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An unmanned vehicle is envisioned for multi-modal operation, first as an aircraft, then as an underwater glider. The benefits of a “Flying Sea Glider” are for high-speed flying ingress above the water and then maneuvering in an area of interest as a low-speed, long-endurance underwater glider. This development builds on previous NRL research in multi-modal designs and bio-inspired propulsion systems,...
In this paper, the design and control of a new underwater glider having a high horizontal speed was studied. For this, the capacity of buoyancy engine which performs 2.5(knots) horizontal speed was designed. Especially, a controllable buoyancy engine to regulate the amount of buoyancy was designed and developed for control of the pitching angle of UG and the mass shifter carrying the battery was designed...
According to the problem that pitching angle control of underwater glider is strongly influenced by wave and current, so we use the phase-lead compensator as a guide which can achieve the optimal control effect. This study aims to find one of the most suitable control methods for underwater glider to improve the effect of movement. Experiment shows that control system have obviously improved in terms...
Underwater glider, as a combination product of buoy technology and underwater vehicle, has broad application prospect in marine scientific research, environmental monitoring, resource exploration and military reconnaissance etc, because of the advantages of low-noise, long range, long duration and cost-efficiency. The conceptual design, body construction design based on modularization integrative...
The well-to-drag efficiency of PEMFC was investigated following a proton exchange membrane fuel cell (PEMFC) powered underwater glider Dragon. Due to the restriction of power source, the endurance of the legacy gliders is less than a year or has a small active area. To overcome those disadvantages of legacy gliders, the underwater vehicle Dragon was designed and the electrical efficiency of PEMFC...
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