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Article #6860

Re: Aerospike Engines... what are they?

#6860
From: Herity D.
Date: Mon, 04 Jan 1993 13:44
15 lines
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MUNIZB%RWTMS2.decnet@rockwell.com ("RWTMS2::MUNIZB") writes:

>In an spike nozzle the opposite takes place and the gas flow is directed 
>inward from an annulus at some diameter away from the centerline.  This 
>flow is directly exposed to ambient pressure and its expansion is thus 
>directly coupled to the external environment (continuous altitude 
>compensation with no moving parts).

As I understand it, the exhaust is confined between the spike and the
external airflow. So how can it work in a vacuum ? Can it ?
-- 
-----------------------------------------------------------|"Nothing travels   |
| Dominic Herity,  dherity@cs.tcd.ie,                      |faster than light, |
|Computer Science Dept, Trinity College, Dublin 2, Ireland.|except possibly bad|
| Tel : +353-1-6772941 ext 1720 Fax : +353-1-6772204       |news"-Douglas Adams|
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Message-ID: <1993Jan4.134426.20686@cs.tcd.ie>
Path: arc1-ca.pugleaf.net!sparky!uunet!mcsun!ieunet!tcdcs!dherity
References: <C0907I.69u.1@cs.cmu.edu>

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Newsgroups: sci.space
Path: arc1-ca.pugleaf.net!sparky!uunet!mcsun!ieunet!tcdcs!dherity
From: dherity@cs.tcd.ie (Herity D.)
Subject: Re: Aerospike Engines... what are they?
Message-ID: <1993Jan4.134426.20686@cs.tcd.ie>
Organization: Computer Science, Trinity College Dublin
References: <C0907I.69u.1@cs.cmu.edu>
Distribution: sci
Date: Mon, 4 Jan 1993 13:44:26 GMT
Lines: 15