FEA and Structural Optimization of the Planet Carrier of the Speed-increase Gearbox by Pan Jinkun, Geng Feng

“…On the purpose of lightweight design,on the condition that it meets the strength and stiffness requirements the designer began to structural optimization of the planet carrier of speed-increase gearbox.First,the analysis of the strength and stiffness of planet carrier is carried out,and then the structure size which posts an important impact on planet carrier is decided as the design variable.Second,using high-end mesh morph software,the parameterized model of grid is established,and then go further,the optimized model of planet carrier on the purpose of decreasing its weight is built.Finally,the optimized analysis is carried out in combination of Isight multidisciplinary optimization software,the reasonable design plan for lightweight of planet carrier is obtained.The modal analysis towards the optimized planet carrier is carried out,and its natural frequency completely avoid meshing frequency,so as to avoid resonance phenomenon.…”
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Determining Symmetry Properties of Gravitational Fields of Terrestrial Group Planets by R.A. Kascheev, I.O. Novlyanskaya

“…According to the results of calculations carried out for the Earth, Moon, Mars, and Venus, the values of the criteria vary considerably for different types of symmetries and for different planets. …”
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ART AS COMMUNICATION IN HOTSPOTS OF THE PLANET (ON THE EXAMPLE OF MODERN SYRIA). PART ONE by Oksana Kosiuk

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The Dynamical History of HIP-41378 f—Oblique Exorings Masquerading as a Puffy Planet by Tiger Lu, Gongjie Li, Ben Cassese, D. N. C. Lin

“…The super-puff HIP-41378 f represents a fascinating puzzle due to its anomalously low density on a far-out orbit in contrast with other known super-puffs. …”
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Prediction of Winter Wheat Parameters with Planet SuperDove Imagery and Explainable Artificial Intelligence by Gabriele De Carolis, Vincenzo Giannico, Leonardo Costanza, Francesca Ardito, Anna Maria Stellacci, Afwa Thameur, Sergio Ruggieri, Sabina Tangaro, Marcello Mastrorilli, Nicola Sanitate, Simone Pietro Garofalo

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An HST Transmission Spectrum of the Closest M Dwarf Transiting Rocky Planet LTT 1445Ab by Katherine A. Bennett, David K. Sing, Kevin B. Stevenson, Hannah R. Wakeford, Zafar Rustamkulov, Natalie H. Allen, Joshua D. Lothringer, Ryan J. MacDonald, Nathan J. Mayne, Guangwei Fu

“…This presumably simple question is the first that must be answered to understand the prevalence of nearby habitable planets. A mere 6.9 pc from Earth, LTT 1445A is the closest transiting M dwarf system, and its largest known planet, at 1.31 R _⊕ and 424 K, is one of the most promising targets in which to search for an atmosphere. …”
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JWST/NIRCam 4–5 μm Imaging of the Giant Planet AF Lep b by Kyle Franson, William O. Balmer, Brendan P. Bowler, Laurent Pueyo, Yifan Zhou, Emily Rickman, Zhoujian Zhang, Sagnick Mukherjee, Tim D. Pearce, Daniella C. Bardalez Gagliuffi, Lauren I. Biddle, Timothy D. Brandt, Rachel Bowens-Rubin, Justin R. Crepp, James W. Davidson Jr., Jacqueline Faherty, Christian Ginski, Elliott P. Horch, Marvin Morgan, Caroline V. Morley, Marshall D. Perrin, Aniket Sanghi, Maïssa Salama, Christopher A. Theissen, Quang H. Tran, Trevor N. Wolf

“…These observations also place deep limits on wider-separation planets in the system, ruling out 1.1 M _Jup planets beyond 15.6 au (0.″58), 1.1 M _Sat planets beyond 27 au (1″), and 2.8 M _Nep planets beyond 67 au (2.″5). …”
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Fatigue Life Analysis and Structure Optimization of Planet Carrier of the Large Power Wind Turbine Speed- increase Gearbox by Fan Weimin, Yang Yuliang, Li Zhen

“…The fatigue life analysis of the planet carrier of wind turbine speed- increase gearbox is carried out by using the rain flow circulation count method and Miner linear cumulative damage theory,and the fatigue life of the planet carrier is obtained. …”
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Earth Detecting Earth: At What Distance Could Earth’s Constellation of Technosignatures Be Detected with Present-day Technology? by Sofia Z. Sheikh, Macy J. Huston, Pinchen Fan, Jason T. Wright, Thomas Beatty, Connor Martini, Ravi Kopparapu, Adam Frank

“…., planetary radar) beating out its nearest nonradio competitor by a factor of 10 ^3 in detection distance. …”
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Marguerite Mespoulet et Madeleine Mignon en Irlande pour les Archives de la Planète : influences hors champ by Karine Bigand

