Return-Path: Received: from slkcpop3.slkc.uswest.net ([206.81.128.3]) by truman.olsusa.com (Post.Office MTA v3.5.1 release 219 ID# 0-52269U2500L250S0V35) with SMTP id com for ; Sun, 29 Aug 1999 17:48:31 -0400 Received: (qmail 7653 invoked by alias); 29 Aug 1999 21:52:11 -0000 Received: (qmail 7647 invoked by uid 0); 29 Aug 1999 21:52:11 -0000 Received: from pppdsla218.slkc.uswest.net (HELO scottdah) (216.160.232.218) by mail.slkc.uswest.net with SMTP; 29 Aug 1999 21:52:11 -0000 Delivered-To: fixup-lancair.list@olsusa.com@fixme From: "Scott Dahlgren" To: "___Lancair list" Subject: dynamic pressure Date: Sun, 29 Aug 1999 15:53:57 -0600 Message-ID: <001401bef268$fec81a80$0200000a@scottdah> Importance: Normal X-Mailing-List: lancair.list@olsusa.com Mime-Version: 1.0 <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> >> Angier, dynamic pressure is equal to 1/2 (air density)x (velocity)^2 at 200 knots IAS this is .94 psi or 1.91" mercury an easy formula for dynamic pressure in inches of mercury is (IAS MPH)^2 /27,700 most formulas I have seen consider air incompressible up to 350 MPH. Scott >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> LML homepage: http://www.olsusa.com/Users/Mkaye/maillist.html