Results 41 to 50 of about 21,441 (307)
Jixie qiangdu, 2023 Propulsion system is an important part of shield machine, and its stiffness will affect the propelling and steering function. In order to obtain the effective parameterized stiffness model of shield propulsion system, and to accurately describe the ...
XU YouNan, SHI ZiQuan, HE Liu, CHU Hang
doaj
Viability study of sailing propulsion combined with a conventional system [PDF]
, 2011 For many years now, sails have been used as a propulsion system. At present, they are restricted to recreational/sport crafts since the appearance of the first steam vessels in the beginning of the 19 th century.
Pérez Arribas, Francisco Lázaro +3 more
core +1 more source
Designing displaced lunar orbits using low-thrust propulsion [PDF]
, 2010 The design of spacecraft trajectories is a crucial task in space mission design. Solar sail technology appears as a promising form of advanced spacecraft propulsion which can enable exciting new space science mission concepts such as solar system ...
Simo, J. +3 more
core +1 more source
Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading
Advanced Engineering Materials, EarlyView.The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley +1 more source
Swimmer with submerged SiO2/Al/LiNbO3 surface acoustic wave propulsion system
Biomimetic Intelligence and RoboticsAcoustic propulsion system presents a novel underwater propulsion approach in small scale swimmer. This study introduces a submerged surface acoustic wave (SAW) propulsion system based on the SiO2/Al/LiNbO 3 structure.
Deqing Kong +5 more
doaj +1 more source
Comparison of various approaches to numerical simulation of ship resistance and propulsion [PDF]
, 2014 The operation of a marine propeller dominates the flow interaction effects and alters the resistance on an upstream hull and the forces on a downstream rudder.
Winden, B. +6 more
core
Low-thrust enabled highly non-Keplerian orbits in support of future Mars exploration [PDF]
, 2011 The technology of high specific impulse propulsion systems with low thrust is improving, opening up numerous possibilities for future missions applying continuous thrust to force a spacecraft out of a natural Keplerian orbit into a displaced non ...
Bosquillon de Frescheville, Francois +8 more
core +1 more source
Advanced Engineering Materials, EarlyView.We develop a data‐driven method to derive the mathematical expressions of the Flory–Huggins interaction parameter χ for the swelling behavior of temperature–responsive hydrogels. Starting from initial assumptions of χ, our workflow combines Bayesian optimization, Flory–Rehner theory, and symbolic regression to generate candidate χ expressions.
Yawen Wang +2 more
wiley +1 more source
Centrifugal force propulsion engine [PDF]
, 2012 In contrast to a current propellant-based rocket, the concept in this thesis uses the rotational mass to create an imbalanced centrifugal force in a non-circular enclosure, which results in a propulsion force being generated.
Peter Hoang Nguyen
core +2 more sources
NUMERICAL PREDICTION OF SCALE EFFECTS ON THE PROPULSION PERFORMANCE OF JOUBERT BB2 SUBMARINE
Brodogradnja, 2022 The motivation of this study is to present the scale effects on the propulsion performance of Joubert BB2 submarine with MARIN7371R propeller. Joubert BB2 submarine was designed as a realistic attack submarine to be used in benchmarking studies ...
Ali Dogrul
doaj +1 more source