_01C667DA.4C5750C0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2869 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2869 This is a multi-part message in MIME format. ------=_NextPart_000_0002_01C667DA.4C5750C0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Frank! I have never flown around with someone with another 235, so I = have nothing for comparison. I have flown alongside Klaus several times = and he and I had the same IAS/TAS on our systems, with him, of course, = throttled back to stay with me. I have a well calibrated pitot and = static. I've done many two-way runs using my autopilot and altitude hold = to calibrate them vs GPS groundspeed; TAS always comes out within 1 MPH = of GPS GS avg. My two OATs are also mounted out of the airstream, so = they show no stagnation rise and I get correct dalt and TAS. My O-235 = has 9.7:1 pistons, and I get about 125 hp. I get 214 mph TAS at 1000' = dalt, 2950 rpm, 206 mph TAS at 8000' dalt, and 198 mph TAS at 2750 rpm, = 14,500 dalt, 5.7 gph, all when leaned for best power. I designed the = prop to give 200 mph TAS at 2800 rpm, 10,000' dalt; I actually get about = 201 mph TAS. ROC at 1000' dalt, 2430 rpm, 110 mph IAS, 1350 lb is = 1500-1550 ft/min. My induction system gives me the correct pressure = recovery, which is total pressure minus carb drop. Lycoming charts for = the MA-3A shows the carb drop to be 1.1" at 12,500 pressure altitude. I = have 43 gallons total, so I can get 1250-1300 miles with reserves, no = wind, at altitude. I adjust my flap reflex angle to give me the best = speed. Varying it can change speed 3 mph or more from max (8 deg) reflex = when at higher altitude and higher weight. My wing-tip additions = increase my span to 25.2', area to 77.5 sq ft, and AR to 8.17:1. ------=_NextPart_000_0002_01C667DA.4C5750C0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Frank! I have never flown around = with someone with=20 another 235, so I have nothing for comparison. I have flown alongside = Klaus=20 several times and he and I had the same IAS/TAS on our systems, with = him, of=20 course, throttled back to stay with me. I have a well calibrated = pitot and=20 static. I've done many two-way runs using my autopilot and altitude = hold to=20 calibrate them vs GPS groundspeed; TAS always comes out within 1 MPH of = GPS GS=20 avg. My two OATs are also mounted out of the airstream, so they show no=20 stagnation rise and I get correct dalt and TAS. My O-235 has 9.7:1 = pistons, and=20 I get about 125 hp. I get 214 mph TAS at 1000' dalt, 2950 rpm, 206 = mph TAS=20 at 8000' dalt, and 198 mph TAS at 2750 rpm, 14,500 dalt, 5.7 gph, all=20 when leaned for best power. I designed the prop to give 200 mph = TAS at=20 2800 rpm, 10,000' dalt; I actually get about 201 mph TAS. ROC at 1000' = dalt,=20 2430 rpm, 110 mph IAS, 1350 lb is 1500-1550 ft/min. My induction = system=20 gives me the correct pressure recovery, which is total pressure minus = carb drop.=20 Lycoming charts for the MA-3A shows the carb drop to be 1.1" at = 12,500=20 pressure altitude. I have 43 gallons total, so I can get = 1250-1300=20 miles with reserves, no wind, at altitude. I adjust my flap reflex angle = to give=20 me the best speed. Varying it can change speed 3 mph or more from max (8 = deg)=20 reflex when at higher altitude and higher weight. My = wing-tip=20 additions increase my span to 25.2', area to 77.5 sq ft, and AR to=20 8.17:1.
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