Presently disclosed systems and methods are configured for in-flight retrieval of unmanned aerial vehicles (UAVs). Such systems generally include a retrieval ramp, a tether system including a tether, and a capture connector. The retrieval ramp is configured to be moved between a stowed configuration and an extended configuration, in which at least a portion of the retrieval ramp is positioned outside the aircraft for retrieval of the UAV. The tether system is moveable to a capture configuration, in which a terminal tether end of the tether is positioned beyond a terminal end of the retrieval ramp, typically outside of turbulence generated by the aircraft. The system is configured to position the retrieval ramp, the tether system, and the capture connector in order to engage the UAV with the capture connector. Once captured, the system may move the UAV into the aircraft as the tether is retracted towards a retracted configuration.

A modular Unmanned Aerial System (UAS) has first and second flight configurations, and includes an Unmanned Aerial Vehicle (UAV) parent module and a plurality of UAV child modules. The parent module may have a fuselage, forward and aft wings connected to the fuselage, and a first plurality of flight propulsion devices. The child modules have a corresponding second plurality of flight propulsion devices. Each child module docks wingtip-to-wingtip with the parent module or an adjacent edge of a child module using the docking mechanisms. The child modules undock and separate from the forward wing and each other, and achieve controlled flight independently of the parent module while in the second flight configuration. A method for controlling the modular UAS is also disclosed.

A system for bistatic radar target detection employs an unmanned aerial vehicle (UAV) having a ramjet providing supersonic cruise of the UAV. Deployable antenna arms support a passive radar receiver for bistatic reception of reflected radar pulses. The UAV operates with a UAV flight profile in airspace beyond a radar range limit. The deployable antenna arms have a first retracted position for supersonic cruise and are adapted for deployment to a second extended position acting as an airbrake and providing boresight alignment of the radar receiver. A mothership aircraft has a radar transmitter for transmitting radar pulses and operates with an aircraft flight profile outside the radar range limit. A communications data link operably interconnects the UAV and the tactical mothership aircraft, transmitting data produced by the bistatic reception of reflected radar pulses in the UAV radar antenna to the mothership aircraft.

A system for bistatic radar target detection employs an unmanned aerial vehicle (UAV) having a ramjet providing supersonic cruise of the UAV. Deployable antenna arms support a passive radar receiver for bistatic reception of reflected radar pulses. The UAV operates with a UAV flight profile in airspace beyond a radar range limit. The deployable antenna arms have a first retracted position for supersonic cruise and are adapted for deployment to a second extended position acting as an airbrake and providing boresight alignment of the radar receiver. A mothership aircraft has a radar transmitter for transmitting radar pulses and operates with an aircraft flight profile outside the radar range limit. A communications data link operably interconnects the UAV and the tactical mothership aircraft, transmitting data produced by the bistatic reception of reflected radar pulses in the UAV radar antenna to the mothership aircraft.

An apparatus is provided for dynamically controlling airflow behind a carrier aircraft to redirect air flow during an in-flight recovery of an unmanned aerial vehicle (UAV). The apparatus comprises a frame attached to an end portion of an arm member extending from the carrier aircraft. The apparatus comprises a plurality of vanes disposed within the frame. Each vane is controllable between an opened position and a closed position to dynamically modify the airflow behind the carrier aircraft during the in-flight recovery of the UAV. Alternatively, or in addition to, the apparatus comprises a plurality of compressed air jets disposed on the frame, wherein each jet is controllable to provide active airflow to dynamically modify the airflow behind the carrier aircraft during the in-flight recovery of the UAV.

Disclosed herein are a vehicle system and method for VTOL. The vehicle system includes: a carrier vehicle and a cruise vehicle. The carrier vehicle includes one or more fuselages, one or more wings, one or more attach units coupled to the one or more fuselages or to the one or more wings, and propulsion systems operable to provide, at least, substantially vertical thrust and substantially horizontal thrust. The cruise vehicle includes one or more fuselages for carrying passengers or cargo and one or more wings. The one or more attach units of the carrier vehicle are adapted to couple to the cruise vehicle to detachably engage.

Disclosed herein are a vehicle system and method for VTOL. The vehicle system includes: a carrier vehicle and a cruise vehicle. The carrier vehicle includes one or more fuselages, one or more wings, one or more attach units coupled to the one or more fuselages or to the one or more wings, and propulsion systems operable to provide, at least, substantially vertical thrust and substantially horizontal thrust. The cruise vehicle includes one or more fuselages for carrying passengers or cargo and one or more wings. The one or more attach units of the carrier vehicle are adapted to couple to the cruise vehicle to detachably engage.

A system for delivering objects from a fixed-wing aircraft has a first tether having a connector on a deployed end, an anchor apparatus fixed to a point on the ground, a slide ring assembled over the first tether, a drag line connected to the slide ring by one end, and a drag-producing device connected to at a second end, and an object carrying apparatus connected by a support line. The aircraft is flown at an altitude in an orbit at a diameter and a speed such that the deployed first tether assumes a spiral pattern. An object is placed in the object-carrying apparatus and released from the aircraft, with the slide ring guiding along the first tether, and the drag-producing element slows descent of the object in the carrying apparatus in the spiral pattern until the object reaches the ground, where the object is removed from the object-carrying apparatus.

A system for delivering objects from a fixed-wing aircraft has a first tether having a connector on a deployed end, an anchor apparatus fixed to a point on the ground, a slide ring assembled over the first tether, a drag line connected to the slide ring by one end, and a drag-producing device connected to at a second end, and an object carrying apparatus connected by a support line. The aircraft is flown at an altitude in an orbit at a diameter and a speed such that the deployed first tether assumes a spiral pattern. An object is placed in the object-carrying apparatus and released from the aircraft, with the slide ring guiding along the first tether, and the drag-producing element slows descent of the object in the carrying apparatus in the spiral pattern until the object reaches the ground, where the object is removed from the object-carrying apparatus.

The present disclosure provides various embodiments of a multicopter-assisted launch and retrieval system generally including: (1) a multi-rotor modular multicopter attachable to (and detachable from) a fixed-wing aircraft to facilitate launch of the fixed-wing aircraft into wing-borne flight; (2) a storage and launch system usable to store the modular multicopter and to facilitate launch of the fixed-wing aircraft into wing-borne flight; and (3) an anchor system usable (along with the multicopter and a flexible capture member) to retrieve the fixed-wing aircraft from wing-borne flight.