That’s the one. There is a video of it somewhere.
good question on “photons”, the article I think clearly demonstrates it’s not particles so I think it is a process of elimination. One of my “anti-particle” rationales has always been that the rocket nozzle is a dead end tunnel. in order for anything to enter it, something else must come out. Logically, if you Have a blast of pressurize gas and particles coming at it, it would likely COMPRESS the air already IN the nozzle, making a dam that would make it challenging for particles to penetrate. The particles would have have both velocity and sufficient mass to overcome the air dam created. For a short gap maybe, long gap I don’t think so.
regarding fuses, you make them sound great. There are lots of GREAT things that seemed frowned upon by NAR and Tripoli (@Steve Shannon
, got an inside scoop on this you can share, or am I out to lunch?). since I am flying, if at all lately, on public land personally I stay within the bounds that I hope are covered by my NAR membership insurance in case of fecal turbine reaction. My suspicion is if something bad happens, even if it is completely unrelated to my transgressing the rule, it may invalidate the insurance. A classic case is self plugged motors, RSOs often nix them, and I am pretty much sure that it is more of an insurance issue than that the RSO really thinks they are unsafe, although I never asked.
the successful static test was horizontal, the failed flight test was vertical (both up and unfortunately down!). Not sure how orientation could come into play, maybe gravity was a factor?
is one of the knowledge founts this forum is blessed with, I recall something about a two stage kit that DID use fuses, so maybe it really would not only be reliable but actually officially “NAR approved”.
i was doing what seemed EXTREME long gap staging. Had to laugh when I read or heard one of TVMs blogs on Apogee that gap staging works up to 11 inches, I had been doing 36” for years without a single failure. Your gaps is pretty short, so your plan likely will work
i believe putting the closer the vent is to the nozzle the more reliable/ideal, but you challenge me and I confess that I haven’t tried vents further away. So “good enough” by definition is “good enough.”
to the chagrin of many of our Air Officer Commanders at USAFA, a common cadet saying was, “if the minimum wasn’t good enough, it wouldn’t be the minimum.” Right up there with “2.0 and go!”
Fair Skies, Light Winds, and numerous Straight Trails to you!