Results 51 to 60 of about 36,758 (316)
Effects of fin-hull geometric parameters on propulsion performance in bionic vehicles
Zhongguo Jianchuan YanjiuObjectiveThis study aims to systematically quantify the effects of fin-hull geometric configuration on the propulsion performance of bionic undulating-fin vehicles employing media and/or paired fin propulsion (MPF).
Cong SUN +3 more
doaj +1 more source
Review of State-of-the-Art Green Monopropellants: For Propulsion Systems Analysts and Designers
Aerospace, 2021 Current research trends have advanced the use of “green propellants” on a wide scale for spacecraft in various space missions; mainly for environmental sustainability and safety concerns.
Ahmed E. S. Nosseir +2 more
doaj +1 more source
Propulsive performance of a body with a traveling-wave surface
Physical Review E, 2012 A body with a traveling-wave surface (TWS) is investigated by solving the incompressible Navier-Stokes equation numerically to understand the mechanisms of a novel propulsive strategy. In this study, a virtual model of a foil with a flexible surface which performs a traveling-wave movement is used as a free swimming body.
Fang-Bao, Tian +2 more
openaire +3 more sources
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
Hydrodynamic and Flow Field Characteristics of Water Jet Propulsion under Mooring Conditions
Journal of Marine Science and Engineering, 2022 The acceleration characteristics of a water jet-propelled ship during startup are related to its performance under mooring conditions. Water jet propulsion cavitation during startup increases the vibration and noise of the whole ship.
Dagang Zhao +4 more
doaj +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
Servicing polar platforms using electric propulsion [PDF]
, 1992 The future of space development has been examined in the context of the infrastructure necessary support it. It is concluded that the selection of propulsion systems for in-orbit transportation requires the development of general computer codes capable
Welch, C. S.
core
Time-optimal trajectories to circumsolar space using solar electric propulsion [PDF]
, 2013 The aim of this paper is to explore the capabilities of a solar electric propelled spacecraft on a mission towards circumsolar space. Using an indirect approach, the paper investigates minimum time of transfer (direct) trajectories from an initial ...
Vasile, Massimiliano +5 more
core +1 more source
AerospaceEquivalent ratio (ER) is an important factor affecting detonation characteristics and propulsion performance of rotating detonation rocket engine (RDRE).
Xiao Xu, Qixiang Han, Yining Zhang
doaj +1 more source
Aerospace, 2023 Since the invention of rockets, mankind has been constantly trying to explore the universe. It was not until the beginning of the last century that electric propulsion technology was introduced.
Yifan Du +8 more
doaj +1 more source