Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site h-sc1.UUCP Path: utzoo!watmath!clyde!burl!ulysses!bellcore!decvax!genrad!panda!talcott!harvard!h-sc1!morgan From: morgan@h-sc1.UUCP (windsor morgan) Newsgroups: net.columbia Subject: Re: Thrust percentage Message-ID: <909@h-sc1.UUCP> Date: Tue, 4-Feb-86 23:43:19 EST Article-I.D.: h-sc1.909 Posted: Tue Feb 4 23:43:19 1986 Date-Received: Fri, 7-Feb-86 09:42:14 EST References: <902@h-sc1.UUCP> Distribution: net Organization: Harvard Univ. Science Center Lines: 56 In <902@h-sc1.UUCP> I asked: > > This has probably been discussed before, but as I have never read this > group before today, I would like to know exactly what the thrust > percentage is of. That is, what is the '104%' 104% **of**? When I first > heard this on earlier shuttle flights, I thought that it meant that the > shuttle was performing better than specifications, but during the ascents, > the thrust **always** goes as high as 104%. Why this and not 100%? > > I hope this is understandable. Please mail me the answer. Thanks. I received a number of replies, and the gist of it is that people think that the percentage refers to the original specifications: ---------------------(Message 1) From: harvard!topaz!nike!riacs!aurora!eugene (Eugene miya) To: ames!riacs!nike!topaz!harvard!h-sc1!morgan You will probably get a ton of these. The shuttle engines are rated about 119% of some original spec. We are working on improvements to take them even higher. The original spec has long since been dropped. --eugene miya NASA Ames Research Center {hplabs,hao,dual,ihnp4,vortex}!ames!aurora!eugene eugene@ames-nas.ARPA -----------------------(Message 2) From: ingham To: unmvax.ARPA!lanl!cmcl2!harvard!h-sc1!morgan Organization: University of New Mexico, Albuquerque the thrust is compared to the thrust produced by Columbia's original main engines. The engines have since been improved and can produce more thrust. Kenneth Ingham, UNM Computing Center, Albuquerque, NM 87131, 505-277-8044 ~{pur-ee!purdue,ucbvax!lbl-csam,philabs!cmcl2}!lanl!unmc!ingham ~{convex,ucbvax,gatech,csu-cs,anl-mcs}!unmvax!unmc!ingham -------------------------------- Thanks a lot for your help in answering this question. -- 'Verily, there be no leader as wise as the Vision!' Windsor Morgan Harvard College Cambridge, MA 02138 {decvax,ihnp4}!seismo!harvard!{h-sc1,h-sc4}!morgan OR {harvard,allegra,genrad,ihnp4}!wjh12!cfa!morgan