Rudder
View article: A NOVEL LINEAR ELECTROMAGNETIC ACTUATOR WITH COMBINED LINEAR AND RECIPROCATING MOTION FOR MECHATRONIC SYSTEMS
A NOVEL LINEAR ELECTROMAGNETIC ACTUATOR WITH COMBINED LINEAR AND RECIPROCATING MOTION FOR MECHATRONIC SYSTEMS Open
This work presents a novel linear electromagnetic actuator designed to provide both linear and reciprocating motion within a single compact system. The proposed design addresses the limitations of classical electromagnetic linear drives, w…
View article: Balanced Objective Model Predictive Control for Distance-Keeping and Tracking of Manoeuvring Vessels
Balanced Objective Model Predictive Control for Distance-Keeping and Tracking of Manoeuvring Vessels Open
Maintaining a specified distance from target vessels is a common requirement in maritime management. The tracking control is inherently complex, demanding both accurate target tracking and frequent adjustments to the propeller and rudder, …
View article: Adaptive Residual-Update Steering for Low-Overhead Hallucination Mitigation in Large Vision Language Models
Adaptive Residual-Update Steering for Low-Overhead Hallucination Mitigation in Large Vision Language Models Open
Large Vision-Language Models (LVLMs) often suffer from object hallucination, generating text inconsistent with visual inputs, which can critically undermine their reliability. Existing inference-time interventions to mitigate this issue pr…
View article: Adaptive Residual-Update Steering for Low-Overhead Hallucination Mitigation in Large Vision Language Models
Adaptive Residual-Update Steering for Low-Overhead Hallucination Mitigation in Large Vision Language Models Open
Large Vision-Language Models (LVLMs) often suffer from object hallucination, generating text inconsistent with visual inputs, which can critically undermine their reliability. Existing inference-time interventions to mitigate this issue pr…
View article: Numerical Investigation of Coupled Oblique Flow and Steering Effects on Hydrodynamic Performance of Rudder Behind Propeller
Numerical Investigation of Coupled Oblique Flow and Steering Effects on Hydrodynamic Performance of Rudder Behind Propeller Open
The hydrodynamic performance of a rudder behind a propeller is critical for determining vessel maneuvering stability. During navigation, the coupled effects of the oblique flow angle (β) and the rudder angle (δ) significantly alter the wak…
View article: RESEARCH AND ANALYSIS OF CONTROL SYSTEMS OF ANTI-AIRCRAFT MISSILE COMPLEXES
RESEARCH AND ANALYSIS OF CONTROL SYSTEMS OF ANTI-AIRCRAFT MISSILE COMPLEXES Open
The article discusses the optimization of the process transition missile from its own trajectory to the kinematic trajectory during the flight anti-aircraft guided missiles. In addition, the requirements for the control contour of the guid…
View article: Topology Optimization for Rudder Structures Considering Additive Manufacturing and Flutter Effects
Topology Optimization for Rudder Structures Considering Additive Manufacturing and Flutter Effects Open
This paper presents a multi-constraint topology optimization strategy for rudder structures, integrating additive manufacturing (AM)-related overhang angle and flutter-performance considerations. To the best of our knowledge, this is the f…
View article: Retrofitted Gate Rudder System In Situ Performance Analysis Using Data-Driven Method
Retrofitted Gate Rudder System In Situ Performance Analysis Using Data-Driven Method Open
The growing focus on enhancing ship performance over the past decades has driven the invention of various energy-saving devices. Conducting performance analyses of these devices is essential to substantiate the claimed energy savings. Howe…
View article: Nonlinear Aerodynamic Responses of Flight Control Surfaces to Thrust Reverser Jet-Induced Flow Interference
Nonlinear Aerodynamic Responses of Flight Control Surfaces to Thrust Reverser Jet-Induced Flow Interference Open
Numerical simulations were performed using the RANS (Reynolds-averaged Navier–Stokes) approach to analyze the flow field around an aircraft during the landing rollout phase with thrust reversers deployed. The objective was to characterize …
View article: Multi-Sensor System for Analysis of Maneuver Performance in Olympic Sailing
Multi-Sensor System for Analysis of Maneuver Performance in Olympic Sailing Open
