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Ground-based and additional science support for SMILE

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Earth and Planetary Physics 2024年第1期8卷 275-298页

作者： J.A.Carter M.Dunlop C.Forsyth K.Oksavik E.Donovon A.Kavanagh S.E.Milan T.Sergienko R.C.Fear D.G.Sibeck M.Connors T.Yeoman X.Tan M.G.G.T.Taylor K.McWilliams J.Gjerloev R.Barnes D.D.Billet G.Chisham A.Dimmock M.P.Freeman D.-S.Han M.D.Hartinger S.-Y.W.Hsieh Z.-J.Hu M.K.James L.Juusola K.Kauristie E.A.Kronberg M.Lester J.Manuel J.Matzka I.McCrea Y.Miyoshi J.Rae L.Ren F.Sigernes E.Spanswick K.Sterne A.Steuwer T.Sun M.-T.Walach B.Walsh C.Wang J.Weygand J.Wild J.Yan J.Zhang Q.-H.Zhang Planetary Sciences Group School of Physics and AstronomyUniversity of LeicesterUniversity RoadLeicesterLE17RHUK Rutherford Appleton Laboratory space Science Technology Facilities CouncilOxfordshireUK School of space and Environment Beihang UniversityBeijing 100191China Key Laboratory of space Environment Monitoring and Information Processing Ministry of Industry and Information TechnologyBeijing 100017China Department of space and Climate Physics UCLMullard Space Science LaboratoryHolmbury St.MaryDorkingSurreyRH56NTUK Birkeland centre for space Science Department of Physics and Technology.University of BergenBergenNorway Department of Physics and Astronomy University of Calgary2500 University DriveCalgaryAlbertaCanada T2N 1N4 British Antarctic Survey CambridgeUK Swedish Institute of space Physics KirunaSweden West Highfield Campus University of SouthamptonUniversity RoadSO171BJUK Goddard space Flight Center NASAGreenbeltMarylandUSA Athabasca University AthabascaCanada ESTEC European Space AgencyNetherlands University of Saskatchewan SaskatoonCanada The Johns Hopkins University Applied Physics Laboratory LaurelMarylandUSA Swedish Institude of space Physics UppsalaSE 75121Sweden Tongji University Shanghai 200092China Center for space Plasma Physics Space Science Institute4765 Walnut Street Suite BBoulderColorado80301USA Polar Research Institute of China Shanghai 200136China Finnish Meteorological Institute(FMI) Finland Department of Earth and Environmental Sciences(Geophysics) Ludwig Maximilian University of Munich(LMU)MunichTheresienstr.41MunichD-80333Germany Canadian space Agency MontrealCanada GFZ German Research centre for Geosciences PotsdamGermany Nagoya University Institute for Space Earth Environment ResearchCenter for Integrated Data ScienceNagoyaAichiJP 464-8601 Northumbria University Newcastle upon TyneTyne and WearUK NE18ST National space Science Center Chinese Academy SciencesBeijing 100190China Arctic Geophysics University Centre in Svalbard

The joint European space Agency and Chinese Academy of Sciences Solar wind Magnetosphere Ionosphere Link Explorer(SMILE)mission will explore global dynamics of the magnetosphere under varying solar wind and interplanetary magnetic field conditions,and simultaneously monitor the auroral response of the Northern Hemisphere *** these large-scale responses with medium and fine-scale measurements at a variety of cadences by additional ground-based and space-based instruments will enable a much greater scientific impact beyond the original goals of the SMILE ***,we describe current community efforts to prepare for SMILE,and the benefits and context various experiments that have explicitly expressed support for SMILE can offer.A dedicated group of international scientists representing many different experiment types and geographical locations,the Ground-based and Additional Science Working Group,is facilitating these *** include constructing an online SMILE Data Fusion Facility,the discussion of particular or special modes for experiments such as coherent and incoherent scatter radar,and the consideration of particular observing strategies and spacecraft *** anticipate growing interest and community engagement with the SMILE mission,and we welcome novel ideas and insights from the solar-terrestrial community.

关键词： magnetosphere ionosphere magnetosphere-ionosphere coupling ground-based experimentation SMILE conjunctions missions

Covariance analysis of periodic and quasi-periodic orbits around Phobos with applications to the Martian Moons eXploration mission

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Astrodynamics 2023年第3期7卷 363-379页

作者： Edoardo Ciccarelli Nicola Baresi surrey space centre University of SurreyGU27XHGuildfordUK

Understanding the internal composition of a celestial body is fundamental for formulating theories regarding its *** knowledge of the distribution of mass under the body’s crust can be achieved by analyzing its moments of inertia and gravity *** this regard,the two moons of the Martian system have not yet been closely studied and continue to pose questions regarding their origin to the space community;thus,they deserve further *** Martian Moons eXploration mission will be the first of its kind to sample and study Phobos over a prolonged *** study aims to demonstrate that the adoption of periodic and quasi-periodic retrograde trajectories would be beneficial for the scientific value of the ***,a covariance analysis was implemented to compare the estimation of high-order gravitational field coefficients from different orbital geometries and for different sets of processed *** was shown that the adoption of low-altitude non-planar quasi-satellite orbits would help to refine the knowledge of the moon’s libration angle and gravitational field.

