Results 251 to 260 of about 824 (280)

Cascade Fins: An Alternate Tail Stabilization Unit

AIAA Atmospheric Flight Mechanics Conference and Exhibit, 2008
Grid fin, an unconventional lifting and control surface, consisting of an outer box-like frame supporting an inner grid of intersecting small-chord planar surfaces, has been studied for some time. A new category of grid fins called Cascade fins is being introduced. Unlike grid fins, Cascade fins do not have cross members.
Ajoy Ghosh, Ajay Misra, Kunal Ghosh
openaire   +1 more source

A CONTROL SYSTEM FOR ACTIVE FIN ROLL STABILIZATION

Naval Engineers Journal, 1970
ABSTRACTA detailed investigation of the control problems involved in an active fin roll stabilization system has been undertaken which has resulted in an improved and greatly simplified system.Transfer functions were derived to describe the dynamic performance of a ship in roll, the active fin servo system and the control signal generation process ...
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Effect of Stabilizing Fins on the Indexes of Ship Manoeuvrability

Applied Mechanics and Materials, 2013
Too much ship model examinations have been carried out for understanding the ship’s manoeuvrability. A little data of full-scale ship examinations can be obtained because it is difficult and expensive for researchers. In this paper, the zig-zag test was done by a training ship equipped with a lot of measure apparatus and fin stabilizer, and then the ...
Lin Jia Yang, Zuo Chang Yang, Xiao Ri Gao, Yi Han Tao   +3 more
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On optimun turning configurations with fixed-fin stabilization

IEEE Journal of Oceanic Engineering, 1995
Linear turning theory is applied to find the fixed fin size and location that optimize turning performance, for a given degree of stability. It is shown that configuration having the same stability can be designed with a range of turning ability, and vice versa.
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Fin stabilizers as maneuver control surfaces

2012
Roll angle is often a limiting factor during high-speed turns and repetitive turning maneuvers. Navy and Coast Guard surface ships are designed for high-speed operation. Sharper turns at higher speeds, and repetitive high-speed turns can increase ship survivability by helping these vessels avoid incoming threats. This is particularly true if the amount
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Effect of Canard Deflection on Fin Performance of a Fin-Stabilized Projectile

33rd AIAA Applied Aerodynamics Conference, 2015
Sidra I. Silton, Craig J. Coyle
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Anti-rolling fin control for ship stabilization

2013 CACS International Automatic Control Conference (CACS), 2013
Active fin control is the most effective anti-rolling approach for ship stabilization system, however the accurate model of whole nonlinear dynamic ship system under random wave or wind impact is difficult to obtain. In this paper, a guarded heuristic genetic algorithm fin controller (GHGAFC) including a heuristic genetic algorithm fin controller ...
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Cascade control system of fin stabilizers

2014 19th International Conference on Methods and Models in Automation and Robotics (MMAR), 2014
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Launch dynamics of fin-stabilized projectiles

16th Atmospheric Flight Mechanics Conference, 1989
J. Bornstein, I. Celmins, P. Plostins, E. Schmidt   +3 more
openaire   +1 more source

Design of fin stabilizer controller during ship zig-zag motion

Ocean Engineering, 2022
Lihua Liang, Quancheng Cheng
exaly