Ancil Marshall
Guidance Navigation and Controls (GNC) Group Manager
Guidance Navigation and Controls
Aircraft, Spacecraft, Orbital Dynamics
Modeling and Simulation
50 years old
Spring Hill (34609) United States (Florida)
Entrepreneur
Open to opportunities
As a former Guidance, Navigation and Controls (GNC) Group Manager, I led a talented and dynamic team of engineers to deliver innovative aircrafts. I am currently on sabbatical in Europe and the UK, where I am exploring new opportunities in Global Leadership, Management, Finance, and Sustainability.
Possesses over twenty years of Aerospace Engineering, Software and Management experience specializing in aircraft, missiles, rockets, satellites, commercial drones, autopilots for commercial airplanes and autonomy. Expert in a wide-range of GNC responsibilities such as modeling, design, analysis, simulation, integration and flight tests.
Registered Remote Pilot (Drones) in USA, UK, France, Switzerland. Pilots consumer video and FPV drones.
Possesses over twenty years of Aerospace Engineering, Software and Management experience specializing in aircraft, missiles, rockets, satellites, commercial drones, autopilots for commercial airplanes and autonomy. Expert in a wide-range of GNC responsibilities such as modeling, design, analysis, simulation, integration and flight tests.
Registered Remote Pilot (Drones) in USA, UK, France, Switzerland. Pilots consumer video and FPV drones.
Feedback controllers for the stabilization of the angular velocity vector of a rigid
spacecraft using a single-gimbal Variable Speed Control Moment Gyro (VSCMG) are
presented. Linearization of the equations of motion show that complete attitude stabilization
is not possible via linear methods. Nonetheless, it is shown that the linearized
angular velocity equations are controllable, and a simple LQR control law is used to
locally asymptotically stabilize the angular velocity vector. A Lyapunov-based approach
is subsequently used to derive a state feedback control law that globally asymptotically
stabilizes the nonlinear angular velocity system.
AIAA Guidance, Navigation & Control Conference, Austin, TX, 2003
spacecraft using a single-gimbal Variable Speed Control Moment Gyro (VSCMG) are
presented. Linearization of the equations of motion show that complete attitude stabilization
is not possible via linear methods. Nonetheless, it is shown that the linearized
angular velocity equations are controllable, and a simple LQR control law is used to
locally asymptotically stabilize the angular velocity vector. A Lyapunov-based approach
is subsequently used to derive a state feedback control law that globally asymptotically
stabilizes the nonlinear angular velocity system.
AIAA Guidance, Navigation & Control Conference, Austin, TX, 2003
Creation Date
13 Aug 2003