The terminal velocity manifold in extended phase space for a airfoil with the lift and drag characteristics of a NACA-0012 airfoil from [1]. The blue points along the manifold represent stable equilibrium points and the red points represent saddle equilibria. Blue and red values along the manifold show the magnitude of acceleration.
[1] Nave Jr., Gary K. and Ross, Shane D. (2018) “Global phase space structures in a model of passive descent.” arXiv preprint arXiv:1804.05099 https://arxiv.org/abs/1804.05099