Got it. Thanks.
George William Herbert
Sent from my iPhone
On Jul 5, 2016, at 9:56 AM, Ed LeBouthillier <codemonky@xxxxxxxxxxxxx> wrote:
George Herbert asks:
Can someone illustrate the spiral grain configuration referred to here?
Thanks...
Probably the best illustration is visible in the patent:
https://www.google.com/patents/US3496870
What I was saying is that you have several degrees of freedom in the design
that you don't have with an end-burner.
If you reduce the thickness of each slice of the spiral (and thereby reduce
the
diameter), then you can make up for the area (to get the target thrust) by
increasing the length of the grain.