Return-Path: Received: from hawk.prod.itd.earthlink.net ([207.217.120.22]) by ns1.olsusa.com (Post.Office MTA v3.5.3 release 223 ID# 0-64832U3500L350S0V35) with ESMTP id com for ; Tue, 5 Sep 2000 02:19:17 -0400 Received: from walter (pool0109.cvx25-bradley.dialup.earthlink.net [209.179.216.109]) by hawk.prod.itd.earthlink.net (8.9.3-EL_1_3/8.9.3) with SMTP id XAA07611 for ; Mon, 4 Sep 2000 23:25:47 -0700 (PDT) Message-ID: <000b01c01703$03e2a660$f92bfea9@walter> From: "Walter Dodson" To: "LancairList" Subject: pounds thrust per HP Date: Mon, 4 Sep 2000 23:31:43 -0700 X-Mailing-List: lancair.list@olsusa.com Reply-To: lancair.list@olsusa.com Mime-Version: 1.0 <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> >> John, Checking my very old Pratt & Whitney Handbook (June 1978), on page 137, the thrust-HP conversion is as follows: one pound of jet thrust is equal to one HP at 375 mph and under static conditions a conversion of 2.5 lbs of thrust per one shaft HP is used. I have ommitted the formula which takes into consideration a propeller efficiency of 80% in the conversion. Walter Dodson >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 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. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>