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.
Senior Guidance Navigation and Controls Engineer
Orbital ATK (Northrop Grumman)
April 2005
to July 2013
Chandler, AZ
- GNC Engineer on GQM-163A missile. Managed linear analysis tools, conducted nonlinear 6DOF simulations in C++, performed vehicle integration tests, investigated flight anomalies and recommended software fixes.
- Lead GNC Engineer for High Diver variant of GQM-163A. Performed GNC design from the initial concept to the eventual launch.
- Lead GNC Engineer on FFMS variant of GQM-163A. Traveled to Ile du Levant, France to perform launch operations.
- Parameterized GQM's time-scheduled flight gains to a Mach and mass-based adaptive algorithm.
- Developed various guidance algorithms for the High Diver variant of GQM to improve its performance and robustness.
- Created Simulink model of the High Diver gas generator, which successfully matched motor tests.
- Worked with aerodynamics group to simplify a 5D High Diver model into a 2D model in order to embed the reduced model in flight software.
- Performed independent reviews of the Minotaur I, Pegasus and Antares rockets, the Orbital Boost Vehicle, and the Patriot Target Vehicle.
- Lead GNC Engineer for Zombie Pathfinder program, a single-stage and a two-stage ballistic missile for NASA's Sounding Rocket Program. Performed initial design trades, improved 6DOF nonlinear simulations.
- Mentored other engineers in GNC and C/C++ 6DOF simulation. Taught GNC course to a group of forty engineers.
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