Results 41 to 50 of about 22,488,979 (349)
Fault diagnosis method of shearer planetary gear transmission systemunder variable speed conditions
Gong-kuang zidonghua, 2021 When the shearer cuts the coal seam, the planetary gear transmission system of the traction unit is in a variable speed working condition, and the structure of the planetary gear transmission system is complicated.
MAO Qinghua1,2, +5 more
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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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Machines, 2023 Planetary gear systems have many advantages over other gear systems. Previous studies on its dynamic characteristics mostly used Earth as the reference system, which is inconsistent with the actual working conditions of many planetary gear systems, such ...
Bingwei Gao, Yongkang Wang, Guangbin Yu
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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
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
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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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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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
core +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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