Results 41 to 50 of about 22,702,715 (393)
Applied Sciences, 2022 As the foundation and core of various heavy aircraft transmission systems, the reliability level of large-scale aviation planetary mechanism restricts the economic affordability and service safety for the aircraft to a great extent.
Ming Li, Yuan Luo, Liyang Xie
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Kepler detection of a new extreme planetary system orbiting the subdwarf-B pulsator KIC 10001893 [PDF]
, 2014 KIC 10001893 is one out of 19 subdwarf-B (sdB) pulsators observed by the Kepler spacecraft in its primary mission. In addition to tens of pulsation frequencies in the g-mode domain, its Fourier spectrum shows three weak peaks at very low frequencies ...
R. Silvotti +9 more
semanticscholar +1 more source
Jixie chuandong, 2023 Planetary herringbone gears are increasingly used in the high-power marine transmission system. In order to meet the noise requirements of transmission system of modern ships, the vibration reduction design of planetary herringbone gear transmission ...
Zhao Tianyu +3 more
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On the sensitivity of extrasolar mass-loss rate ranges: HD 209458b a case study [PDF]
, 2013 We present a 3D hydrodynamic study of the effects that different stellar wind conditions and planetary wind structures have on the calculated Ly-$\alpha$ absorptions produced during the transit of HD 209458b.
Costa, A. +5 more
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The HU Aqr planetary system hypothesis revisited [PDF]
, 2014 We study the mid-egress eclipse timing data gathered for the cataclysmic binary HU Aquarii during the years 1993-2014. The (O-C) residuals were previously attributed to a single ~7 Jupiter mass companion in ~5 au orbit or to a stable 2-planet system with
K. Goździewski +14 more
semanticscholar +1 more source
The birth environment of planetary systems [PDF]
Royal Society Open Science, 2020 Star and planet formation are inextricably linked. In the earliest phases of the collapse of a protostar, a disc forms around the young star and such discs are observed for the first several million years of a star’s life. It is within these circumstellar, or protoplanetary, discs that the first stages of planet formation occur.
openaire +6 more sources
Conceptual Design of Rover’s Mobility System for Ground-Based Model [PDF]
Journal of Astronomy and Space Sciences, 2009 In recent years, lots of studies on the planetary rover systems have been performed around space advanced agencies such as NASA, ESA, JAXA, etc. Among the various technologies for the planetary rover system, the mobility system, navigation algorithm ...
Youn-Kyu Kim +4 more
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The 1:1 resonance in Extrasolar Systems: Migration from planetary to satellite orbits
, 2011 We present families of symmetric and asymmetric periodic orbits at the 1/1 resonance, for a planetary system consisting of a star and two small bodies, in comparison to the star, moving in the same plane under their mutual gravitational attraction.
A. Morbidelli +28 more
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IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingEnsuring the stability of open-pit mine slopes is crucial for safe and efficient mining operations. To analyze slope stability and assess geological disaster risks, LiDAR point-cloud data are widely used to create high-precision 3-D models.
Tao Chen +6 more
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Dynamical Habitability of Planetary Systems [PDF]
Astrobiology, 2010 The problem of the stability of planetary systems, a question that concerns only multiplanetary systems that host at least two planets, is discussed. The problem of mean motion resonances is addressed prior to discussion of the dynamical structure of the more than 350 known planets.
Dvorak, Rudolf +24 more
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