“…The mission to Ireland was one of the first to be carried out, by two experienced travellers and confirmed intellectuals, Marguerite Mespoulet and Madeleine Mignon. …”
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Strength Analysis on Propel Gearbox of Hydraulic Excavator by Wei Zou

“…Taking the external load distribution on sprocket wheel and meshing forces of planetary gear trains into account， the strength of case and the three-stage planet carrier assembly under three working conditions is analyzed by using Abaqus， comparison and analysis of three solutions of planet carrier and pins structure is carried out， and the accuracy of the FEA result is confirmed， which provides the basis for subsequent design and manufacture.…”
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Interior and Gravity Field Models for Uranus Suggest a Mixed-composition Interior: Implications for the Uranus Orbiter and Probe by Zifan Lin, Sara Seager, Benjamin P. Weiss

“…The Uranus Orbiter and Probe (UOP), the next NASA flagship mission prioritized by the Planetary Science and Astrobiology Survey 2023–2032, will constrain the planet's interior by measuring its gravity and magnetic fields. …”
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Research and Analysis of Planetary Shaft Assembly Process of the Wind Power Gearbox based on the Technology of Flexible Pin by Zou Junwei, Zhu Meiling

“…The deeply analysis of the flexible pin shaft component structure of wind power gearbox planet wheel and assembly relationship are carried out,and the variable of the influence factor on the planet flexible pin assembly is confirmed.Through the experiment,the variable data is extracted,the relation curve and the function relationship between the size and temperature rise of the planet wheel pin shaft hole are obtained,the law between the flexible pin shaft sleeve and the three variables of the clearance after normal temperature,preset clearance,combination of instantaneous clearance of locating ring is found.Finally,through the simulation experiment and final assembly results,the assembly technology research scheme of planetary wheel flexible pin component is verified.…”
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Kinematics and Dynamics Analysis and Simulation of the NGW Type Differential Mechanism by Liu Ting, Cui Peijuan, Wang Chunming, Xiao Chong, Yue Zhenbo, Beijing Research Institute of Precise Mechatronic Controls Equipment

“…The kinematics and rigid- body dynamics theoretically analysis and the ADAMS simulations of the NGW type planet differential mechanism are carried out. The kinematics analysis show the results that the mechanism can realize the velocity synthesis and differential operation with different speed of two input shafts.Through the rigid- body dynamics analysis,the results as following. …”
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Effects of Thermodynamics on the Concurrent Accretion and Migration of Gas Giants in Protoplanetary Disks by Hening Wu, Ya-Ping Li

“…In this work, we carry out a series of 2D global hydrodynamical simulations with Athena++ to explore the effect of thermodynamics on the concurrent accretion and migration processes of the planets in a self-consistent manner. …”
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Signatures of Core-envelope Rotational Misalignment in the Mixed-mode Asteroseismology of Kepler-56 by J. M. Joel Ong

“…However, tidal torques from misaligned companions, or their possible engulfment, may bring the rotational axis of a star's envelope out of alignment with its core, breaking azimuthal symmetry. …”
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Promise and Peril: Stellar Contamination and Strict Limits on the Atmosphere Composition of TRAPPIST-1 c from JWST NIRISS Transmission Spectra by Michael Radica, Caroline Piaulet-Ghorayeb, Jake Taylor, Louis-Philippe Coulombe, Björn Benneke, Loic Albert, Étienne Artigau, Nicolas B. Cowan, René Doyon, David Lafrenière, Alexandrine L’Heureux, Olivia Lim

“…Attempts to probe the atmospheres of rocky planets around M dwarfs present both promise and peril. …”
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Analysis and Optimization of Meshing Characteristic of Planetary Gear Train Considering Structure Flexibility by Guangze Zheng, Ya Mei, Jincai Yang

“…The dynamics analysis model of the AT planetary gear system is established and the contact spot experiment is carried out. Through the comparative analysis of the simulation and experimental contact spot results， it is concluded that the meshing spots of the small sun gear-short planet gear and the long planet gear-ring gear pair are basically the same and there is a significant partial load phenomenon. …”
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A New Resultant Vibration Acceleration Model of a Planetary Gear Train and Fault Response Analysis by Rui Meng, Xin Cai, Xingwen Guo

“…This signal includes a vertical component of the vibration along the meshing lines of both sun-planet and ring-planet pairs. Moreover, it also contains the vertical component of the planet gears, sun gear, and planet carrier acceleration relative to their own supporting bearings. …”
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Research of the Dynamic Load Sharing of Heavy Load Planetary Gear System with Multi- floating Component by Xu Xiangyang, 2Yang Wang, Diao Peng, Tao Youchuan

“…The experimental verification of load sharing situation of multi- floating component planetary gear system under the change of external load and planet carrier support stiffness is carried out on the load sharing test platform.…”
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