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Questions for future iterations:
- There seems to be a tolerance stack-up between the pintle-baseplate face seal and the taper; I want the seal to be compressed to the requirement but also want the center body taper to press down on the baseplate taper. I would prioritize the taper-taper interface, because that O-ring only serves to stop igniter exhaust from traveling radially outward through the pintle flange. If I didn't have an O-ring there, nothing would be compromised, but that feels sus...OH WAIT, pressure/gas from the chamber is going to travel upwards and leak...damn looks like I gotta fix this
- Is a plate before the nitrous orifices necessary? I've seen it in a lot of designs
- What angle should the nitrous holes be at to get a good momentum ratio?
- How easy will it be to drill those angled holes?
- What is the optimal skip length (distance from annulus exit to pintle tip exit)/a rule of thumb for the skip length?
- For some pintles, I've seen the bottom face of the baseplate be slanted – is there any advantage to this? Perhaps if the taper is parallel to the spray angle it will prevent hotspot accumulation on the sides?