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The Coupled Orbit-Attitude Dynamics and Control of Electric Sail in Displaced Solar Orbits [PDF]

open access: goldInternational Journal of Aerospace Engineering, 2017
Displaced solar orbits for spacecraft propelled by electric sails are investigated. Since the propulsive thrust is induced by the sail attitude, the orbital and attitude dynamics of electric-sail-based spacecraft are coupled and required to be ...
Mingying Huo   +3 more
doaj   +2 more sources

Nonclassical correlation dynamics of Heisenberg XYZ states with (x, y)-spin--orbit interaction, x-magnetic field, and intrinsic decoherence effects

open access: goldOpen Physics
In quantum information, it is important to recognize the effects of additional interactions, such as spin–orbit interactions, on the quantum information resources of two-qubit Heisenberg states.
Aljuaydi Fahad   +3 more
doaj   +2 more sources

Neural Network based Fault Tolerant LQR Control for Orbital Maneuvering in LEO Satellites using Hall Effect Thrusters [PDF]

open access: yesAUT Journal of Modeling and Simulation, 2023
This paper develops a neural network-based fault tolerant LQR control for orbital maneuvering of satellites in low altitude orbit that are subjected to disturbances like earth gravity, atmospheric drag, third body, and solar radiation.
Elham Jahanbazi   +2 more
doaj   +1 more source

Some Special Types of Orbits around Jupiter

open access: yesAerospace, 2021
This paper intends to show some special types of orbits around Jupiter based on the mean element theory, including stationary orbits, sun-synchronous orbits, orbits at the critical inclination, and repeating ground track orbits.
Yongjie Liu   +3 more
doaj   +1 more source

Dynamic Modelling and Continuous Trajectory Tracking Control of Space Robots Based on Lie Group SE(3)

open access: yesInternational Journal of Aerospace Engineering, 2023
For space robots, it is difficult to track continuous time-varying manifolds on SE(3) by using traditional closed-loop control strategies, which are designed to track the position and the attitude separately.
Yong Wang   +4 more
doaj   +1 more source

Research on real-time reachability evaluation for reentry vehicles based on fuzzy learning

open access: yesOpen Astronomy, 2022
Accurate and rapid prediction of reentry trajectory and landing point is the basis to ensure the reentry vehicle recovery and rescue, but it has high requirements for the continuity and stability of real-time monitoring and positioning data and the ...
Ma Hong   +4 more
doaj   +1 more source

TOG Proteins Are Spatially Regulated by Rac-GSK3β to Control Interphase Microtubule Dynamics. [PDF]

open access: yesPLoS ONE, 2015
Microtubules are regulated by a diverse set of proteins that localize to microtubule plus ends (+TIPs) where they regulate dynamic instability and mediate interactions with the cell cortex, actin filaments, and organelles.
Kathryn P Trogden, Stephen L Rogers
doaj   +1 more source

Analysis and Design of the Automatic Flight Dynamics Operations For Geostationary Satellite Mission [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2009
Automation of the key flight dynamics operations for the geostationary orbit satellite mission is analyzed and designed. The automation includes satellite orbit determination, orbit prediction, event prediction, and fuel accounting.
Byoung-Sun Lee   +4 more
doaj   +1 more source

Ferrimagnetic Dynamics Induced by Spin‐Orbit Torques

open access: yesAdvanced Materials Interfaces, 2022
Ferrimagnets are the magnetic materials with the fastest current‐induced dynamics reported so far. Among them, rare‐earth transition‐metal (RE‐TM) alloys offer a fertile playground for studying the behavior of multi‐sublattice systems with tunable ...
Giacomo Sala, Pietro Gambardella
doaj   +1 more source

On the global dynamics of periodic triangular maps [PDF]

open access: yes, 2016
This paper is an extension of an earlier paper that dealt with global dynamics in autonomous triangular maps. In the current paper, we extend the results on global dynamics of autonomous triangular maps to periodic non-autonomous triangular maps. We show
Luis, Rafael
core   +2 more sources

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