X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from m15.nyc.untd.com ([64.136.22.78] verified) by logan.com (CommuniGate Pro SMTP 4.3c5) with SMTP id 951896 for flyrotary@lancaironline.net; Sat, 21 May 2005 10:30:50 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.136.22.78; envelope-from=jbker@juno.com Received: from m15.nyc.untd.com (localhost [127.0.0.1]) by m15.nyc.untd.com with SMTP id AABBJ8TQ9AQ7GWFA for (sender ); Sat, 21 May 2005 07:29:51 -0700 (PDT) X-UNTD-OriginStamp: Y+Mfppm2QyGfnY/dq+iW1euhVr1em1ELfrh7Wh5fEfQ= Received: (from jbker@juno.com) by m15.nyc.untd.com (jqueuemail) id KTJHKKES; Sat, 21 May 2005 07:28:56 PDT To: flyrotary@lancaironline.net Date: Sat, 21 May 2005 07:33:35 -0400 Subject: Re: [FlyRotary] Re: More MAP measurement questions Message-ID: <20050521.102735.304.21.JBKER@juno.com> X-Mailer: Juno 5.0.33 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary=--__JNP_000_2d7c.14b8.3c73 X-Juno-Line-Breaks: 8-6,7,12-15,19-20,21-32767 From: WALTER B KERR X-ContentStamp: 5:2:100977443 X-UNTD-Peer-Info: 127.0.0.1|localhost|m15.nyc.untd.com|jbker@juno.com This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. ----__JNP_000_2d7c.14b8.3c73 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Jim S wrote: Not sure what difference it would make. Dynamic pressure at 120 kias is a little over 7" of WATER (that's about 0.55" Hg or 0.27 psi. At 150 kias q is 0.87" Hg (0.43 psi). That's if you recover it ALL with NO losses at all. For takeoff purposes, at 60 kias it's 0.068' Hg or 0.137 psi Don't use it all in one place ... Jim S. ------------------------------------------------ The velocity in the tube is much greater than 120 knots I think, although have not calulated it. IF Rusty is not getting significant loss in his system before the static probe then the velocity can be calculated . Divide 30/27=1.11 pressure ratio. Velocity here would be 300 mph! Bernie ----__JNP_000_2d7c.14b8.3c73 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: quoted-printable

Jim S wrote:

Not sure what difference it would make. Dynamic pressure at 120 = kias=20 is a little over 7" of WATER (that's about 0.55" Hg or 0.27 psi. At = 150=20 kias q is 0.87" Hg (0.43 psi). That's if you recover it ALL with NO = losses=20 at all. For takeoff purposes, at 60 kias it's 0.068' Hg or 0.137=20 psi
Don't use it all in one place ... Jim S.

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The velocity in the tube is much greater than 120 knots I think, = although=20 have not calulated it. IF Rusty is not getting significant loss in his = system=20 before the static probe then the velocity can be calculated . Divide 30/27= =3D1.11=20 pressure ratio. Velocity here would be 300 mph!

Bernie

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