Evaluation of planing craft maneuverability using mathematical modeling under the action of the rudder

Hajizadeh, Sajad; Seif, Mohammad Saeed; Mehdigholi, Hamid

doi:10.24200/sci.2017.4033

Cited by 3 publications

(4 citation statements)

References 4 publications

(7 reference statements)

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“…Ircani et al [17] simulated the manoeuvrability characteristics of a planing craft by a 4 DOF mathematical model, where the heave and pitch motions were disregarded, based on a captive model test available in the open literature [9,13,14]. Hajizadeh et al [18] simulated a planing craft manoeuvre by a 4 DOF mathematical model for a straight-line, course-changing and turning manoeuvres, using the MHCs in [19].…”

Section: Frmentioning

confidence: 99%

Simulation of Turning Manoeuvre of Planing Craft Taking Into Account the Running Attitude Change in a Simplified Manner

Sadati

Zeraatgar

Moghaddas

2022

Polish Maritime Research

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The modelling and simulation of planing craft manoeuvres requires coupled six degrees of freedom (6 DOF) motion equations. A coupled 6 DOF motion equation needs hundreds of manoeuvring hydrodynamic coefficients (MHCs) that are mostly determined using the planar motion mechanism (PMM) test. The number of test runs is too high, unless a kind of simplification is imposed to the motion equations. This study modifies 6 DOF motion equations to 4+2 DOF motion equations in which heave and pitch equations are replaced by dynamic draught and trim (so-called running attitude), respectively. The method is applicable for a manoeuvre that commences in the planing regime and ends in the same regime. On that basis, the PMM test is conducted and the model is restrained in the vertical plane at a certain running attitude, determined by a resistance test. The 4+2 DOF method, together with MHCs from the PMM test, are employed for the simulation of turning manoeuvres of a 25° prismatic planing hull. The results of the simulation indicate that the 4+2 DOF method reasonably predicts the path of the craft during the turning manoeuvre and cuts the number of PMM tests required at the same time. The PMM test results show that MHCs are highly related to forward speed and wetted surfaces. The turning manoeuvre simulation shows that the non-linear terms of MHCs cannot be ignored. The STD/L (Steady Turning Diameter divided by Length of the craft) for a planing craft is very large, compared to ships.

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Section: Frmentioning

confidence: 99%

Simulation of Turning Manoeuvre of Planing Craft Taking Into Account the Running Attitude Change in a Simplified Manner

Sadati

Zeraatgar

Moghaddas

2022

Polish Maritime Research

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“…The speed and trajectory of the craft are recorded by the Garmin model GPS, Etrex 10, and stored. The sensors are located at CG, where the 5 Planing Full-scale Field and simulation Turning Semi-planing Katayama et al 14 Planing Model-scale Field and simulation Turning Planing and semi-planing Katayama et al 10 Planing Model-scale Field and simulation Turning Semi-planing Yasukawa et al 11 Semi-planing Model-scale Simulation Turning Semi-planing Ircani et al 12 Planing Full-scale Field and simulation Turning and zig-zag Planing Jeon et al 16 Planing Full-scale Field and simulation Turning and zig-zag Planing Kim and Kim 17 Planing Model-scale Field Turning Semi-planing Hajizadeh et al 18 Planing measurements are conducted in the hydrodynamic coordinate system in the form of time trace.…”

Section: Specifications Of Two Craft and Measuring Facilitiesmentioning

confidence: 99%

“…The STD was reported to be six to seven times of the craft length in semi-planing mode. Hajizadeh et al 18 simulated a planing craft maneuver, straight-line, course-changing and turning, using Lewandowski 6 introduced maneuver hydrodynamic coefficients. Tavakoli and Dashtimanesh 19 presented simulation for steady turning in planing and semi-planing mode using 6DOF motion equations, in which hydrodynamic forces were computed by 2D + T theory.…”

Section: Introductionmentioning

confidence: 99%

Investigation of planing craft maneuverability using full-scale tests

Sadati

Zeraatgar

Moghaddas

2021

Proceedings of the Institution of Mechanical Engineers, Part M:

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Maneuverability of planing craft is a complicated hydrodynamic subject that needs more studies to comprehend its characteristics. Planing craft drivers follow a common practice for maneuver of the craft that is fundamentally different from ship’s standards. In situ full-scale tests are normally necessary to understand the maneuverability characteristics of planing craft. In this paper, a study has been conducted to illustrate maneuverability characteristics of planing craft by full-scale tests. Accelerating and turning maneuver tests are conducted on two cases at different forward speeds and rudder angles. In each test, dynamic trim, trajectory, speed, roll of the craft are recorded. The tests are performed in planing mode, semi-planing mode, and transition between planing mode to semi-planing mode to study the effects of the craft forward speed and consequently running attitude on the maneuverability. Analysis of the data reveals that the Steady Turning Diameter (STD) of the planing craft may be as large as 40 L, while it rarely goes beyond 5 L for ships. Results also show that a turning maneuver starting at planing mode might end in semi-planing mode. This transition can remarkably improve the performance characteristics of the planing craft’s maneuverability. Therefore, an alternative practice is proposed instead of the classic turning maneuver. In this practice, the craft traveling in the planing mode is transitioned to the semi-planing mode by forward speed reduction first, and then the turning maneuver is executed.

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“…Based on obtained information, a person forms a control signal and gives commands from the bridge control panel which are transmitted to the steering gear mechanism. By using steering gear mechanism, helmsman maintains existing course or changes the course (maneuvering) [1]. This type of control is based on the difference between the existing and the desired course, and the rudder mechanism is a part of the automatic control closed-loop [2].…”

Section: Introductionmentioning

confidence: 99%

Pso-Based Pid Controller Design for Ship Course-Keeping Autopilot

Dlabač

Ćalasan

Krčum

et al. 2019

brod

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This paper deals with autopilot proportional-integral-derivative (PID) controller design. In the literature, various available methods for PID controller have been presented. Based on the fact that the existing methods do not guarantee the optimal response of the system on the input step change, in this paper we used a valuable technique called Particle Swarm Optimization (PSO) in order to optimally design PID controller taking into account the system limitation such as the value of the rudder angle saturation. Furthermore, we have compared system response on input step and ramp change of input signal for a few PID controller parameters values obtained by using different methods known in literature. It has been proven that by applying the PSO method, it is possible to determine the optimal PID controller parameters which guarantee fast and proper response from the aspect of the minimal overshoot and the minimal settling time. The obtained results confirm the applicability and efficiency of using PSO method for optimal autopilot PID controller design.

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Evaluation of planing craft maneuverability using mathematical modeling under the action of the rudder

Cited by 3 publications

References 4 publications

Simulation of Turning Manoeuvre of Planing Craft Taking Into Account the Running Attitude Change in a Simplified Manner

Simulation of Turning Manoeuvre of Planing Craft Taking Into Account the Running Attitude Change in a Simplified Manner

Investigation of planing craft maneuverability using full-scale tests

Pso-Based Pid Controller Design for Ship Course-Keeping Autopilot

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