This paper presents a novel multi-sensor system for enhanced maneuver analysis in Olympic dinghy sailing. In the ILCA class, there is an increasing demand for precise in-field measurement and analysis of physical properties beyond well-est…
View article: Influence of hull–propeller–rudder interaction on the self-propulsion of wind-assisted ships
Influence of hull–propeller–rudder interaction on the self-propulsion of wind-assisted ships Open
Wind-assisted propulsion systems represent one of the most promising technologies for decreasing greenhouse gas emissions in shipping, offering significant potential to reduce fuel consumption. There is a complex interaction between the fo…
View article: Modeling and analysis of folding rudder stiffness using spring elements to equivalently represent nonlinear elements
Modeling and analysis of folding rudder stiffness using spring elements to equivalently represent nonlinear elements Open
The mechanism and principles of the impact of nonlinear elements on the dynamic characteristics of the folding rudder structure under different states are investigated in this paper. A spring element dynamic modeling method is proposed, wh…
View article: Rudder force calculation in the early design stage considering propeller–rudder interaction
Rudder force calculation in the early design stage considering propeller–rudder interaction Open
View article: Optimization design about end plates of ship rudder based on hydrodynamic numerical simulations
Optimization design about end plates of ship rudder based on hydrodynamic numerical simulations Open
To further improve the hydrodynamic performance of ship rudder systems, the addition of end plates at the upper and lower ends of the rudder blade can effectively suppress transverse flow. This study investigates the influence of such end …
View article: Numerical Investigations and Optimized Design of the Active Cooling Performance with Phase Change for Aircraft Rudder Shaft
Numerical Investigations and Optimized Design of the Active Cooling Performance with Phase Change for Aircraft Rudder Shaft Open
During hypersonic flight, the air rudder shaft can undergo huge aerodynamic heating load, where it is necessary to design the thermal protection system of the air rudder shaft. Aiming to prevent the rudder shaft from thermal failure due to…
View article: Experimental Study on the Influence Characteristics of Yaw Angle and Rudder Angle on Propeller Cavitation Inception and Pressure fluctuations
Experimental Study on the Influence Characteristics of Yaw Angle and Rudder Angle on Propeller Cavitation Inception and Pressure fluctuations Open
In this paper, we employed a multi-field synchronous measurement system to conduct a systematic experimental study on a submarine-propeller integrated model in the China Large Cavitation Channel, comprehensively investigated the influence …
View article: InvSim algorithm for pre-computing airplane flight controls in limited-range autonomous missions, and demonstration via double-roll maneuver of Mirage III fighters
InvSim algorithm for pre-computing airplane flight controls in limited-range autonomous missions, and demonstration via double-roll maneuver of Mirage III fighters Open
View article: Rudder Form in Inland and Oceangoing Dutch Merchantmen of the 17th Century
Rudder Form in Inland and Oceangoing Dutch Merchantmen of the 17th Century Open
The Dutch flourished in international and internal maritime trade during the 17th century. The typical oceangoing ship was the fluyt, and the typical inland ship was the wijdschip. The rudders of historical and archaeological examples of t…
View article: Investigation of the Asymmetric Features of X-Rudder Underwater Vehicle Vertical Maneuvring and Novel Motion Prediction Technology
Investigation of the Asymmetric Features of X-Rudder Underwater Vehicle Vertical Maneuvring and Novel Motion Prediction Technology Open
An X-rudder underwater vehicle’s hydrodynamic force acting on its rudder will display asymmetrical characteristics during vertical movement that are absent from a cross-rudder vehicle. This paper presents a novel hydrodynamic expression me…
View article: Impact of leeway and rudder angles on ship resistance: A numerical planar motion mechanism approach
Impact of leeway and rudder angles on ship resistance: A numerical planar motion mechanism approach Open
