Results 111 to 120 of about 191,825 (368)

Evaluation of an Impulse Gravity Generator Based Beamed Propulsion Concept [PDF]

open access: yesarXiv, 2002
This paper analyzes the suitability of a beamed propulsion concept having properties consistent with the impulse gravity generator described by Podkletnov et al. [physics/0108005]. The use of this propulsion concept for orbital maneuver, Earth-to-orbit, interplanetary, and interstellar applications based on presently available experimental results and ...
arxiv  

Viscous propulsion in active transversely-isotropic media: Corrigendum [PDF]

open access: yes, 2018
We report a corrigendum to the paper 'Viscous propulsion in active transversely-isotropic media' [J. Fluid Mech. 812, 501-524, 2017 / arxiv 1608.01451].
arxiv   +1 more source

Electric propulsion for satellites and spacecraft: established technologies and novel approaches

open access: yes, 2016
This contribution presents a short review of electric propulsion (EP) technologies for satellites and spacecraft. Electric thrusters, also termed ion or plasma thrusters, deliver a low thrust level compared to their chemical counterparts, but they offer ...
S. Mazouffre
semanticscholar   +1 more source

Fuel Consumption and Emissions of Ocean-Going Cargo Ship with Hybrid Propulsion and Different Fuels over Voyage

open access: yesJournal of Marine Science and Engineering, 2020
Hybrid propulsion and using liquefied natural gas (LNG) as the alternative fuel have been applied on automobiles and some small ships, but research investigating the fuel consumption and emissions over the total voyage of ocean-going cargo ships with a ...
Congbiao Sui   +4 more
semanticscholar   +1 more source

Advances in Hybrid Icing and Frosting Protection Strategies for Optics, Lens, and Photonics in Cold Environments Using Thin‐Film Acoustic Waves

open access: yesAdvanced Engineering Materials, EarlyView.
This article provides a comprehensive overview of fundamentals and recent advances of transparent thin‐film surface acoustic wave technologies on glass substrates for monitoring and prevention/elimination of fog, ice, and frost. Fogging, icing, or frosting on optical lenses, optics/photonics, windshields, vehicle/airplane windows, and solar panel ...
Hui Ling Ong   +11 more
wiley   +1 more source

Chiral propulsion by electromagnetic fields [PDF]

open access: yesarXiv, 2018
We consider the propulsion of micron-scale chiral objects by electromagnetic fields in fluids - a problem with broad applications in microfluidics, pharmaceutics, and biomedicine. Because of the small size of the moving objects, the propulsion can be described by the Stokes equation possessing the time-reversal invariance.
arxiv  

Assessing the Powder Bed Fusion–Laser Beam Potential of Glass‐Forming Alloys Using Single and Multitrack Laser Glazing Experiments

open access: yesAdvanced Engineering Materials, EarlyView.
Characterizations of the expanse of processes parameter combinations that can be used to minimize cracking and porosity while optimizing crystallization and hardness are used to assess laser processing of four glass‐forming alloys. The set of viable alloys for laser additive manufacturing is not the same as for suction casting; some alloys are common ...
Soumya Mohan   +3 more
wiley   +1 more source

Modeling thermocapillary microgear rotation and transfer to translational particle propulsion [PDF]

open access: yes
In this study, we investigate the thermocapillary rotation of microgears at fluid interfaces and extend the concept of geometric asymmetry to the translational propulsion of micron-sized particles. We introduce a transient numerical model that couples the Navier-Stokes equations with heat transfer, displaying particle motion through a moving mesh ...
arxiv   +1 more source

Nuclear Propulsion

open access: yes, 2023
Nuclear propulsion utilizes nuclear reactions to produce energy, which is then used to propel a vehicle. There are three main forms of nuclear propulsion: naval nuclear propulsion, aero-nuclear propulsion, and space nuclear propulsion. Naval nuclear propulsion involves the use of nuclear reactors to power ships.
Bahram, Nassersharif,, Dale, Thomas,
openaire   +2 more sources

Future Directions for Electric Propulsion Research

open access: yes, 2020
The research challenges for electric propulsion technologies are examined in the context of s-curve development cycles. It is shown that the need for research is driven both by the application as well as relative maturity of the technology.
E. Dale, B. Jorns, A. Gallimore
semanticscholar   +1 more source

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