Results 21 to 30 of about 1,075,136 (370)
Planetary mass function and planetary systems [PDF]
Monthly Notices of the Royal Astronomical Society, 2010 7 pages, MNRAS ...
openaire +4 more sources
Quantifying the Similarity of Planetary System Architectures [PDF]
A&A 651, A61 (2021), 2021 The planetary systems detected so far already exhibit a wide diversity of architectures, and various methods are proposed to study quantitatively this diversity. Straightforward ways to quantify the difference between two systems and more generally, two sets of multiplanetary systems, are useful tools in the study of this diversity.
arxiv +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
Search for Nanosecond Near-infrared Transients around 1280 Celestial Objects [PDF]
, 2019 Stars and planetary ...
Barrett, Colin T +18 more
core +2 more sources
Planetary systems in star clusters [PDF]
Proceedings of the International Astronomical Union, 2014 AbstractIn the solar neighborhood, where the typical relaxation timescale is larger than the cosmic age, at least 10% to 15% of Sun-like stars have planetary systems with Jupiter-mass planets. In contrast, dense star clusters, characterized by frequent close encounters, have been found to host very few planets.
Kouwenhoven, M.B.N. +3 more
openaire +6 more sources
Origin and Formation of Planetary Systems [PDF]
Astrobiology, 2010 To estimate the occurrence of terrestrial exoplanets and maximize the chance of finding them, it is crucial to understand the formation of planetary systems in general and that of terrestrial planets in particular. We show that a reliable formation theory should not only explain the formation of the Solar System, with small terrestrial planets within a
Huub Röttgering +26 more
openaire +8 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
doaj +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
doaj