Return-Path: Received: from pop3.olsusa.com ([63.150.212.2] verified) by logan.com (CommuniGate Pro SMTP 3.5.2) with ESMTP id 1024612 for rob@logan.com; Sun, 13 Jan 2002 21:39:52 -0500 Received: from pop009pub.verizon.net ([206.46.170.236]) by pop3.olsusa.com (Post.Office MTA v3.5.3 release 223 ID# 0-71866U8000L800S0V35) with ESMTP id com for ; Sun, 13 Jan 2002 20:45:13 -0500 Received: from GCasey (calnet31-66.gtecablemodem.com [207.175.254.66]) by pop009pub.verizon.net with SMTP for ; id g0E1kaBP000771 Sun, 13 Jan 2002 19:46:38 -0600 (CST) Reply-To: Reply-To: lancair.list@olsusa.com From: "Gary Casey" To: Subject: Physics Date: Sun, 13 Jan 2002 17:45:04 -0800 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Importance: Normal In-Reply-To: <20020113061750.AAA21752@pop3.olsusa.com> X-Mailing-List: lancair.list@olsusa.com <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> >> Very good description, Brent. A couple of corrections for what are probably typos: One pound force will accelerate one slug of mass at the rate of 1 foot/second^2. Therefore one slug will exert approximately 32.2 pounds of force on the earth (any mass when exposed to only gravitational force will accelerate downward at 32.2 ft/sec^2). Also, gravitational force is inversely proportional to the square of the distance, not proportional. I am still wondering how to estimate the static thrust of a propeller... Gary Casey ES project >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> LML website: http://members.olsusa.com/mkaye/maillist.html LML Builders' Bookstore: http://www.buildersbooks.com/lancair Please remember that purchases from the Builders' Bookstore assist with the management of the LML. Please send your photos and drawings to marvkaye@olsusa.com. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>