Results 11 to 20 of about 431,247 (358)
Electric Propulsion Methods for Small Satellites: A Review
Aerospace, 2021 Over 2500 active satellites are in orbit as of October 2020, with an increase of ~1000 smallsats in the past two years. Since 2012, over 1700 smallsats have been launched into orbit. It is projected that by 2025, there will be 1000 smallsats launched per
Dillon O’Reilly +2 more
doaj +2 more sources
Self-Propulsion of Chemically Active Droplets [PDF]
Annual Review of Fluid Mechanics, 2022 Microscopic active droplets are able to swim autonomously in viscous flows. This puzzling feature stems from solute exchanges with the surrounding fluid via surface reactions or their spontaneous solubilization and from the interfacial flows resulting ...
S. Michelin
semanticscholar +1 more source
Battery Energy Storage Systems in Ships’ Hybrid/Electric Propulsion Systems
Energies, 2023 The shipping industry is going through a period of technology transition that aims to increase the use of carbon-neutral fuels. There is a significant trend of vessels being ordered with alternative fuel propulsion.
M. Kolodziejski, I. Michalska-Pożoga
semanticscholar +1 more source
High shear rate propulsion of acoustic microrobots in complex biological fluids
Science Advances, 2022 Untethered microrobots offer a great promise for localized targeted therapy in hard-to-access spaces in our body. Despite recent advancements, most microrobot propulsion capabilities have been limited to homogenous Newtonian fluids.
Amirreza Aghakhani +5 more
semanticscholar +1 more source
Overview of Propulsion Systems for Unmanned Aerial Vehicles
Energies, 2022 Unmanned Aerial Vehicle (UAV) propulsion technology is significantly related to the flight performance of UAVs, which has become one of the most important development directions of aviation.
Bowen Zhang +3 more
semanticscholar +1 more source
A Novel Integrated Gliding and Flapping Propulsion Biomimetic Manta-Ray Robot
Journal of Marine Science and Engineering, 2022 Bionic underwater robots are the intersection of biology and robotics; they have the advantages of propulsion efficiency and maneuverability. A novel vehicle that combines a gliding and flapping propulsion inspired by a manta ray is presented in this ...
Daili Zhang +4 more
semanticscholar +1 more source
Aircraft Hybrid-Electric Propulsion: Development Trends, Challenges and Opportunities
Journal of Control Automation and Electrical Systems, 2021 The present work is a survey on aircraft hybrid electric propulsion (HEP) that aims to present state-of-the-art technologies and future tendencies in the following areas: air transport market, hybrid demonstrators, HEP topologies applications, aircraft ...
M. A. Rendón +3 more
semanticscholar +1 more source
Stabilized detonation for hypersonic propulsion
Proceedings of the National Academy of Sciences of the United States of America, 2021 Significance There is now an intensifying international effort to develop robust propulsion systems for hypersonic and supersonic flight. Such a system would allow flight through our atmosphere at very high speeds and allow efficient entry and exit from ...
D. Rosato +5 more
semanticscholar +1 more source
Performance analysis of control allocation using data‐driven integral quadratic constraints
Advanced Control for Applications, Volume 4, Issue 4, December 2022., 2022 Abstract A new method is presented for evaluating the performance of a nonlinear control allocation system within a linear control loop. To that end, a worst‐case gain analysis problem is formulated that can be readily solved by means of well‐established methods from robustness analysis using integral quadratic constraints (IQCs).
Manuel Pusch +2 more
wiley +1 more source
In-orbit demonstration of an iodine electric propulsion system
Nature, 2021 Propulsion is a critical subsystem of many spacecraft1–4. For efficient propellant usage, electric propulsion systems based on the electrostatic acceleration of ions formed during electron impact ionization of a gas are particularly attractive5,6.
D. Rafalskyi +10 more
semanticscholar +1 more source