Results 21 to 30 of about 47,836 (211)
Zhongguo Jianchuan Yanjiu, 2017 Flow-induced rudder system vibration has a great influence on the stealthiness of underwater vehicles. In order to study the vibration characteristics of rudder systems, a mathematical model of a binary linear flutter rudder system is built according to ...
XIAO Qing, HU Gangyi, XIE Junchao
doaj +1 more source
Application of dynamical systems theory to the high angle of attack dynamics of the F-14 [PDF]
, 1990 Dynamical systems theory has been used to study the nonlinear dynamics of the F-14. An eight degree of freedom model that does not include the control system present in operational F-14's has been analyzed.
Culick, Fred E. C., Jahnke, Craig C.
core +1 more source
Optimal Universal Controllers for Roll Stabilization [PDF]
, 2020 Roll stabilization is an important problem of ship motion control. This problem becomes especially difficult if the same set of actuators (e.g. a single rudder) has to be used for roll stabilization and heading control of the vessel, so that the roll ...
Cao, Ming +2 more
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High-efficiency airfoil rudders applied to submarines
Zhongguo Jianchuan Yanjiu, 2017 Modern submarine design puts forward higher and higher requirements for control surfaces, and this creates a requirement for designers to constantly innovate new types of rudder so as to improve the efficiency of control surfaces.
ZHOU Yimei +3 more
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Investigation of Asymmetric Twin-Rudder Load Behaviour Through Free-Running Model Tests
Polish Maritime Research, 2023 During tight manoeuvres, twin-screw ships equipped with two rudders located in the propeller slip stream experience a fairly large imbalance in the hydrodynamic loads on the propeller and rudders.
Efremov Dobrin, Milanov Evgeni
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Experimental studies on seakeeping and maneuverability of ships in adverse weather conditions [PDF]
, 2017 The introduction of the energy efficiency design index (EEDI), which is applicable for various types of new-built ships after January 1,2013, raised concerns regarding the sufficiency of propulsion power and steering devices to maintain maneuverability ...
Cura-Hochbaum, Andrés +6 more
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Advanced Intelligent Systems, EarlyView.Natural fliers achieve remarkable aerial performance through diverse wing neuromechanical systems integrating actuation, sensing, and control. This study synthesizes neuromechanical architectures in insects and hummingbirds, identifying two key functional types‐Dual Neural‐Mechanical Oscillator and Neurally‐modulated Mechanical Oscillator‐ and ...
Suyash Agrawal +4 more
wiley +1 more source
6th EASN conference, 2016 This paper presents the studies to develop structural highly orthotropic panels. These types of panels provide the capabilities required for structural morphing. They are highly deformable in one given direction and in the perpendicular one must be compliant to sustain the internal loads per certification stiffness and strength requirements.
Castillo Acero, Miguel Á. +2 more
openaire +1 more source
Wave effects on the turning ability of an ultra large container ship in shallow water [PDF]
, 2019 The influence of waves on ship behaviour can lead to hazardous scenarios which put at risk the ship, the crew and the surroundings. For this reason, investigating the effect of waves on manoeuvring is of relevant interest.
Delefortrie, Guillaume +6 more
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Helmeted hornbill cranial kinesis: Balancing mobility and stability in a high‐impact joint
The Anatomical Record, EarlyView.Abstract Prokinesis—in which a craniofacial joint allows the rostrum to move relative to the braincase—is thought to confer diverse advantages in birds, mostly for feeding. A craniofacial joint would, however, be a weak link if cranial stability is important. Paradoxically, we have identified a craniofacial joint in helmeted hornbills (Rhinoplax vigil),
Mike Schindler +8 more
wiley +1 more source