Re: Concorde's Engines

Date:         18 Jun 99 01:39:23 
From:         Brad Crosier <>
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Gregory Travis wrote:

> I've always wondered about that.  How does the >INLET< produce thrust?

My understanding is it's a bit of a misnomer.  The inlet doesn't
actually produce thrust, but it does act as a compressor (with no moving
parts, save the "spike," which moves fore and aft).  The spike triggers
a sonic shockwave, which is reflected down through the inlet.  As
airflow crosses a shockwave, it's velocity decreases and it's pressure
increases - the same as when it goes through a compressor stage of the
turbine engine.