I think they would be harder to make than getting a bucketload of a fairly
simple shape machined up.
I cant think of any easy way to manufacture a box shape like that without
welding.
The round nozzles could be made on a nice automated lathe/mill type machine
in a continous fashion from bar stock.


-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Pierce Nichols
Sent: Saturday, June 12, 2004 1:50 AM
To: Jake Anderson
Cc: [EMAIL PROTECTED]
Subject: RE: Multiple engines (was RE: [ERPS] Liquox)


On Fri, 2004-06-11 at 05:28, Jake Anderson wrote:
> why would you use square nozles?
> the plates would be laser/water cut (presumably something like 8mm?)
> then a whole bunch of machined up round nozles stuck in

        Well, because flat nozzles (only the throat is square) in this case are
very simple to manufacture... and that's where the benefit comes from.
Your proposal is still subject to the other three loss mechanisms I
pointed out.

        -p


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