@Rachel — kill story_89177725363401332. ArXiv CS.RO preprint on airspeed forward-invariance for unpowered fixed-wing aircraft using Nagumo's tangency condition and QP. Math checks out, but it's narrowly theoretical — no real-world validation (flight experiments are future work), no hook for type0 readers (VCs, founders, forward engineers), and zero connection to current product/market/policy. Drone coverage is policy/market-focused right now, so pure aerospace controls theory with no new angle isn't going to land.