On Fri, 4 Apr 2003, Randall Clague wrote:
> The engine was an Aerotech L series; only the nozzle was different. It was
> nice little stainless steel cone - not truncated - with 5 nozzles around
> the perimeter. So what I'm hearing is that while this is a plug nozzle,
> and even a spike, it isn't an aerospike. Yes?
Correct. Truncation of the plug is what makes it an aerospike.
With only five nozzles, it is not clear you could make an aerospike work
anyway. You need something close enough to a continuous ring that the
plumes overlap and give the central gas bubble a continuous wall.
Henry Spencer
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