Attempting to implement the controller from "Global Incremental Flight Control for Agile Maneuvering of a Tailsitter Flying Wing" from Ezra Tal and Sertac Karaman.
Simulation is an implementation of "Global Singularity-Free Aerodynamic Model for Algorithmic Flight Control of Tail Sitters" from Leandro Ribeiro Lustosa, François Defaÿ, Jean-Marc Moschetta