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Article #3892Re: Jet engine
From: RT
Date: Sun, 08 Apr 2001 22:28
Date: Sun, 08 Apr 2001 22:28
31 lines
2587 bytes
2587 bytes
Stealth Pilot wrote: > > On Sat, 7 Apr 2001 08:13:13 +1000, "RT" <r.thomas@cqu.edu.au> wrote: > >How many stages and axial or centrifugal, d'y'know? > > > Chris has done some really cunning engineering of the unit and it is > in low volume commercial production. I dont want to steal his smarts. > It is a single stage centrifugal compressor with one power rotor. Ta. Expected that but from what you were saying thort he might've got *really* fancy :-) > a german bearing maker to make him ceramic ball races to his required > dimensions. they cost *him* over $70 a pop. no further problem. > > I asked him how tough the ceramic balls were so he got one out and > laid it on the tang of a Dawn vice and gave it one unholy thump with a > large ball pein hammer (like *really* laid into it). he now has a ball > pein hammer and a vice, each setup as an aircraft rivet set :-) > never even looked like breaking. Strewth! Mmm - s'pose you would run those ceramic bearings dry, which would simplify things a lot... > If I tell you any more it is the firing squad for you. His phone > number (I think) is in the reply to phils' query. Yeah it was but I'll leave him in peace - interest was merely engineering curiosity - not commercial :-)
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: fd648,389a040b2282aa91 X-Google-Attributes: gidfd648,public X-Google-Thread: 1153d9,389a040b2282aa91 X-Google-Attributes: gid1153d9,public X-Google-ArrivalTime: 2001-04-08 15:32:59 PST Path: arc1-ca.pugleaf.net!supernews.google.com!sn-xit-02!supernews.com!nntp-relay.ihug.net!ihug.co.nz!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!news.mel.connect.com.au!newshub1.rdc1.nsw.optushome.com.au!news1.optus.net.au!optus!bunyip.cc.uq.edu.au!news.cqu.edu.au!not-for-mail From: RT <r.thomas@cqu.edu.au> Newsgroups: aus.science,aus.aviation Subject: Re: Jet engine Date: Mon, 09 Apr 2001 08:28:50 +1000 Organization: Central Queensland University Lines: 31 Message-ID: <3AD0E622.43CF3DB8@cqu.edu.au> References: <Irfy6.8209$45.48400@newsfeeds.bigpond.com> <3ACBF54C.EEE8BD14@fang.omni.com.au> <3acdac46.8232385@news.iinet.net.au> <9algoo$hd5$1@spider.cqu.edu.au> <3acede08.997608@news.iinet.net.au> NNTP-Posting-Host: 138.77.10.251 Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Trace: spider.cqu.edu.au 986769178 17266 138.77.10.251 (8 Apr 2001 22:32:58 GMT) X-Complaints-To: usenet@spider.cqu.edu.au NNTP-Posting-Date: 8 Apr 2001 22:32:58 GMT X-Mailer: Mozilla 4.76 [en] (Win95; U) X-Accept-Language: en