Abstract: A method and apparatus for controlling a flight of an aircraft. An undesired change in an airspeed for the aircraft is identified. A number of commands for a flight control system associated with a wing of the aircraft are identified in response to the undesired change in the airspeed. The number of commands is configured to cause the flight control system to maintain a lift of the aircraft for a desired trajectory.

Abstract: Methods, systems, and computer-readable media are described herein for providing flight director guidance throughout a flare maneuver during landing operations. A pre-flare flight path to a runway may be received, and a flare engage altitude calculated. A flare command path may be calculated having a slope associated with a desired descent rate at a desired touchdown location on a runway. An aircraft flare trajectory may be calculated that transitions the aircraft from the flare engage altitude on the pre-flare flight path to the flare command path at the desired touchdown location. A flight director command may be provided during the flare maneuver that aligns a current flight path with the aircraft flare trajectory.

Abstract: A system for use in generating a command trajectory for an aircraft is provided. The system includes a natural frequency determining module configured to determine a closure rate of the aircraft to a selected flight path, compare the closure rate of the aircraft to a threshold closure rate, and calculate a natural frequency based on whether the closure rate is below the threshold closure rate. The system further includes a command processor coupled to the natural frequency determining module and configured to receive the calculated natural frequency from the natural frequency determining module, and generate a command trajectory using the calculated natural frequency.

Abstract: A method and apparatus for a monitoring module. The monitoring module is configured to identify a difference between measured position information for a controller and expected position information for the controller. The monitoring module is configured to compare the difference with thresholds for managing an autopilot in a control system of a vehicle to form a comparison. The monitoring module is configured to manage an operation of the autopilot based on the comparison such that the autopilot remains operating when a backdrive system is inoperative and an intentional override of the autopilot is absent.

Abstract: A system for use in generating a command trajectory for an aircraft is provided. The system includes a natural frequency determining module configured to determine a closure rate of the aircraft to a selected flight path, compare the closure rate of the aircraft to a threshold closure rate, and calculate a natural frequency based on whether the closure rate is below the threshold closure rate. The system further includes a command processor coupled to the natural frequency determining module and configured to receive the calculated natural frequency from the natural frequency determining module, and generate a command trajectory using the calculated natural frequency.

Abstract: A method and apparatus for a monitoring module. The monitoring module is configured to identify a difference between measured position information for a controller and expected position information for the controller. The monitoring module is configured to compare the difference with thresholds for managing an autopilot in a control system of a vehicle to form a comparison. The monitoring module is configured to manage an operation of the autopilot based on the comparison such that the autopilot remains operating when a backdrive system is inoperative and an intentional override of the autopilot is absent.

Abstract: A method and apparatus for controlling a flight of an aircraft. An undesired change in an airspeed for the aircraft is identified. A number of commands for a flight control system associated with a wing of the aircraft are identified in response to the undesired change in the airspeed. The number of commands is configured to cause the flight control system to maintain a lift of the aircraft for a desired trajectory.