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NUTATION: 作品数：25被引量：52H指数：4; 导出分析报告; 相关领域：天文地球更多>>; 相关作者：王海东郑进方梁力建更多>>; 相关机构：海南省人民医院中山医科大学附属第一医院更多>>; 相关期刊：《Chinese Physics Letters》《Chinese Optics Letters》《Science Bulletin》《World Journal of Mechanics》更多>>; 相关基金：国家自然科学基金更多>>

Remarks about External Forces Acting on Earth’s Rotation Axis: 《World Journal of Mechanics》2023年第2期73-77,共5页Monica Zoe Ciobanu; It is well known that a variation in the direction of Earth’s rotation axis is a real astronomical phenomenon, named nutation. It is interesting if a variation of this axis can take place only in intensity, in the si...; 关键词：NUTATION Variation in Intensity of Earth’s Rotation Axis Chandler’s Wobble

Analysis of the nutation and precession of the vortex core and the influence of operating parameters in a cyclone separator被引量：2: 《Chinese Journal of Chemical Engineering》2022年第6期1-10,共10页Pan Zhang Guanghui Chen Weiwen Wang Guodong Zhang Huaming Wang; Authors thank for the joint funding of a Key Research and Development Plan of Shandong Province(Public Science and Technology)(2019GSF109038);the Key Laboratory of Multiphase Flow Reaction and Separation Engineering of Shandong Province(2019MFRSE-A01);the National Natural Science Foundation of China(51809236).; Vortices motion in the anisotropic turbulent flow of cyclones makes a vital impact on flow stability and collection performance.Nevertheless,there remains a lack of clarity in the overall feature of vortices motion.In...; 关键词：Cyclone separator Precession vortex core Nutation motion Separation efficiency Numerical simulation Fluid mechanics

Experimental model for the description of the behaviour of a 9-mm projectile at a target: 《Forensic Sciences Research》2021年第1期67-74,共8页Patricia Morales-Vega Daniel Esteban Jaramillo-Arango Jaime Alberto Osorio-Velez David Norena-Blandon; Analysis of crime scenes involving single-fire-gun projectiles requires the determination of the direction of arrival of a projectile at the target and other factors to reconstruct events.The movement of a projectile ...; 关键词：Forensic sciences forensic ballistics FIREARM gyroscopic motion Euler equations NUTATION PRECESSION projectile motion

Improvement of Orbit Prediction Algorithm for Spacecraft Through Simplified Precession-Nutation Model Using Cubic Spline Interpolation Method被引量：1: 《Computer Modeling in Engineering & Sciences》2020年第11期865-878,共14页Gen Xu Danhe Chen Xiang Zhang Wenhe Liao; The authors would like to express gratitude for supporting funding from the Natural Science Foundation of China(No.51905272).; For the on-orbit flight missions,the model of orbit prediction is critical for the tasks with high accuracy requirement and limited computing resources of spacecraft.The precession-nutation model,as the main part of e...; 关键词：Orbit prediction CIP-based coordinate transformation cubic spline interpolation

Analysis of detection error for spot position in fiber nutation model: 《Chinese Optics Letters》2020年第2期15-19,共5页Xueqiang Zhao Yunpeng Zhang Minjie Huang Peipei Hou Ren Zhu Jianfeng Sun Xia Hou Weibiao Chen; The influences of nutation trail accuracy,simplification of coupling model,spot position jitter,and power variation of incident light on the detection error are analyzed theoretically.Under the condition of satisfying...; 关键词：FIBER NUTATION detection ERROR TRACKING system

The effect of the differential rotation of the earth inner core on the free core nutation: 《Geodesy and Geodynamics》2019年第2期146-149,共4页Mian Zhang Chengli Huang; supported by the National Natural Science Foundation of China (11373058/11773058/10903023/11133004);the CAS Key Lab of Planetary Science; Seismic observations shows that the inner core rotates faster than the mantle and the rotation axis of the inner core may not align with the rotation axis of the mantle. Free core nutation reflects core's information....; 关键词：INNER CORE DIFFERENTIAL ROTATION Free CORE NUTATION

Understanding the effects of the core on the nutation of the Earth: 《Geodesy and Geodynamics》2017年第6期389-395,共7页Véronique Dehant Raphael Laguerre Jérémy Rekier Attilio Rivoldini Santiago Andres Triana Antony Trinh Tim Van Hoolst Ping Zhu; funding from the European Research Council under ERC Advanced Grant 670874; In this review paper, we examine the changes in the Earth orientation in space and focus on the nutation（shorter-term periodic variations）, which is superimposed on precession（long-term trend on a timescale of year...; 关键词：Precession Nutation Core

Basic Earth＇s Parameters as estimated from VLBI observations被引量：2: 《Geodesy and Geodynamics》2017年第6期427-432,共6页Ping Zhu Attilio Rivoldini Laurence Koot Véronique Dehant; funding from the European Research Council Advanced Grant:RotaNut,Project ID:670874; The global Very Long Baseline Interferometry observation for measuring the Earth rotation＇s parameters was launched around 1970 s. Since then the precision of the measurements is continuously improving by taking into...; 关键词：Nutation model Nutation series VLBI BEPs

Dynamic performance of a C/C composite finger seal in a tilting mode被引量：7: 《Chinese Journal of Aeronautics》2017年第4期1603-1614,共12页Hailin ZHAO Guoding CHEN Li'na WANG Hua SU Fei LU; co-supported by the National Natural Science Foundation of China (No. 51575445);the Natural Science Foundation of Shaanxi Province of China (No. 2014JM7266); The complex operating state of aeroengines has an impact on the performance of finger seals. However, little work has been focused on the issue and the dynamic performance of finger seals is also rarely studied. There...; 关键词：Aero-engine C/C composite Dynamic performance Finger seal Nutation tilt Precession tilt

Nutation instability of spinning solid rocket motor spacecraft被引量：3: 《Chinese Journal of Aeronautics》2017年第4期1363-1372,共10页Dan YANG Yongliang XIONG Qian REN Xianyong WANG; supported by the National Natural Science Foundation of China (Nos. 11502086 and 11502087); The variation of mass, and moment of inertia of a spin-stabilized spacecraft leads to concern about the nutation instability. Here a careful analysis on the nutation instability is performed on a spacecraft propelled ...; 关键词：Attitude control Nutation dampers Payloads Solid rocket booster Spin stabilization of spacecraft

NUTATION