On Mon, 9 Sep 2002, John Carmack wrote:
> For monoprop use, you can make reasonable arguments for flange-at-top vs
> flange-at-bottom (our early foam engines were flange-at-top), but for
> experimental biprop work, separate cat packs and nozzles makes a lot of
> sense...
Also for experimental biprop work, it might be worth making an extender
ring (bolts to the cat pack on one end, provides the same flange on the
other end) or two, to experiment with different chamber lengths. If a
longer chamber improves performance, you need to work on more efficient
mixing.
Henry Spencer
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