Driven by environmental policies, the maritime sector is increasingly utilising sustainable energy sources, with wind energy emerging as a primary strategy for achieving zero-carbon emissions. These wind-propulsion devices augment the ship…
View article: Algorithm for Numerically Solving Airplane Inverse Simulation Problems in Flight Dynamics
Algorithm for Numerically Solving Airplane Inverse Simulation Problems in Flight Dynamics Open
The nonlinear differential-algebraic equations (DAE) governing the six-degree-of-freedom motion of a fixed-wing aircraft consists of several coupled elements describing the linear (translational) motion, angular motion, and intermediate fl…
View article: Mathematical modelling of the ship transfer from a turn of a given radius to a straight line
Mathematical modelling of the ship transfer from a turn of a given radius to a straight line Open
This paper describes a mathematical model of unsteady curvilinear motion of a vessel on a river bend. The main components of the model are dimensionless angular and linear velocities, drift angle at the vessel's centre of mass, heading, ad…
View article: VTOL Air Vehicle With Fixed‐Inclined Rotors and a Rudder Vane
VTOL Air Vehicle With Fixed‐Inclined Rotors and a Rudder Vane Open
This paper describes a vertical take off and landing (VTOL) aircraft equipped with a rotor obliquely fixed to the wing and a control surface that changes the direction of the slipstream of the propeller. Conventional VTOL aircraft, such as…
View article: Resistance and propulsion performance of a twin skeg ship with different rudder angle
Resistance and propulsion performance of a twin skeg ship with different rudder angle Open
View article: The effect of rudder deflections on hydrodynamic performance of underwater vehicles during dynamic maneuver
The effect of rudder deflections on hydrodynamic performance of underwater vehicles during dynamic maneuver Open
A computational study is conducted for the flow over the submarine under the rudder deflection condition, considering the complicated flow characteristics of a submersible under maneuvering conditions. The STAR-CCM + is used to simulate th…
View article: Research on Design and Energy-Saving Performance of Gate Rudder
Research on Design and Energy-Saving Performance of Gate Rudder Open
As a novel energy-saving and maneuvering device for ships, the gate rudder system (GRS) functions similarly to an accelerating duct. While providing additional thrust, its independently controllable rudder blades on either side of the prop…
View article: Numerical Study of the Energy-Saving Effect of the Gate Rudder System
Numerical Study of the Energy-Saving Effect of the Gate Rudder System Open
Energy-saving device (ESD) plays an important role in mitigating the emission of greenhouse gases in ship industry. It is necessary to study a promising ESD, a gate rudder, for its great potential in promoting energy efficiency. In the pre…
View article: Neural Network‐Based Adaptive Dynamic Surface Course Tracking Control of an Unmanned Surface Vehicle With Signal Input Quantization
Neural Network‐Based Adaptive Dynamic Surface Course Tracking Control of an Unmanned Surface Vehicle With Signal Input Quantization Open
This paper investigates the adaptive neural network‐ controlled course tracking of an unmanned surface vehicle (USV) with quantization of signal input. As a first step, the characteristics of the ship's rudder servo system are fully consid…
View article: Study on Rudder Compartment Assembly Process Planning Based on Ant Colony Algorithm
Study on Rudder Compartment Assembly Process Planning Based on Ant Colony Algorithm Open
When conducting the overall assembly design of the rudder compartment, a detailed optimization analysis of its assembly process is required. In this paper, the assembly process problem of the rocket rudder compartment is regarded as a comb…
View article: Research on multi-objective topology optimization design of rudder structure stiffness and flutter
Research on multi-objective topology optimization design of rudder structure stiffness and flutter Open
With the continuous increase in flight speeds and operational performance requirements, the lightweight design of missile rudder structures has become imperative; however, the resulting aeroelastic issues cannot be overlooked. Aiming at th…