Probably right at one time until Waldo Stakes stole 10 LR-101's from me in
2010. But before that I tested the engine first in 1970, to see LR-101
firings in clusters of 4 and singly as well as tons of Truax stuff check
out the site.
neverworld.net
The TCA is made of nickel plated 4130 high carbon steel and injector of
6061-T6 aluminum. Buna-N o-rings seal the fuel annulus at the TCA/injector
interface
and there were 2 different style injectors, 1 and a 2 piece. The later had
different LOx seals but we changed them out with a spring energized lip
seal from Bay Seal near San Francisco. The 1 piece had the LOx dome brazed
to the injector faceplate.
Carl (on aR) with Flowmetrics in San Diego has cloned the injector and flys
LR-101's at MTA.
Good luck,
Ken
On Tue, Aug 4, 2020 at 4:32 AM Jonathan Adams <jonadams2002@xxxxxxxxx>
wrote:
Someone told me arocket had the highest density of Rocketdyne LR-101
owners on the internet, so I figured this would be the best place to ask
about what kind of steel alloy(s) the engine uses.
I read somewhere that the LR-101 was made from austenitic CRES-347, while
another said it was made from chrome-moly 4130 steel. Does the engine use
both?
I understand 347 is probably the better option for cryogenics, as mild
steels generally don't take well to that, but the 4130 has thermal
conductivity that the stainless steel doesn't. It's hard to pin down any
answer...
Thanks!
