Commercial V-band clamps
Tri Clamps are the sanitary version of the aerospace Marmon clamp and are
COTS on McMaster Carr,etc.
Ken
On Sun, Aug 8, 2021 at 3:58 AM Ben Brockert <wikkit@xxxxxxxxx> wrote:
For a liquid engine with ports up to an inch, it seems fairly common
to have male AN fittings welded or machined to the engine, then tubes
from there to the valves or whatever. Larger than an inch various
kinds of V clamp work well. Armadillo used sanitary fittings where
there is a great system of startlingly cheap parts because they're
used by every brewery and dairy in the US. Multiple sizes of adapters
for hoses and tubes and pipes are available for a given flange size.
Beyond that, and more flight weight, there are V-band clamp systems
meant for hot gas plumbing that can be adapted for use with cryogenic
liquids; it seems like every organization ends up redesigning them.
Commercial V-band clamps meant for plumbing are big and light enough
that they could be used to attach the payload or recovery bay to the
motor side of a high power rocket, like a COTS version of Marman
clamps as used in satellites.
If you are just asking about the oxidizer line up to a hybrid
injector, it would be interesting to see more work on getting a better
injector pattern than just a jet of propellant out a quarter inch hole
as is standard on the U-C "valve". Probably someone has done it and
maybe someone here can share photos or results, but one idea would be
to have the single fat jet in a big swirl injector so that at least
the nitrous is in a nice big cone before it interacts with the fuel
grain. It could also put the injector out of phase with the
instability if designed right.
On Sun, Aug 8, 2021 at 12:09 AM Jack Hanna <jackhannaofficial@xxxxxxxxx>
wrote:
threaded together or is there some specification? I'm assuming there's
What's the standard for connecting fuel lines to injectors, is it just
something more for safety but I can't for the life of me find anything so
far and the papers and videos i'm seeing aren't going in depth. And
personally i'm looking for some design that's machineable but I'm coming up
with nothing for this specific part of the design.
