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Hybrid underwater glider (HUG) combines behaviors of autonomous underwater gliders and those of traditional autonomous underwater vehicles. HUG can dive along a saw-tooth trajectory in the gliding mode and autonomously cruise in the level-flight mode. In the study of HUG dynamics, the mathematical model and the physical parameters of the vehicle are assumed to be deterministic. The simulation results...
Among the existing outstanding gliders, Hybrid Underwater Gliders (HUGs), which are often equipped with a propeller as the propulsion system, are the typical ones with better performance. However, studies on the HUG showed that the glider was very easy to yaw left or right, while the pure buoyancy-driven gliders didn't show such problem. The most possible reason may be from the propeller. In this...
A new kind of reliability calculation method for complex system was proposed in this paper. Taking the components as the nodes, the reliability of complex system was represented by the connectivity reliability of shortest path in the network model of complex system. According to the differences of connecting types, different reliability calculation models were constructed. Finally, taking the bogie...
Compared with autonomous underwater gliders (AUGs) with fixed wings, gliders with controllable wings have variable hydrodynamics coefficients to achieve better flight performance. In this paper, relations between flight performance and shapes of wings are analyzed. A combined mechanism which contains two sub-mechanisms is presented. It can achieve three kinds of shape changing motions including wings...
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