Abstract: A real time reconfigurable, fully integrated, fault tolerant guidance and control system to act in a coordinated fashion to bring a re-entry air vehicle or a UAV to a stop, while keeping it within runway bounds after a high-speed landing.

Abstract: A system and associated method for determining the ground contact status of an air vehicle. The system includes an altitude measurement device; at least one wheel speed sensor; at least one weight-on-wheel sensor; at least one squat switch and a processor for processing useful data from the altitude measurement device, the at least one wheel speed sensor, the at least one weight-on-wheel sensor and the at least one squat switch to manage the status of whether the air vehicle is in contact with the ground based on a ratio of the number of sensors providing useful data to the number of sensors available.

Abstract: Methods and systems for calculating atmospheric vehicle air data are disclosed. In one embodiment, a method of calculating air data includes acquiring one or more pressure measurements at locations on an outer surface of the aircraft; acquiring one or more measurements using an alternate navigation device; computing an indicated air data solution using the one or more measurements obtained using the alternate navigation device and an atmospheric model; computing corrections to the indicated air data solution using one or more other measured parameters, wherein the one or more other measured parameters include at least one of the one or more pressure measurements and the one or more measurements obtained using the alternate navigation device; determining a corrected air data solution using the indicated air data solution and the corrections; and providing the corrected air data solution for use in controlling the aircraft.

Abstract: Methods and systems for calculating atmospheric vehicle air data are disclosed. In one embodiment, a method of calculating air data includes acquiring one or more pressure measurements at locations on an outer surface of the aircraft; acquiring one or more measurements using an alternate navigation device; computing an indicated air data solution using the one or more measurements obtained using the alternate navigation device and an atmospheric model; computing corrections to the indicated air data solution using one or more other measured parameters, wherein the one or more other measured parameters include at least one of the one or more pressure measurements and the one or more measurements obtained using the alternate navigation device; determining a corrected air data solution using the indicated air data solution and the corrections; and providing the corrected air data solution for use in controlling the aircraft.