Results 91 to 100 of about 2,119 (276)
The Influence of J2 on Formation Flying of Micro-Satellites in Low Near Equatorial Orbits
Journal of Advances in Information Technology, 2014 Taking into considerations the effect of the Earth’s oblateness parameters, particularly J2, the present work assess such influence on the formation flight of micro satellites in near equatorial low orbits. The modified Clohessy-Wiltshire equations
Harijono Djojodihardjo
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In Situ Two‐Dimensional Residual Stress Characterization of Thin Films
Advanced Materials Technologies, EarlyView.An integrated in situ curvature metrology platform combining speckle‐based curvature optical metrology (SCOM) with multi‐beam optical sensors (MOS) enables spatially resolved two‐dimensional curvature mapping of thick sputtered coatings. The SCOM technique provides excellent agreement with MOS while providing an extended measurable curvature range ...
Wai Jue Tan +6 more
wiley +1 more source
The Astrophysical JournalMultiplanet systems face significant challenges to detection. For example, farther-orbiting planets have a reduced signal-to-noise ratio in radial velocity detection methods, and small mutual inclinations between planets can prevent them from all ...
Thea H. Faridani +4 more
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Upscaling Pulsed Laser Fragmentation in Liquids by Advanced Free‐Flow Setups
Advanced Materials Technologies, EarlyView.Advanced flow setups providing thin colloid films are introduced to upscale pulsed laser fragmentation in liquids for sustainable nanoparticle synthesis. Their potential is demonstrated by yielding remarkably small ZnO nanoparticles of <7 nm. Numerical simulations complement the study, revealing that the superior performance can be attributed to ...
Jan Lino Kricke +5 more
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Micro-Satellite Attitude Determination with Only a Single Horizon Sensor
MATEC Web of Conferences, 2016 Through using measurement from only a single horizon sensor, this paper presented a quaternion-based 3-axis attitude determination method, which can be implemented on board micro-satellites and applied over a whole orbital period.
Ouyang Gaoxiang, Dong Xin, Li Xin
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Egyptian Journal of Remote Sensing and Space Sciences, 2012 The primary objective of this work is to develop an effective spacecraft orbit control algorithm suitable for spacecraft orbital maneuver and/or rendezvous. The actual governing equation of a spacecraft orbiting the earth is merely nonlinear. Disturbance
Tamer Mekky Ahmed Habib
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Galaxy clusters: oblate or prolate? [PDF]
Monthly Notices of the Royal Astronomical Society, 2000 6 pages, 6 figures. MNRAS (in press)
openaire +2 more sources
Use of planetary oblateness for parking-orbit alinement [PDF]
, 1968 Planetary gravitation and oblateness used for parking orbit alignment in Mars ...
Thibodeau, J. R., III
core
Hydro‐ and Lipophilicity of Molecular‐Size‐Controlled Hydrogel Drug Carriers
Advanced Materials Technologies, EarlyView.We investigate nano‐sized hydrogel drug carriers with tailored hydro‐ and lipophilicity. We design their encapsulation and structure‐forming capabilities and follow them in real time during fabrication using time‐resolved and in situ grazing incidence x‐ray scattering.
Elisabeth Erbes +21 more
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Do oblate eyeballs exist? A rare case of rhegmatogenous retinal detachment in an elliptical globe
Indian Journal of Ophthalmology, 2019 A patient, being a moderate myope with an axial length of 24.71 mm, presented to us with a fresh rhegmatogenous retinal detachment and marked peripheral chorioretinal degeneration.
M Dheepak Sundar +4 more
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