Results 11 to 20 of about 11,062 (249)

Stability versus maneuverability in hovering flight [PDF]

open access: yesPhysics of Fluids, 2015
Insects and birds are often faced by opposing requirements for agile and stable flight. Here, we explore the interplay between aerodynamic effort, maneuverability, and stability in a model system that consists of a Λ-shaped flyer hovering in a vertically oscillating airflow.
Yangyang Huang   +2 more
openaire   +2 more sources

Design of space turning motion control system of X-rudder submarine

open access: yesZhongguo Jianchuan Yanjiu, 2020
[Objectives] In order to solve the problem of space turning motion control for the X-rudder submarine,a fuzzy control system for turning of the X-rudder submarine is designed by using the fuzzy control method.[Methods] A weight fuzzy system for the X ...
XIA Ji, HUANG Bin
doaj   +1 more source

The Effect of Hull Form Parameters on the Hydrodynamic Performance of a Bulk Carrier

open access: yesJournal of Marine Science and Engineering, 2021
In this study, the effect of joint optimization of the principal dimensions and hull form on the hydrodynamic performance of a bulk carrier was studied.
Rui Deng   +4 more
doaj   +1 more source

Maneuvering Performance in the Colonial Siphonophore, Nanomia bijuga

open access: yesBiomimetics, 2019
The colonial cnidarian, Nanomia bijuga, is highly proficient at moving in three-dimensional space through forward swimming, reverse swimming and turning.
Kelly R. Sutherland   +3 more
doaj   +1 more source

Innovation Concept Model and Prototype Validation of Robotic Fish with a Spatial Oscillating Rigid Caudal Fin

open access: yesJournal of Marine Science and Engineering, 2021
Inspired by carangiform fish with a high-aspect ratio of the caudal fin’s up-down swing, but also by dolphins with a similar caudal fin’s left-right swing, a robotic fish with a spatial oscillating rigid caudal fin is implemented to optimize propulsion ...
Shuyan Wang, Yu Han, Shiteng Mao
doaj   +1 more source

A study on using electric power steering to reduce the effort required for handling

open access: yesNihon Kikai Gakkai ronbunshu, 2016
This paper proposes a design method that uses electric power steering (EPS) to reduce the effort required for handling in a vehicle. To accomplish this, the design must reduce the physical effort required of the driver, improve the controllability of ...
Shuji ENDO
doaj   +1 more source

Noisy pursuit and pattern formation of self-steering active particles

open access: yesNew Journal of Physics, 2022
We consider a moving target and an active pursing agent, modeled as an intelligent active Brownian particle capable of sensing the instantaneous target location and adjusting its direction of motion accordingly.
Segun Goh   +2 more
doaj   +1 more source

High Maneuverability Lenticular Airship [PDF]

open access: yes, 2012
This paper presents and describes a new lenticular shaped airship that allows 3D omnidirectional movements. The airship is intended to be part of a cooperative aerial system based in the synergy between an airship and a group of micro-quad rotors capable of long time missions as environmental, biodiversity monitoring, WiSAR missions, road monitoring ...
Pinto, Eduardo, Barata, José
openaire   +1 more source

Lean motion dynamics of a tilting personal mobility with the suspension device equipped with a mechanism converts driver’s actuation force into lean moment

open access: yesNihon Kikai Gakkai ronbunshu, 2019
The Lean Automobile is a minimalistic tilting personal mobility for urban transportation with the suspension device equipped with a mechanism which converts driver’s actuation force into lean moment.
Kentaro GOTO, Hideaki MURAYAMA
doaj   +1 more source

Ship's Maneuverability in Strong Wind [PDF]

open access: yesJournal of Navigation and Port Research, 2008
This paper deals with effect of wind forces and moment acting on the training ship SAE NURI. The results of drift angle and counter rudder angle due to wind effect are calculated by using the static equilibrium method especially with nonlinear mathematical expression, and then the critical wind velocity is found out.
Nam-Kyun Im, Van-Luong Tran
openaire   +1 more source

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