Results 31 to 40 of about 431,247 (358)
Acoustic propulsion of nano- and microcones: dependence on the viscosity of the surrounding fluid [PDF]
Langmuir 38, 10736-10748 (2022), 2022 This article investigates how the acoustic propulsion of cone-shaped colloidal particles that are exposed to a traveling ultrasound wave depends on the viscosity of the fluid surrounding the particles. Using acoustofluidic computer simulations, we found that the propulsion of such nano- and microcones decreases strongly and even changes sign for ...
arxiv +1 more source
Fringe Visibility Estimators for the Palomar Testbed Interferometer [PDF]
, 1998 Visibility estimators and their performance are presented for use with the Palomar Testbed Interferometer (PTI). One operational mode of PTI is single-baseline visibility measurement using pathlength modulation with synchronous readout by a NICMOS-3 ...
Colavita Jet Propulsion, M. M. Colavita
core +4 more sources
Perspectives, frontiers, and new horizons for plasma-based space electric propulsion
Physics of Plasmas, 2020 There are a number of pressing problems mankind is facing today that could, at least in part, be resolved by space systems. These include capabilities for fast and far-reaching telecommunication, surveying of resources and climate, and sustaining global ...
I. Levchenko +8 more
semanticscholar +1 more source
Self-propulsion of liquid marbles: Leidenfrost-like levitation driven by marangoni flow [PDF]
, 2015 Self-propulsion of liquid marbles filled with aqueous alcohol solutions and placed on a water surface is reported. The characteristic velocity of the marbles is ca. 0.1 m/s.
Aharoni, Hadas +5 more
core +2 more sources
Propulsion on a superhydrophobic ratchet [PDF]
Scientific Reports, 2014 Liquids in the Leidenfrost state were shown by Linke to self-propel if placed on ratchets. The vapour flow below the liquid rectified by the asymmetric teeth entrains levitating drops by viscosity. This effect is observed above the Leidenfrost temperature of the substrate, typically 200°C for water.
Dupeux, Guillaume +4 more
openaire +6 more sources
Bionic Propulsion on Water and Measurement of Propulsion
Physics Procedia, 2012 AbstractTraditional propulsion fashion on water are propeller propulsion and jet propulsion, but the efficiency relatively low. Used by biological propulsion, after the last million years of evolution, the maximum utilization of its power. Bionic propulsion system designed in this paper consists of two large travel umbrella wing plate in reciprocating ...
Zhao Si-yuan +4 more
openaire +2 more sources
Stage reduced counter-rotating axial compressor for jet engine
International Journal for Simulation and Multidisciplinary Design Optimization, 2021 Variation in the states of system, mass flow and pressure are some of the disturbances which are experienced by the compressors in the jet engine under working condition.
Ferdaus F. +3 more
doaj +1 more source
Genetic algorithm-based multiple moving target reaching using a fleet of sailboats
IET Cyber-systems and Robotics, 2019 This study addresses the problem of Dynamic Travelling Salesman Problem for a multi-agent system using a fleet of sailboats. A genetic algorithm (GA) is proposed, which attributes to each agent a varying number of targets to be collected.
Viel Christophe +4 more
doaj +1 more source
Maximizing propulsive thrust of a driven filament at low Reynolds number via variable flexibility [PDF]
Soft Matter 13, 2339-2347 (2017), 2016 At low Reynolds numbers the locomotive capability of a body can be dramatically hindered by the absence of inertia. In this work, we show how propulsive performance in this regime can be significantly enhanced by employing spatially varying flexibility.
arxiv +1 more source
Comparison of Active Drag Using the MRT-Method and the MAD-System in Front Crawl Swimming
Proceedings, 2018 The purpose of this study was to compare the active drag values estimated by the MRT-method and the MAD-system. Six male competitive swimmers participated in this study and performed front crawl with arms only condition.
Kenzo Narita +3 more
doaj +1 more source