Results 101 to 110 of about 271 (131)
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Accelerated motion control of a supercavitating vehicle
2010 3rd International Symposium on Systems and Control in Aeronautics and Astronautics, 2010A new concept of control accelerated motion of supercavitating vehicle is present. Before reaching a constant cruising speed of 100 m/s supercavitating vehicle is process of accelerated motion. In order to explore dynamic model and control challenges associated with the longitudinal accelerated motion of supercavitating vehicles, memory effect of the ...
null Jinghua Wang +4 more
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Effect of Cavitator on Supercavitating Vehicle Dynamics
IEEE Journal of Oceanic Engineering, 2012In this paper, a linear mathematical model of a supercavitating vehicle is developed to investigate some of the physical factors affecting stability and control. This model provides a link between the simulation dynamics and the assumed physical vehicle characteristics.
H. Mokhtarzadeh, G. Balas, R. Arndt
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On self-noise at the nose of a supercavitating vehicle
Journal of Sound and Vibration, 2009Abstract The cavity of a supercavitating vehicle in water is maintained by the steady injection of gas from sources within the vehicle and cavity. An analysis is made in this paper to estimate the spectrum of the acoustic ‘self-noise’ produced at the nose of the vehicle by the unsteady impingement of the gas on the cavity interface.
M.S. Howe, A.M. Colgan, T.A. Brungart
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Nonlinear Dynamics and Bifurcations of a Supercavitating Vehicle
IEEE Journal of Oceanic Engineering, 2007In this effort, a numerical study of the bifurcation behavior of a supercavitating vehicle is conducted. The vehicle model is nonsmooth; this is a result of the planing force acting on the vehicle. With a focus on dive-plane dynamics, bifurcations with respect to a quasi-static variation of the cavitation number are studied.
Guojian Lin +2 more
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Transactions of the Institute of Measurement and Control, 2018 To enlarge the domain of attraction of a supercavitating vehicle subject to actuator saturation, this paper presents a new output feedback control design in consideration of the immeasurable vertical speed.
Baochen Qiang, Le Zhang
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Analysis, Control, and Maneuvering of Supercavitating Vehicles
Volume 8: Dynamic Systems and Control, Parts A and B, 2010A dive-plane model of a supercavitating vehicle is considered and the physical basis for a time delay effect in this system is described. The time delay is on the order of the vehicle length divided by its speed. Control design is carried out to achieve stabilization of the supercavitating vehicle for trim conditions inside or outside the cavity in the
Munther A. Hassouneh +3 more
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Nonlinear Robust Control Design for a Supercavitating Vehicle
Dynamic Systems and Control, Parts A and B, 2006Supercavitating vehicles can achieve very high speed but also pose technical challenges in maneuvering, system stability and control. Compared to a fully-wetted vehicle for which substantial lift is generated due to vortex shedding off the hull, the supercavitating vehicles are enveloped by gas surface thus the lift is provided by control surface ...
X. Mao, Q. Wang
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Dynamic features of kinetic energy supercavitating vehicles
Applied Ocean Research, 2020Abstract Stability is an important issue for the application of kinetic energy supercavitating vehicles. Interactions of supercavitating vehicles with their fluid environment are exceptionally complex. Traditionally, the kinetic modeling is established in the longitudinal plane, which is inevitable to lose some important features of 6DOF dynamic ...
Kangjian Wang +3 more
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Numerical and Experimental Study of a Ventilated Supercavitating Vehicle
Journal of Fluids Engineering, 2014In this paper, the ventilated supercavities are studied both numerically and experimentally. A slender rod is considered as the solid body which has a sharp edged disk at the nose as a cavitator and special ports for air ventilation. The experiments are conducted in a recirculating water tunnel. The simulations are provided for two different algorithms
I. Rashidi +3 more
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Double-loop decoupling control for a supercavitating vehicle
2017 32nd Youth Academic Annual Conference of Chinese Association of Automation (YAC), 2017Underwater vehicles that travel inside a large continuous gas bubble offer an opportunity for high speed transportation. This type vehicle is referred to as high speed supercavitating vehicle (HSSV). The main challenge of the HSSV control is that dynamics model of HSSV system have strong-coupling and weak damped characteristics. In general, the dynamic
Aiping Pang, He Zhen, Jinghua Wang
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