Slide 15 of 28
VEHICLE CONTROL AND AUTOPILOT REQUIREMENTS - Continued
Override Modes provide a safety net for the vehicle. They override any mode of flight to perform self- saving maneuvers. Predictive Ground Collision Avoidance (PGCAS) is one of these modes the will prevent CFIT. The controller can also program in a line-in-the-sky altitude below which the aircraft will not descend, even if commanded. This prevents “heat of the moment” commands that might jeprodize the UCAV. It has been decided to avoid stalls and spins by using control laws to avoid departure conditions. This means commands may be ignored if they violate the “anti stall” laws. Commands or inadvertent entry into these conditions will not be allowed by the flight control system.
Taxi Control is a growth provision in that is not envisioned to be an initial capability. There are several concepts on how to taxi a UCAV. One is to do it via manual control while the operator watches cameras, another is to have it follow a sensor on a “follow me” truck, a third is to have it follow a buried wire in the taxi way, and finally, have a scene matching intelligent agent on board that drives the vehicle.
SIMULATION AND GROUND TESTING CAPABILITIES
Hot Bench - The C/S will have an umbilical to the aircraft and can use the aircraft's systems in a hot bench mode. The hot bench mode has two submodes, one where there is mechanical motion on the vehicle and one where