Your attention is presented to the futuristic VTOL aircraft that are well suited to the style of the game. The mod includes aircraft: transport, light combat, heavy combat.
For any of the aircraft in this mod, using the tank cannon instantly kills the player and aircraft.
Also, the cargo ship has a single visible Spidertron leg. This made me realize that all of the aircraft in this mod are based on spidertron prototypes.
Sidenote, I'm happy that you've made this mod, and I plan to add support for it to my fork of "Aircraft."
Both fixed in 1.2.1. I think the tank cannon was colliding with the aircraft's 'leg'. I've now removed all collision from the leg - although this means that possibly they can't be damaged, which isn't great. I'll have to rethink this later in the week.
I actually was going to post about this earlier, all explosives were doing it for me. Regular tank shells or rockets never hit my aircraft, but using explosive ammunition would cause damage to the aircraft in impact in close proximity. I nearly took out my own aircraft while circling nests and the rockets would clip rocks/trees (Which was also partially because of the combat overhaul at the same time I think)
This is a new problem in 2.0 right? I think actually just giving the aircraft legs 100% explosion resistance will be a better solution. I believe spidertron legs have that too. It will still mean that some cannon shots collide with the leg and so are wasted, but that isn’t so bad. It was only ~20% in my testing. Or I go further and make the legs not collide with cannon shots specifically (which I’ve done before: https://github.com/tburrows13/SpidertronWeaponSwitcher/blob/master/data-final-fixes.lua)