Great, thank you very much
Jon
On Tue., 12 Oct. 2021, 05:36 roxanna Mason, <rocketmaster.ken@xxxxxxxxx>
wrote:
Hi Jon, we just went through this same question last year with a 1.5 KLbF
LOx/Kero ablative engine and if money isn't a factor, Nickel 200 is the
best.
2nd choice is copper alloy 145, an order of mag cheaper than Ni-200. This
grade of copper is 4x stronger than OFHC copper but still retains 90% of
its conductivity. You can buy it on eBay.
Aluminum may work depending on your injector design but if you want the
highest probability of success on your first test then why take chances.
You can always build a 2 nd injector later for flight. All the pros use
Ni-200 and copper as they did with the F-1. The latter was reinforced from
the back with a stainless steel LOx dome.
Good luck,
Ken
On Mon, Oct 11, 2021 at 11:53 AM Jonathan Adams <jonadams2002@xxxxxxxxx>
wrote:
Hi all,
I just wanted to ask from the wealth of experience here what materials
people prefer to use in an liquid propellant injector.
The engine I'm working on now runs Jet-A and LOX at 350 psi and r = 2.3
(when operating at its limit). For reasons relating to cost I've so far
been looking at 6061-T6 aluminum, but I'm now wondering whether that's the
right choice.
Is there a grade of copper that is preferable for something like this?
Can aluminum get the job done?
Thanks,
Jon