Abstract: A hierarchical high integrity system is disclosed. The system may include one or more operator input interfaces configured to receive one or more operator commands from an operator. The system may further include a hierarchy of a plurality of functional layers configured to perform one or more functions in response to the one or more operator commands. The hierarchy of the plurality of functional layers may include one or more upper functional layers and one or more lower functional layers. The one or more upper functional layers may configured to provide a greater level of automation than the one or more lower functional layers. Each functional layer may include a plurality of applications; an arbitrator configured to dynamically select the appropriate input source; an application selector configured to dynamically select an application; and a default safe fallback module configured to selectively provide a substantially safe operation for each functional layer.

Abstract: Safe practical autonomy is ensured by encapsulating an unreliable or untrusted machine learning algorithm within a control-based algorithm. A safety envelope is utilized to ensure that the machine learning algorithm does not output control signals that are beyond safe thresholds or limits. Secure practical autonomy is ensured by verification using digital certificates or cryptographic signatures. The verification may be for individual partitions of an autonomous system or apparatus. The partitions include trusted and untrusted partitions. Trusted partitions are verified for security, while untrusted partitions are verified for safety and security.

Abstract: Systems for mobile launch and retrieval of unmanned aircraft systems (UAS) include a rail-based, ground-based, or water-based mobile platform carrying a mobile station for launching and retrieving vertical take-off and landing (VTOL) or non-VTOL UAS while the platform is in motion, based on current position and weather conditions. The mobile platform may include facilities for communicating with the airborne UAS, stowing a retrieved UAS, and reloading/refitting a stowed UAS. The mobile platform may include positionable wake control devices and a partially positionable launch and retrieval mechanism for alleviating turbulence or crosswinds. The mobile platform may include long-range sensors for detecting or identifying obstacles near a rail-based platform that may interfere with the operating envelope of the launch and retrieval mechanisms. The launch and retrieval system may be intermodal and scalable either up or down as mission parameters demand.

Abstract: An intercepting vehicle, which is being towed by a towing vehicle, may home in on and attach to a retrievable vehicle that catches up to the intercepting vehicle from behind. Then, the intercepting vehicle, with the retrievable vehicle docked thereto, may be brought to the towing vehicle by reeling in the intercepting vehicle with the retrievable vehicle docked thereto.

Abstract: An intercepting vehicle, which is being towed by a towing vehicle, may home in on and attach to a retrievable vehicle that catches up to the intercepting vehicle from behind. Then, the intercepting vehicle, with the retrievable vehicle docked thereto, may be brought to the towing vehicle by reeling in the intercepting vehicle with the retrievable vehicle docked thereto.

Abstract: An intercepting vehicle, which is being towed by a towing vehicle, may home in on and attach to a retrievable vehicle that catches up to the intercepting vehicle from behind. Then, the intercepting vehicle, with the retrievable vehicle docked thereto, may be brought to the towing vehicle by reeling in the intercepting vehicle with the retrievable vehicle docked thereto.

Abstract: An at least partially self-propelled vehicle is configured for being towed by a towing vehicle, by way of a tow line. Operation of the vehicles may be coordinated so that, for a length of the tow line that connects the vehicles, the length of the tow line is curved in a manner that inhibits the tow line from transferring oscillatory motion between the vehicles while the entirety of the length of the tow line may be under tension.