On 2/12/2018 9:40 AM, Norman Yarvin wrote:
On Mon, Feb 12, 2018 at 12:00:27AM -0500, Henry Spencer wrote:
On Sun, 11 Feb 2018, Henry Vanderbilt wrote:
As for XCOR's non-coking kerosene tech, not magic, just one of a lot of
areas where they applied clever lateral thinking to a common problem.
No surprise there... but it doesn't change the bottom line. Whether you
call it magic or clever lateral thinking, it's something that someone else
with a desire for non-coking kerosene can't necessarily duplicate on
command.
I'm guessing that XCOR's lack of coking problems were largely because
they consistently applied purges right after shutdown, with nitrogen
gas or similar, to flush out remaining kerosene before it could
overheat and coke.
(Just a guess, but the XCOR folks have mentioned purges quite a lot.)