A recovery system for recovering an autonomous underwater vehicle from a ship, the underwater vehicle comprising a front portion referred to as the nose, the system comprising: a receiving device comprising a stop on which the nose of the underwater vehicle is capable of bearing, blocking means making it possible to secure the underwater vehicle to the stop, a flexible link intended to provide the interface between the receiving device and the ship, the flexible link being arranged so the ship pulls the assembly formed by the receiving device and the underwater vehicle on the front of the underwater vehicle when the latter is rigidly connected to the stop, stabilization means configured to make it possible to control the depth and the attitude, in particular the list and trim of the assembly formed by the receiving device and the underwater vehicle when the latter is rigidly connected to the stop.

A recovery system for recovering an autonomous underwater vehicle from a ship, the underwater vehicle comprising a front portion referred to as the nose, the system comprising: a receiving device comprising a stop on which the nose of the underwater vehicle is capable of bearing, blocking means making it possible to secure the underwater vehicle to the stop, a flexible link intended to provide the interface between the receiving device and the ship, the flexible link being arranged so the ship pulls the assembly formed by the receiving device and the underwater vehicle on the front of the underwater vehicle when the latter is rigidly connected to the stop, stabilization means configured to make it possible to control the depth and the attitude, in particular the list and trim of the assembly formed by the receiving device and the underwater vehicle when the latter is rigidly connected to the stop.

A replacement fin for an underwater vehicle includes a fin defining a socket that includes a bore of a first diameter and an internal spring recess of a larger diameter. A coil spring is retained in the spring recess and has coils of an elongated coil shape. The coil spring can occupy a first canted position in which the coils are canted in a direction generally into the bore and the coils can occupy a second canted position in which the coils are canted in a direction generally out of the bore. The UUV has a post that can include at least one circumferential recess configured to engage the coil spring, and which can function as a lock in some canted orientations of the spring. Alternately, the socket is defined in the UUV and the fin includes a post sized to be received in the socket.

A replacement fin for an underwater vehicle includes a fin defining a socket that includes a bore of a first diameter and an internal spring recess of a larger diameter. A coil spring is retained in the spring recess and has coils of an elongated coil shape. The coil spring can occupy a first canted position in which the coils are canted in a direction generally into the bore and the coils can occupy a second canted position in which the coils are canted in a direction generally out of the bore. The UUV has a post that can include at least one circumferential recess configured to engage the coil spring, and which can function as a lock in some canted orientations of the spring. Alternately, the socket is defined in the UUV and the fin includes a post sized to be received in the socket.

The present disclosure relates to sea floor mapping, and more particularly to a method, system, and apparatus for mapping a large swath of sea floor at substantial depths. An example autonomous underwater vehicle may include: a controller; a body having a front end and a rear end and defining a cavity and a center of gravity; a first dive plane extending from the body proximate the center of gravity; a second dive plane extending from the body substantially opposite of the first dive plane proximate the center of gravity; a counterweight disposed within the cavity configured to be moved between the front end and the rear end of the body, wherein a fore-aft pitch of the body of the autonomous underwater vehicle is controlled by the controller through movement of the counterweight toward the front end or the rear end of the body.

The invention provides for a hybrid unmanned aerial and submersible vehicle (UASV) (100) comprising a fuselage (102), at least one wing structure (104, 106), a propulsion system (116, 118) and an empennage. The said vehicle is capable of operating in air, on water and underwater via its wing tilting mechanism wherein the transition of the vehicle between different mediums is seamless. Further, the wing structures (104, 106) are connected on either side of the fuselage (102), such that each wing (104, 106) tilts about a common lateral axis (360? of freedom), and wherein said tilting depends on the mode of operation of the UASV (100). The vehicle of the present invention further includes a propeller protection system, a landing system, control surfaces, and sensors. The present invention also discloses methods for operating the UASV (100) in multiple mediums.

The invention provides for a hybrid unmanned aerial and submersible vehicle (UASV) (100) comprising a fuselage (102), at least one wing structure (104, 106), a propulsion system (116, 118) and an empennage. The said vehicle is capable of operating in air, on water and underwater via its wing tilting mechanism wherein the transition of the vehicle between different mediums is seamless. Further, the wing structures (104, 106) are connected on either side of the fuselage (102), such that each wing (104, 106) tilts about a common lateral axis (360? of freedom), and wherein said tilting depends on the mode of operation of the UASV (100). The vehicle of the present invention further includes a propeller protection system, a landing system, control surfaces, and sensors. The present invention also discloses methods for operating the UASV (100) in multiple mediums.

An underwater sonar device and an underwater detecting system. The underwater sonar device comprises a main body, a propeller, a detector and a hydrofoil assembly. The main body is an axisymmetric structure. The propeller, the detector, and the hydrofoil assembly are disposed on the main body. The detector is configured to detect and image an underwater target. The propeller is configured to drive the main body to move along a longitudinal direction and a vertical direction, and control a pitch angle, a roll angle, and a yaw angle of the main body. The hydrofoil assembly is disposed at a back of the main body, and is configured to adjust an included angle between the hydrofoil assembly and the longitudinal direction of the main body automatically based on water resistance on the hydrofoil assembly to keep the sonar device navigating at a fixed depth.

An underwater sonar device and an underwater detecting system. The underwater sonar device comprises a main body, a propeller, a detector and a hydrofoil assembly. The main body is an axisymmetric structure. The propeller, the detector, and the hydrofoil assembly are disposed on the main body. The detector is configured to detect and image an underwater target. The propeller is configured to drive the main body to move along a longitudinal direction and a vertical direction, and control a pitch angle, a roll angle, and a yaw angle of the main body. The hydrofoil assembly is disposed at a back of the main body, and is configured to adjust an included angle between the hydrofoil assembly and the longitudinal direction of the main body automatically based on water resistance on the hydrofoil assembly to keep the sonar device navigating at a fixed depth.

A power plant includes a structure and a vehicle having at least one wing including a first wing part and a second wing part. The vehicle is arranged to be secured to the structure by at least one tether. The vehicle is arranged to move in a predetermined trajectory by a fluid stream passing the wing. The vehicle includes at least one turbine connected to a nacelle having a generator. At least the first wing part is arranged at a first angle relative to a horizontal center line of the wing. The nacelle is arranged to be attached to a surface of the wing facing the direction in which the first wing part is angled.