An Experimental Study on Effect of Angle of Attack on Elevator Control Force for Underwater Vehicle with Separate Fixed Fins

박, 정훈; 신, 명섭; 최, 재엽; 황, 종현; 신, 영훈; 김, 연규

doi:10.5574/ksoe.2016.30.4.243

Cited by 5 publications

(2 citation statements)

References 10 publications

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“…To predict the maneuverability accurately, research about dynamic model using coupled hydrodynamic effects has been conducted actively. Park et al (2016) verified the interactions between the angle of attack and elevator angle of underwater vehicles that have fixed fins and movable fins. Dantas and de Barros (2013) numerically analyzed the coupled effects of the control surface deflection and angle of attack in an AUV that has only movable fins.…”

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confidence: 82%

Simulation-Based Prediction of Steady Turning Ability of a Symmetrical Underwater Vehicle Considering Interactions Between Yaw Rate and Drift/Rudder Angle

Park

Shin

Jeon

et al. 2021

J. Ocean Eng. Technol.

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Mass of Underwater Vehicle (kg) Moment of Inertia (kg-m 2 ) X Position in Earth-Fixed Frame (m) Y Position in Earth-Fixed Frame (m) Yaw Angle in Earth-Fixed Frame (rad) Surge Velocity in Body-Fixed Frame (m/s) Sway Velocity in Body-Fixed Frame (m/s) Overall Speed (m/s) Yaw Rate in Body-Fixed Frame (rad/s) Drift Angle (rad) Rudder Deflection Angle (rad) Surge Force in Body-Fixed Frame (N) Sway Force in Body-Fixed Frame (N) Yaw Moment in Body-Fixed Frame (N-m) Length of Underwater Vehicle Body (m) X coordinate of Center of Gravity (m) Y coordinate of Center of Gravity (m) 1. Introduction Many kinds of underwater vehicles have been developed for military, commercial, and scientific purposes, such as submarines, torpedoes, autonomous underwater vehicles (AUVs), remotely operated vehicles (ROVs), underwater gliders, etc. Underwater vehicles need to have various types of performance depending on their operating concept and tasks. For example, maneuverability, course-keeping ability, turning ability, and course-changing ability are the most fundamental elements, so their prediction is very important work in the design process of underwater vehicles. The process of predicting maneuverability consists of constructing equations of motion, obtaining hydrodynamic derivatives, and performing flight simulation. Most equations of motion of an underwater vehicle are based on the submarine dynamic model by Gertler and Hagen (1967). Feldman (1979) proposed a modified dynamic model to describe extreme turning and a high angle of attack accurately based on the model of Gertler and Hagen. Healey and Lienard (1993) proposed a dynamic model for a large AUV for low-speed flight. Many another researchers have also carried out research on equations of motion (Bae et al., 2009;Park et al., 2015).

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confidence: 82%

Simulation-Based Prediction of Steady Turning Ability of a Symmetrical Underwater Vehicle Considering Interactions Between Yaw Rate and Drift/Rudder Angle

Park

Shin

Jeon

et al. 2021

J. Ocean Eng. Technol.

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“…The National Advisory Committee for Aeronautics (NACA) provides values of C D and C L according to the shape of the airfoil. Because the angle of attack is the same as the angle of the actuator [36], f ax , f ay , and f az are expressed as functions of the actuator angles. Letting δ r and δ l be the angles of the left and right elevators, and δ R be the rudder angle, from Equations ( 1) and ( 11), the mathematical model of the towfish can be expressed as…”

Section: Simulation Conditionsmentioning

confidence: 99%

Towfish Attitude Control: A Consideration of Towing Point, Center of Gravity, and Towing Speed

Kim

Park²,

Oh³

et al. 2021

JMSE

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This paper deals with the attitude control of a towfish (underwater towed vehicle) with two elevators and a single rudder to improve the image quality of an attached sound navigation ranging (sonar) system. Image distortion can occur if the towfish shakes excessively. Since a towfish is connected to the mother ship through a towing cable and the motion of the towfish is affected not only by the motion of the cable, but also by the position of the center of gravity, towing point, and towing speed, it is necessary to analyze how these factors affect the towfish to appropriately control its attitude. In this study, a method for obtaining a feasible region of the towing point in accordance with the variations in the center of gravity and towing speed is proposed, and the feasible region obtained can ensure that pitch control can be achieved using the installed elevators. In addition, the allowable range of disturbances for yaw control was also investigated. Simulations were conducted using the dynamic models of the towfish and cable to check the obtained feasible region/range, and it was confirmed that there is a region/range where the attitude control can be carried out with relative ease.

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Experimental investigation on a generic submarine hydrodynamic model considering the interaction effects of hull motion states and control planes

Kim,

Baek

et al. 2024

Ocean Engineering

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An Experimental Study on Effect of Angle of Attack on Elevator Control Force for Underwater Vehicle with Separate Fixed Fins

Cited by 5 publications

References 10 publications

Simulation-Based Prediction of Steady Turning Ability of a Symmetrical Underwater Vehicle Considering Interactions Between Yaw Rate and Drift/Rudder Angle

Simulation-Based Prediction of Steady Turning Ability of a Symmetrical Underwater Vehicle Considering Interactions Between Yaw Rate and Drift/Rudder Angle

Towfish Attitude Control: A Consideration of Towing Point, Center of Gravity, and Towing Speed

Experimental investigation on a generic submarine hydrodynamic model considering the interaction effects of hull motion states and control planes

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