Results 21 to 30 of about 593 (134)
Stopping manoeuvre of high speed vessels fitted with screw and waterjet propulsion [PDF]
, 2009 Concern about the increase in high-speed vessel traffic necessitates steps to bring out safety guidelines in order to regulate and improve their manoeuvrability.
Krishnankutty, P., Varyani, K.
core +2 more sources
Zhongguo Jianchuan Yanjiu, 2023 ObjectivesThe unsteady force of the rotor is the main excitation source of pump-jet shafting vibration, and rotor-stator interaction has an important impact on the characteristics of the unsteady force.
Wanghao TANG +3 more
doaj +1 more source
Influence of Spatially Varying Flow on the Dynamic Response of a Waterjet inside an SES
International Journal of Rotating Machinery, Volume 2014, Issue 1, 2014., 2014 Surface Effect Ships (SES) are a promising fuel‐efficient ship technology that typically carry most of their weight on an air cushion. To accommodate its shallow draft and slender side hulls and to absorb the high thrust and power required for high‐speed applications, waterjets are typically used as the primary propulsion system.
Michael R. Motley +3 more
wiley +1 more source
Modeling of Cavitating Flow through Waterjet Propulsors
International Journal of Rotating Machinery, Volume 2012, Issue 1, 2012., 2012 A computational‐fluid‐dynamics‐based modeling effort to capture flow through an axial flow waterjet propulsor is presented. The effort covered the waterjet flow over a wide range of flow coefficients and into cavitation‐driven breakdown. The computations are presented in cavitation at two values of flow coefficient through a series of decreasing ...
Jules W. Lindau +7 more
wiley +1 more source
Zhongguo Jianchuan YanjiuObjectiveComposite materials offer advantages such as low weight, corrosion resistance and a high damping ratio. To enhance the overall performance of underwater vehicles, this study investigates the characteristics of a composite rotor pump-jet ...
Bo LU +5 more
doaj +1 more source
Performance evaluation of an underwater body and pumpjet by model testing in cavitation tunnel
International Journal of Naval Architecture and Ocean Engineering, 2010 Experimental investigations were carried out on an Axi-symmetric Body Model fitted with Pump-jet Propulsor (PJP) in the Cavitation Tunnel at Naval Science and Technological Laboratory (NSTL).
Ch. Suryanarayana +2 more
doaj +1 more source
STUDI EKSPERIMENTAL PERFORMANCE KAVITASI WATERJET PROPULSI [PDF]
, 2021 Cavitation is a complex phenomenon of dynamic processes in hydraulic machines that can cause a decrease in energy performance, vibration and damage the blade surfaces.
Louhenapessy, J. +3 more
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Actuation Strategies for Underwater Jet‐Propelled Soft Robots
Journal of Field Robotics, EarlyView.ABSTRACT This review article examines jet‐propulsion mechanisms in underwater soft robotic systems, focusing exclusively on physically fabricated and experimentally validated robots. Covering research published from 2013 to 2025, this study classifies and evaluates jet‐propulsion robots based on their actuation mechanisms.
Angel Kitone +3 more
wiley +1 more source
Developmental Dynamics, Volume 253, Issue 9, Page 859-874, September 2024.Abstract Background During the land‐to‐sea transition of cetaceans (whales, dolphins, and porpoises), the hindlimbs were lost and replaced by an elaborate tail fluke that evolved 32 Ma. All modern cetaceans utilize flukes for lift‐based propulsion, and nothing is known of this organ's molecular origins during embryonic development.
L. M. Gavazzi +5 more
wiley +1 more source
Effect of Hub-to-tip Ratio on Performance of High Speed Pump-jet Propulsor for Undersea Vehicle
水下无人系统学报To investigate the influence of the hub-to-tip ratio on the high-speed pump-jet propulsors of undersea vehicles, this study took an impeller with specific speed of 1 920 as the research object and conducted numerical calculation, performance result ...
Gongchang GAN
doaj +1 more source