Results 31 to 40 of about 936 (166)

The X-43A Six Degree of Freedom Monte Carlo Analysis [PDF]

This report provides an overview of the Hyper-X research vehicle Monte Carlo analysis conducted with the six-degree-of-freedom simulation. The methodology and model uncertainties used for the Monte Carlo analysis are presented as permitted.
Bahm C., CockrellJr, Davis C., Engelund W. C., Marshall L. A., Marshall L. A., Morelli E. A.   +6 more
core   +2 more sources

Flight Control of a Novel Distributed Tiltrotor UAV With Experiments

IET Control Theory &Applications, Volume 20, Issue 1, January/December 2026.
Considering the mode transition control of a novel distributed tiltrotor UAV, we designed a fast fixed‐time sliding mode attitude controller to improve the response speed and robustness of the control system. Furthermore, a smooth mode transition strategy is developed to guarantee the stable conversion between fixed‐wing and helicopter modes ...
Li Yu, Yong Ding, Peng Wang, Jialong Zhang, Lei Ye   +4 more
wiley   +1 more source

The X-43A Six Degree of Freedom Monte Carlo Analysis [PDF]

, 2008
This report provides an overview of the Hyper-X research vehicle Monte Carlo analysis conducted with the six-degree-of-freedom simulation. The methodology and model uncertainties used for the Monte Carlo analysis are presented as permitted.
Bahm, Catherine, Baumann, Ethan, Beck, Roger, Strovers, Brian   +3 more
core   +1 more source

Processos de identificação de parâmetros físicos para obtenção de modelo matemático de um veículo autônomo submarino [PDF]

, 2021
Este projeto visa estabelecer uma postura vanguardista na construção de veículos autônomos subaquáticos (AUV), introduzindo assim aos discentes do curso de graduação em Engenharia de Controle e Automação as possibilidades de observação e/ou atuação em ...
Galeski, Felipe Lourenço, Gamboa Peñaloza, Elmer A., Lima, Sigmar de   +2 more
core  

Submarine rudder stern-plane configuration for optimum manoeuvring

MATEC Web of Conferences, 2018
The purpose of the present study is to investigate submarine rudder stern-plane configuration to obtain optimum manoeuvring characteristics. Three configurations are investigated: +, x and y configuration.
Suastika Ketut, Virliani Putri, Wasis D. Aryawan   +2 more
doaj   +1 more source

A Hybrid A*‐APF Path Planning Method for Ships Entering the Berthing Waters

IET Intelligent Transport Systems, Volume 20, Issue 1, January/December 2026.
This paper presents a two‐stage hybrid path planning approach for ship berthing: the first stage builds an accurate environmental model based on berth features and the second stage combines an improved A* algorithm (with directional consistency penalty) and the artificial potential field method to generate feasible paths and enhance local obstacle ...
Zhuo Wen, Jinfen Zhang, Jiongjiong Liu, Wu Ning   +3 more
wiley   +1 more source

Real‐Time Implementation of Finite Control Set Model Predictive Control for BLDC Motors With Dynamic Speed References on ESP32

IET Power Electronics, Volume 19, Issue 1, January/December 2026.
This paper investigates the application of Finite Control Set Model Predictive Control (FCS‐MPC) for Brushless DC (BLDC) motor speed regulation under dynamic references, including sinusoidal, square, triangular, and sawtooth signals. A novel cost function is introduced to evaluate switching frequency effects, and the influence of different weighting ...
Ahmad Entezari, Arash Dehestani Kolagar, Mohammad Reza Alizadeh Pahlavani   +2 more
wiley   +1 more source

Numerical Study on the Influence of Rudder Fillets on Submarine Wake Field and Noise Characteristics

Journal of Marine Science and Engineering
The submarine rudder configuration and arrangement significantly impact its hydrodynamic performance. This paper takes the SUBOFF standard submarine model as the research object, constructs a geometrically parameterized rudder fillet structure based on ...
Hao Yuan, Eryun Chen, Xingsheng Liu, Ailing Yang   +3 more
doaj   +1 more source

Demographic Parameters of Iberian Killer Whales Between 2011 and 2023

Marine Mammal Science, Volume 42, Issue 1, January 2026.
ABSTRACT The Iberian killer whale subpopulation was assessed as critically endangered (CR) by the IUCN red list of threatened species based on the available information until 2011 on its low abundance, high newborn mortality, and dependency on the endangered Atlantic bluefin tuna.
Ruth Esteban, Pauline Gauffier, Alfredo López, Francisco J. Gil‐Vera, Jörn Selling, Lilian Haristoy, Rocio Espada Ruiz, Pierre Guibert, André Días, Alfredo Rodrigues, Alejandro Onrubia, Mario Morcillo, German Garrote, Leire Ruiz, Gorka Ocio, Sara Magalhães, Annemieke Podt, Ezequiel Andreu, João Gonçalves, José M. Brotons, Francico Martinho, Gonçalo Abrantes, Mafalda Moore, Daniela Nobre, Xabier Vázquez Pumariño, Paula Méndez‐Fernandez, José A. Vázquez, Michel Wiese, Laura González García, Georgina Cabayol, Jan Haelters, Victoria Pouey‐Santalou, Philippe Verborgh   +32 more
wiley   +1 more source

Design and Analysis of an Origami Robot With Tensegrity Characteristics

Applied Bionics and Biomechanics, Volume 2026, Issue 1, 2026.
In recent years, small ground robots have demonstrated significant potential in the exploration of complex environments and in rescue operations. However, the rigid structure of conventional robots affects the adaptability and popularity of robots. The research team was inspired by features such as the miniaturization and transport costs of origami ...
Peng Ni, Jianwei Sun, Quan Li, Keyi Chen, Guowu Wei   +4 more
wiley   +1 more source