Results 31 to 40 of about 271 (131)
Design of RBF Adaptive Sliding Mode Controller for A Supercavitating Vehicle
IEEE Access, 2021 This paper proposes an adaptive sliding mode control strategy based on RBF (Radial Basis Function) neural network for the supercavitating vehicle system with model uncertainties and external disturbance.
Wang Jinghua +4 more
doaj +1 more source
Complexity, Volume 2020, Issue 1, 2020., 2020 This paper is concerned with the robust stabilization of a class of continuous‐time nonlinear systems, with an application to the pitch dynamics of a simple helicopter model, via an affine state‐feedback control law using the linear matrix inequality (LMI) approach.
Hassène Gritli +1 more
wiley +1 more source
Performance Comparison of Bow and Stern Rudder for High‐Speed Supercavitating Vehicles
Mathematical Problems in Engineering, Volume 2020, Issue 1, 2020., 2020 To predict the hydrodynamic characteristics and supercavity shape of supercavitation flows, the numerical model including VOF, cavitation model, and turbulence models is presented and validated by a well‐established empirical correlation. The numerical method is then employed to simulate the high‐speed supercavitating vehicles with two different types ...
Chuang Huang +5 more
wiley +1 more source
Influence of Fin Deflection Angle on Nonlinear Dynamic of Supercavitating Vehicle
IEEE Access, 2021 Supercavitation technology can greatly improve the speed of underwater vehicle. The fin is an important controller of the vehicle, and the motion characteristics of the vehicle are greatly influenced by the fin deflection angle.
Yipin Lv +3 more
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Engineering Applications of Computational Fluid Mechanics, 2023 Supercavitation has been recently presented as an effective method for the drag reduction of underwater vehicles. However, maintaining the supercavitating state requires a lot of energy, making vehicles difficult to control. Therefore, it is necessary to
Guangyao Chen +4 more
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Investigation of the Effect of Cavitator Angle and Dimensions for a Supercavitating Vehicle
Journal of Aerospace Sciences and Technologies, 2023 At very high speeds, bubbles form on the body of underwater vehicles because of sharp trailing edges or at places where the local pressure is lower than the vapor pressure. These bubbles are called cavities and the size of the cavities grows as the velocity increases.
Sri Raman, A., A.K.Ghosh
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Modeling of the Tail Slap for an Underwater Projectile within Supercavitation
Mathematical Problems in Engineering, Volume 2019, Issue 1, 2019., 2019 Detailed process of the tail slap for an underwater projectile in supercavitation is studied in this paper. Firstly, the horizontal equation of motion for the projectile and a dynamic model of the projectile’s tail slap are introduced through a mathematical derivation, including a simple harmonic motion model of the projectile within the ...
Xuefeng Zhao +3 more
wiley +1 more source
Geofluids, Volume 2018, Issue 1, 2018., 2018 The water entry problem of three‐dimensional pounders with different geometric shapes of cube, cylinder, sphere, pyramid, and cone was numerically simulated by the commercial software Abaqus, and the effects of pounder shape and drop height from the free surface of water on deepwater displacement and velocity as well as pinch‐off time and depth were ...
Mohammad Hossein Taghizadeh Valdi +4 more
wiley +1 more source
Spatial Kinetics Model of Supercavitating Vehicles Reflecting Conic‐Like Oscillation
Mathematical Problems in Engineering, Volume 2017, Issue 1, 2017., 2017 A spatial kinetics model for supercavitating vehicles including the coupled motion of pitch, yaw, and rolling was presented. Mathematical simulations were performed to investigate dynamic performance of supercavitating vehicles. An intrinsic conic‐like oscillation in the motion of supercavitating vehicles was discovered.
Chuang Huang +5 more
wiley +1 more source
Stability Analysis of a Fractional-Order High-Speed Supercavitating Vehicle Model with Delay
Machines, 2021 A novel fractional-order model (FOM) of a high-speed super-cavitating vehicle (HSSV) with the nature of memory is proposed and investigated in this paper.
Phuc Thinh Doan +4 more
doaj +1 more source