Northrop-Grumman Corporation 13 December 2011 – 31 January 2012 Total award $16,713 Unmanned Air Systems (UASs) are routinely restricted to fly in low angle-of-attack flight regimes where the vehicle dynamics are predominately linear. While this restriction helps ensure survivability of the vehicle by avoiding nonlinear flight regimes which can lead to departure from controlled flight, … Continue reading Unmanned Air System Departure Resistance Using Nonlinear Two-Time Scale Tracking Control