That's the sticky part for me. Corkscrew isn't very defined, and net straight isn't exactly an optimal profile. (adding in your note about weathercock tendencies too)
Does this scale? Is it only safe because they're small crunchable rockets? Would this corkscrew become coning and destruction at higher speeds/power levels? When does the entertaining and safe become "Oh crap, that could have been bad" Are their any guidelines for how much asymmetry is acceptable before things go pear-shaped? And is there any way to predict the behavior analytically beyond a mindsim and push-the-button-and-pray?
I'll admit, the horizontal recovery is cool.
concur with above. I have probably done 100 scratchers, only two have been midpower, and in one of those I accidentally glued the motor in, so it was one and done (but looks nice dangling from ceiling in my Rocketry build room.)
Inspiration was one of our own, Bruce Levison, who passed away recently from a Covid 19
https://www.rocketryforum.com/threads/we-lost-one-of-our-own-bruce-levison.158724/
I never met him but sounds like he was an impressive individual
He designed the “Cork Screw” for FlisKits, eventually marketed by JonRocket.com. Odd’l Rockets
https://modelrocketbuilding.blogspot.com/2011/03/corkscrew-2-build-backstory.html
https://modelrocketbuilding.blogspot.com/2011/03/corkscrew-2-build-finished.html
I don’t rarely fly above a D, my one G was for 2014 box o parts contest (accidentally glued motor in,
, one and done but looks good dangling from my ceiling, Called it Buzzed Lightyear as liquor bottles were a mandatory part.)
Vast majority of my “questionable” models are flown with just me and nobody else around. While I have had some less than nominal flights, only one of my Asymmetric fin models did so, and it was on an A.
Agree, upscaling risking, certainly would run some test models before trying to go big. I am afraid the rotational forces of Cork Screwing alone might tear a mid or high power rocket apart.
Aside from the Cork Screw, which is perfectly named, my favorite is the Squirrel, which flies just like you would expect a good squirrel rocket to Do !