Results 21 to 30 of about 18,950 (295)
Analytical landing trajectories for embedded autonomy [PDF]
, 2010 This paper considers an optimal guidance law for the initial braking phase of a soft landing mission on a celestial body without atmosphere in which boundary conditions on height and velocity are specifed. The optimal lander attitude for the minimum fuel
Jing, W.X. +5 more
core +4 more sources
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 +1 more source
MATHEMATICAL MODELING OF ELECTRIC HEATING ENGINE ON START-UP
Авіаційно-космічна техніка та технологія, 2019 The subject of research in the article is the process of accelerating the working fluid in an electric heating thruster, which is part of the onboard propulsion system used in space tug.
Андрей Владимирович Погудин
doaj +1 more source
Numerical Investigation of the Hydrodynamic Characteristics of 3-Fin Surfboard Configurations
Applied Sciences, 2022 Surfing is a popular sport, with the associated market forecast to reach 2.6 billion US dollars by 2027. In the published literature, there is a range of investigations into the performance of surfboard fins. Some studies model a single fin or review the
Sam Crameri +2 more
doaj +1 more source
Fundamental Ion-Surface Interactions in Plasma Thrusters [PDF]
, 2007 Ion thrusters offer the potential to enable many future interplanetary robotic missions presently under consideration by NASA. To realize the benefits offered by these low thrust devices, the sputtering mechanisms that are responsible for the ...
Kolasinski, Robert David
core +1 more source
A Directional Microplasma Thruster Exhibiting a Switchable Intense Plasma Coupling
IEEE Access, 2020 Conventional cold and warm gas thrusters with low specific impulses and thrust greatly limit the capability of nanosatellites to conduct meaningful plane and attitude changes in space.
Sung-O Kim +2 more
doaj +1 more source
Solid state MPD thruster with applied magnetic field
, 2007 A solid state MPD thruster with applied magnetic field has been investigated. The MPDhas been operated with applied fields up to 0.4 T. Current, impulse bit and ablated masshave been measured.
Coletti, M. +3 more
core +2 more sources
DESIGN AND DEVELOPMENT OF AUTO DEPTH CONTROL OF REMOTELY OPERATED VEHICLE USING THRUSTER SYSTEM [PDF]
Journal of Mechanical Engineering and Sciences, 2014 Remotely Operated Vehicles are underwater robots designed specifically for surveillance, monitoring and collecting data for underwater activities. In the underwater vehicle industries, the thruster is an important part in controlling the direction, depth
F.A. Ali +4 more
doaj +1 more source
ECRA thruster advances: 30W and 200W prototypes latest performances
, 2023 International audienceAbstract The H2020 MINOTOR project focused on the study and the optimization of the ECRA thruster, an electric propulsion system for satellites.
Packan, Denis +7 more
core +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Febrile neutropenia (FN) is a frequent and serious complication in children receiving cancer therapy. Standardizing FN management across Asia is challenging due to variable healthcare infrastructure, diagnostic capacity, and infection patterns; however, it could improve resource use and patient outcomes.
Joliza Patricia Cañeba +29 more
wiley +1 more source