Thermosphere and satellite drag
Advances in Space Research, 2023 Accurate forecasts of thermosphere densities, realistic calculation of aerodynamic drag, and propagation of the uncertainty on the predicted orbit positions are required for conjunction analysis and collision avoidance decision making. The main focus of the Committee on Space Research (COSPAR) International Space Weather Action Teams (ISWAT) involved ...
Bruinsma, Sean +9 more
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Satellite Motion in a Manev Potential with Drag [PDF]
Astrophysics and Space Science, 2012 In this paper, we consider a satellite orbiting in a Manev gravitational potential under the influence of an atmospheric drag force that varies with the square of velocity.
Gkigkitzis, Ioannis +2 more
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Generative AI for Bayesian Computation [PDF]
EntropyGenerative Bayesian Computation (GBC) provides a simulation-based approach to Bayesian inference. A Quantile Neural Network (QNN) is trained to map samples from a base distribution to the posterior distribution.
Nick Polson, Vadim Sokolov
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Estimating Satellite Orbital Drag During Historical Magnetic Superstorms [PDF]
Space Weather, 2020 Understanding extreme space weather events is of paramount importance in efforts to protect technological systems in space and on the ground. Particularly in the thermosphere, the subsequent extreme magnetic storms can pose serious threats to low Earth ...
Denny M. Oliveira +3 more
doaj +4 more sources
Minimum thrust levels for spinning drag-free satellites = Niveaux minimums de la force motrice pour des satellites rotatoires sans résistance = Minimum triebkraftniveaus für rotierende wiederstandsfreie satelliten [PDF]
Automatica, 1975 A drag-free satellite, which contains an internal unsupported proof mass, is shielded from external forces such as solar pressure. Thrustors force the satellite to follow the proof mass and hence the satellite follows an almost purely gravitational orbit.
Olsder, Geert Jan, Powell, J. David
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Atmospheric drag effects on modelled low Earth orbit (LEO) satellites during the July 2000 Bastille Day event in contrast to an interval of geomagnetically quiet conditions [PDF]
Annales Geophysicae, 2021 In this work, we simulated the atmospheric drag effect on two model SmallSats (small satellites) in low Earth orbit (LEO) with different ballistic coefficients during 1-month intervals of solar–geomagnetic quiet and perturbed conditions. The goal of this
V. U. J. Nwankwo +10 more
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Aerodynamic Drag Characteristics of Ultra-Low Orbit Satellites
Shanghai Jiaotong Daxue xuebao, 2022 Taking the 180~300 km ultra-low orbit satellite as the research object, the aerodynamic drag characteristics of the typical shapes were studied by using the direct simulation Monte Carlo (DSMC) method in the free molecular flow simulation method, which ...
WANG Xiaoliang, YAO Xiaosong, GAO Shuang, LIU Guohua
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Drag Sail Conceptual Design for Satellite Orbit Reduction in Low Earth Orbit [PDF]
فناوری در مهندسی هوافضا, 2021 The main purpose of this paper is to provide a regular design process of drag sail for deorbiting a satellite in LEO orbit concerning the mission requirements. In this regard, the design requirements and manufacturing considerations of the drag sail have
Ali Kasiri +2 more
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De-Orbit Maneuver Demonstration Results of Micro-Satellite ALE-1 with a Separable Drag Sail
Applied Sciences, 2023 ALE-1, a micro-satellite created for the demonstration of artificial shooting stars, required orbital descent before mission execution due to safety aspects in orbit.
Kohei Takeda +7 more
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ON THE CHARACTER OF AN ARTIFICIAL SATELLITE DRAG UNDER VARIOUS STATES OF SOLAR AND GEOMAGNETIC ACTIVITY [PDF]
Radio Physics and Radio Astronomy, 2020 Purpose: The artificial satellites drag in the atmosphere remains an urgent problem to date. In this work, the artificial satellites data are used in order to study the atmosphere state under various manifestations of solar and geomagnetic activity.
V. H. Komendant
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