X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 08 May 2008 08:42:42 -0400 Message-ID: X-Original-Return-Path: Received: from smtp115.sbc.mail.sp1.yahoo.com ([69.147.64.88] verified) by logan.com (CommuniGate Pro SMTP 5.2.3) with SMTP id 2912520 for lml@lancaironline.net; Wed, 07 May 2008 14:59:14 -0400 Received: (qmail 46611 invoked from network); 7 May 2008 18:59:13 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=sbcglobal.net; h=Received:X-YMail-OSG:X-Yahoo-Newman-Property:Message-ID:From:To:Subject:Date:MIME-Version:Content-Type:X-Priority:X-MSMail-Priority:X-Mailer:X-MimeOLE; b=BFMe6X+60ZcDsTN3/duoFMMVqU+HvlAUcE8OycnzVU8AiuhrGWMXPlNHP5uPYq8uT3+6xS1YbkFiY5LUM0B8iz6VaIk1UO6P/8UcGXkpIkJY/EHe6GM8jyK0BS/sTRiekm3nrk87zHWj2ISrS0M5CQ+FP1P3VQ6xgD3Gih5p3Cs= ; Received: from unknown (HELO Computerroom) (elippse@sbcglobal.net@75.15.118.117 with login) by smtp115.sbc.mail.sp1.yahoo.com with SMTP; 7 May 2008 18:59:12 -0000 X-YMail-OSG: FsfmbhYVM1nCWzTMfc8LtAXx7hEyR_LGXmgg_mfOjsTj3kvE45Y9Y90nA6meMmIwcOIYlFnkF9QZL54yQJYBIgnqezpOV_wzDiyUFjHVKbx3qRTPzlut3XuxaKrFDsqrebY- X-Yahoo-Newman-Property: ymail-3 X-Original-Message-ID: <000a01c8b074$72125c80$75760f4b@Computerroom> From: "Paul Lipps" X-Original-To: "Marv Kaye" Subject: O-320 TAS X-Original-Date: Wed, 7 May 2008 11:59:13 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0007_01C8B039.C46CD3B0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 This is a multi-part message in MIME format. ------=_NextPart_000_0007_01C8B039.C46CD3B0 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable Chris: I have these estimated HP numbers for Oscar's plane with the = ELIPPSE two-blade: 242 mph TAS, 1000' dalt, 3200 rpm, 197 HP; 240 mph = TAS, 3150 rpm, 5500' dalt, 166 HP; 233 mph TAS, 3090 rpm, 10,000' dalt, = 137 HP. 'Don't know how I got these numbers; 'probably a linear = interpolation of rpm based on a constant torque over the range at the = charge density at altitude. My 125 HP O-235 Lancair with its 3-blade = ELIPPSE prop cruises at 206 mph TAS at 5500'dalt at 2880 rpm; the = sea-level rated rpm on this engine is 2800 rpm, so that 2880 is only = 2.9% above rated. It goes about 213-214 TAS at 1000' dalt at 2950 rpm; = again, that is about 5.4% above sea-level rated rpm! ------=_NextPart_000_0007_01C8B039.C46CD3B0 Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable
Chris: I have these estimated HP numbers for = Oscar's plane=20 with the ELIPPSE two-blade: 242 mph TAS, 1000' dalt, 3200 rpm, 197 HP; = 240 mph=20 TAS, 3150 rpm, 5500' dalt, 166 HP; 233 mph TAS, 3090 rpm, 10,000' dalt, = 137 HP.=20 'Don't know how I got these numbers; 'probably a linear interpolation of = rpm=20 based on a constant torque over the range at the charge density at = altitude. My=20 125 HP O-235 Lancair with its 3-blade ELIPPSE prop cruises at = 206 mph=20 TAS at 5500'dalt at 2880 rpm; the sea-level rated rpm on this engine=20 is 2800 rpm, so that 2880 is only 2.9% above rated. It goes about=20 213-214 TAS at 1000' dalt at 2950 rpm; again, that is about 5.4% = above=20 sea-level rated rpm!
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