Results 11 to 20 of about 688,541 (286)
An aerostable drag-sail device for the deorbit and disposal of sub-tonne, low earth orbit spacecraft [PDF]
, 2006 There is an increasing amount of debris in low Earth orbit arising from the disintegration and collision of old spacecraft which have not been removed from orbit. A ‘bolt-on’ deorbit device to be attached to new spacecraft is therefore proposed, which
Harkness, Patrick George
core +7 more sources
Spacecraft Flight in the Atmosphere [PDF]
, 2014 Spacecraft that orbit in Low Earth Orbit travel through a tenuous atmosphere and hence experience aerodynamic forces that can become quite significant, specially at low altitudes. The presence of these forces can become a major design driver for missions
Virgili Llop, Josep
core +7 more sources
Rarefied gas effects on the aerodynamics of high area-to-mass ratio spacecraft in orbit [PDF]
, 2013 The aerodynamic situation of a satellite-on-a-chip operating in low Earth orbit bears some resemblance to a classical Crookes radiometer. The large area-to-mass ratio characteristic of a SpaceChip means that very small surface-dependent forces produce ...
White, Craig +4 more
core +4 more sources
A Framework to Estimate Local Atmospheric Densities With Reduced Drag‐Coefficient Biases
Space Weather, 2022 An accurate estimation of upper atmospheric densities is crucial for precise orbit determination (POD), prediction of low Earth orbit satellites, and scientific studies of the Earth's atmosphere.
Vishal Ray +4 more
doaj +1 more source
Drag Coefficient Constraints for Space Weather Observations in the Upper Thermosphere
Space Weather, 2022 The space weather research community relies heavily on thermospheric density data to understand long‐term thermospheric variability, construct assimilative, empirical, and semiempirical global atmospheric models and validate model performance. One of the
Valerie Bernstein, Marcin Pilinski
doaj +1 more source
ATMOSPHERIC DRAG PERTURBATION EFFECT ON THE SATELLITES ORBITS [PDF]
مجلة جامعة الانبار للعلوم الصرفة, 2012 : In this paper the drag perturbation for the law orbit are studded ,Koll-method is suitable to used hear, equation of motion it's solved by numerical integration ;Rang-Kota-method was used ; to find the components of velocity and position and find the ...
Abdulh Rahman Hussain Salih
doaj +1 more source
Satellite drag effects due to uplifted oxygen neutrals during super magnetic storms [PDF]
Nonlinear Processes in Geophysics, 2017 During intense magnetic storms, prompt penetration electric fields (PPEFs) through E × B forces near the magnetic equator uplift the dayside ionosphere. This effect has been called the dayside super-fountain effect.
G. S. Lakhina, B. T. Tsurutani
doaj +1 more source
Mode Switching Control for Drag-Free Satellite Based on Region of Attraction
Space: Science & Technology, 2023 This paper aims to propose a switching rule to improve the efficiency and stability of the mode switching process for the drag-free satellite. The switching rules will ensure the stability of the different controllers during the switching process. Unlike
Xiaobin Lian +5 more
doaj +1 more source
Satellite motion in a Manev potential with drag [PDF]
Astrophysics and Space Science, 2012 Accepted for publication in Astrophysics and Space ...
Kirk, Samantha +2 more
openaire +3 more sources
气体物理, 2023 The influence of solar and geomagnetic activities on electrical propulsion system of ultra-low orbit gravity satellite was evaluated for the current 25th solar cycle. The orbit simulation was carried out and the data of GOCE mission was analyzed.
Lin-wei WANG, Kai CUI, Da-ren YU
doaj +1 more source