Return-Path: Received: from pop3.olsusa.com ([63.150.212.2] verified) by logan.com (CommuniGate Pro SMTP 3.4.5) with ESMTP id 776070 for rob@logan.com; Wed, 09 May 2001 11:12:43 -0400 Received: from imo-m10.mx.aol.com ([64.12.136.165]) by pop3.olsusa.com (Post.Office MTA v3.5.3 release 223 ID# 0-71175U5500L550S0V35) with ESMTP id com for ; Wed, 9 May 2001 10:45:49 -0400 Received: from PatHABU@aol.com by imo-m10.mx.aol.com (mail_out_v30.10.) id k.d5.648437e (7401) for ; Wed, 9 May 2001 10:52:33 -0400 (EDT) From: PatHABU@aol.com Message-ID: Date: Wed, 9 May 2001 10:52:32 EDT Subject: Lancair TAS corrections To: lancair.list@olsusa.com MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Mailing-List: lancair.list@olsusa.com Reply-To: lancair.list@olsusa.com <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> >> I read with interest Fred Moreno's input on TAS corrections. I flew the SR-71 for over 8 years and we were obviously subject to major errors in the pitot static systems at Mach 3. In fact we disregarded those systems after going through Mach 1 and reverted to a computerized, digital readout instrument called the TDI (Triple Display Indicator). It provided us corrected data for KEAS (knots equivalent air speed), Mach # and altitude. KEAS became our "indicated A/S" while supersonic. Compressibility at over Mach 3, and skin temperatures of over 800 degrees F, call for LARGE corrections. Fortunately, my little 235 works just fine with pitot static stuff. Pat Halloran >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> LML website: http://www.olsusa.com/Users/Mkaye/maillist.html LML Builders' Bookstore: http://www.buildersbooks.com/lancair Please send your photos and drawings to marvkaye@olsusa.com. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>