/sci/ - Science & Math

I crudely extended the chamber and switched to autogenously pressurized propane. Tested a few days ago with somewhat disappointing results. The flowrate of propane is way lower that I was expecting. I think either my new fuel solenoid (I fried one yet again, so I had a new one for this test, this time from a cheaper brand) is really restrictive, or there's a clog in by old propane lines I re-used. It made several very loud pops, but did not sustain itself.

I'm going to troubleshoot the lines and solenoid and try again at some point. Also going to make a new throat and nozzle while I'm at it. This one isn't quite optimized for the lower chamber pressure.