摘要:
The method for lowering an object to an underwater installation site, wherein a submersible remotely operated vehicle (ROV) having at least one thruster for providing lateral thrust is interconnectable to an object, entails providing a vessel, having a winch and suspension cable; interconnecting and lowering the object and ROV towards the underwater installation site using a suspension cable, providing at least one anchor near the installation site; interconnecting each anchor and ROV with a positioning wire, while the ROV and object are suspended in the holding position; tensioning and adjusting the length of each positioning wire such that the interconnected ROV and object are positioned with respect to the installation site; and further lowering interconnected object and ROV, which are positioned by at least one positioning wire onto the installation site while keeping the interconnected object and ROV suspended from a suspension cable.
摘要:
An autonomous surface watercraft is disclosed. The watercraft may include a control module, a communications module, a power management module, a differential thrust propulsion system, and a navigation module. One or more sensors may be provided internal to the watercraft and/or coupled to a sensor module coupling point on the watercraft. An operator may provide the watercraft with mission parameters such as but not limited to station point(s), a sensing location or area, a sensing duration, and/or a sensing time. The watercraft may determine a course heading to reach a station point or sensing area. The control module may control the propulsion system to reach the station point and for station keeping. The watercraft may gather sensor data. The sensor data may be analyzed, filtered, stored in memory and/or transmitted to a control center. The control center may receive real-time data from a plurality of such watercraft.
摘要:
The present invention provides a self-contained propulsion apparatus 1 suitable for a sub-sea ROV. The apparatus comprises: a reactor vessel 2 having at least one inlet 3, 4 and an exhaust 7; reservoirs 10, 11 for holding fuel and an oxidant material therefor, wherein the reaction products of said fuel and oxidant comprise steam; a remotely operable fuel and oxidant supply control device 12, 13; and a steam turbine 9 connected to the exhaust 7 so as to be driven by steam from the reactor vessel 2. The turbine 9 is drivingly connected 39 to a propulsion device 42 for propelling the ROV in use thereof. A degassing apparatus 17 is provided for substantially removing steam and any other gas phase reaction products, from the gas phase into the liquid and/or solid phase, downstream of the turbine 9.
摘要:
A pumpskid comprises a frame adapted for connection to a remotely operated vehicle for positioning thereby. A male connector mounted on the frame is adapted for engagement with the suction port on a suction anchor. Clamping apparatus is provided for securing the male connector in engagement with the suction port of the suction anchor and thereby clamping the pumpskid in engagement with the suction anchor. A pump mounted on the frame is connected in fluid communication with the male connector by piping sections which include a port open to the surrounding sea. Valves and valve actuators are provided for causing the pump to cause water flow out of or into the suction anchor, as required.
摘要:
The invention relates to a self-propelled shark-proof cage which is provided with at least one access opening and a propeller mounting frame having pivot means coupling it to the cage so that the propeller mounting frame is pivotal about two axes at right angles to each other, and the propeller mounting frame carries on it an air motor and a propeller. The frame is provided with buoyancy means so that it can be made to be of approximately the same gravity as sea-water, and the air motor is driven by compressed air so that the cage can be propelled through the water, thereby enabling abalone divers to collect abalone without fear of predators and, beacause of less exertion, for longer periods of time.
摘要:
An aircraft having a body on which is mounted an integrated lift, propulsion and steeing system inclusive of cycloidal propellers having horizontal axes of rotation capable of developing net thrust forces at any given angle in a vertical plane. Each propeller is externally driven and is formed with a circular array of blades at the periphery of a common rim and the blades can be turned to vary the angle of thrust by operation of a common control head.
摘要:
A remotely controlled submersible vehicle having a rigid truss framework suspended from a flotation sphere, three horizontally disposed members of the truss framework being arranged to form a triangular assembly about a vertically oriented center post affixed to the sphere. Thrusters affixed to the corners of the triangular assembly provide for translational and rotational control of the vehicle.
摘要:
Systems and methods for securing a remotely operated vehicle (ROV) to a subsea structure during cleaning, maintenance, or inspection of the structure surface are provided. In one or more embodiments, an attachment mechanism includes a pair of grasping hooks that are raised and lowered when driven by a motorized drive. In one or more embodiments, an attachment mechanism includes a rigid holder having a mechanical stop and connected to a swing arm, the swing arm configured to rotate inward, but not outward beyond the mechanical stop. In one or more embodiments, an attachment mechanism includes a plurality of linked segments in series, each connected at a plurality of pivot points. A pair of wires passes through the plurality of linked segments and connects to a pair of pulleys that extend or retract the wires, thereby rotating the plurality of linked segments.
摘要:
A system for underwater inspection including an inspection crawler are provided. The inspection crawler includes a housing having first and second sides, a power source, a controller, an inspection tool, at least two driving wheels, and a moveable center of gravity. A method for traversing a weld joint with the inspection crawler having a moving mass is also provided. In the method, the crawler is parked proximate to the joint, and the mass is slid along a slide rail to the second end of the crawler distal to the joint. The first end of the crawler is then propelled over the joint and the mass is slid to the center of the crawler. A center portion of the crawler is then propelled over the joint and the mass is slid to the first end of the crawler. The second end of the crawler is then propelled over the joint.
摘要:
It is an object of the present invention to provide a means of constructing an Autonomous fully-Submersible Offshore Marine Platform (ASOMP) of considerable warfighting or commercial capability which is mobile and can autonomously transport to a hazardous operating area in a low-observable reduced vulnerability manner, fully submerge to avoid the military or environmental threat hazard, hibernate until needed, perform fully submerged mobility and mission operations, surface and provide Barge and SWATH surface ship mobility and mission operations, resubmerge if the hazardous threat appears and relocate to a new operating area. Another object of the present invention is to provide a fully autonomous and submersible low-cost “lily-pad” that surfaces when called and provides a main deck platform at appropriate freeboard and seakeeping motions to function as a refueling landing zone and pier to extend the range of aircraft and marine vehicles operating in a high-threat environment.