关键词： covariance analysis Martian system geodetic navigation Martian Moons eXploration(MMX) Phobos

Intelligent Fuzzy Control in Stabilizing Solar Sail with Individually Controllable Elements

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space(Science & Technology) 2022年第1期2022卷 274-285页

作者： Lin Chen Xiaoyu Fu Santos Ramil Ming Xu Beihang University 100191 BeijingChina surrey space centre The University of SurreyGU27XH GuildfordUK

Fuzzy logical control is a robust and effective control method in industrial fields,which renders it applicable to the attitude control of a solar ***,it is hard to apply in black-box and time-varying problem as real solar sail attitude *** the lack of a priori knowledge and the unacceptable manual workload in the design of the fuzzy logical controller(FLC),an intelligent FLC designer(IFLCD)is developed by introducing neural network modelling and automatic design ***,IFLCD also supports self-adaption for better control *** applying the proposed IFLCD in the attitude stabilization of a solar sail with individually controllable elements(SSICE),an effective solution of unmanned,time-varying,and complex system control method is offered without any mathematical model,which also overcomes the difficulties in FLC design Considering the performance degradation,accident,and distance problems faced by spacecraft,IFLCD can help with more practical problems that are hard be solved by traditional control theory.

关键词： theory. overcome apply

Comments on “Sidewinding with Minimal Slip: Snake and Robot Ascent of Sandy Slopes”

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机器人 2015年第2期37卷 254-256页

作者： LIU Jinguo GAO Yang WANG Yuechao MA Shugen LUO Yifan State Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences STAR Lab Surrey Space Centre University of Surrey Department of Robotics College of Science and Engineering Ritsumeikan University

Marvi et al(Science,2014,vol.346,p.224)concluded a sidewinder rattlesnake increases the body contact length with the sand when granular incline angle *** also claimed the same principle should work on robotic snake *** have evidence to prove that this conclusion is only partial in describing the snake body-sand *** should be three phases that fully represent the snake locomotion behaviors during ascent of sandy slopes,namely lifting,descending,and *** snake body-sand interaction during the descending and ceasing phases helps with the climbing while such interaction during the lifting phase in fact contributes resistance.

关键词：机器人设计工业机器人应用

Low-carbon design towards sustainable city development:Integrating glass space with natural greenery

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Science China(Technological Sciences) 2024年第9期67卷 2659-2674页

作者： CAO Shi-Jie ZHANG CunKuan WANG JunQi FENG ZhuangBo CHEN Gang HAGHIGHAT Fariborz School of Architecture Southeast UniversityNanjing 210096China Jiangsu Province Engineering Research Center of Urban Heat and Pollution Control Southeast UniversityNanjing 210096China Global centre for Clean Air Research Department of Civil and Environmental EngineeringFaculty of Engineering and Physical SciencesUniversity of SurreyGuildfordGU27XHUnited Kingdom The Third Construction Co. Ltd.of China Construction Eighth Engineering DivisionNanjing 210046China Energy and Environment Group Department of BuildingCivil and Environmental EngineeringConcordia UniversityMontrealH3G 1M8Canada

The rapid urban development has caused serious problems such as high energy consumption and carbon emissions,especially under the context of climate *** are particularly energy-intensive,generating about one third of global energyrelated carbon *** with active solutions(like mechanical systems),passive solutions offer the potential to balance energy consumption,thermal comfort,and ecological *** potential solution is the integration of green glass space(GGS)into passive building *** is a transitional building space with glass curtain walls that exhibit excellent insulation performance during ***,GGS is susceptible to overheating during summer,which limits its ***,this work proposes a strategy of integrating vertical greenery into GGS,leveraging the nature-based solution of greenery(i.e.,flourishes in summer and withers in winter)to address this seasonal challenge of *** results demonstrated that the strategic application of vertical greenery can effectively mitigate the overheating in GGS and improve comprehensive *** using full coverage of vertical greenery in a linear layout,the air temperature of GGS and cooling energy consumption were largely reduced by 8.02℃and 12.2%,respectively,while the carbon abatement was enhanced by up to 101.11 *** on a comprehensive evaluation of energy,economy,and environmental benefits,it is recommended to use a greenery configuration with 50%coverage in a vertical linear layout for *** integration of greenery into building design can mitigate adverse environmental impacts,reduce energy consumption,and contribute to the sustainable development of low-carbon cities.

关键词： low-carbon design green glass space vertical greenery greenery configuration carbon abatement

A Magnetically Levitated Precise Pointing Mechanism for Application to Optical Communication Terminals

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Optics and Photonics Journal 2012年第2期2卷 85-97页

作者： Thomas Edward Donaldson Frame Alexandre Alexandre Pechev surrey space centre University of Surrey Guildford UK

Increasing data bandwidth requirements from spacecraft systems is beginning to pressure existing microwave communications systems. Free-space optical communications allows for larger bandwidths for lower relative power consumption, smaller size and weight when compared to the microwave equivalent. However optical communication does have a formidable challenge that needs to be overcome before the advantages of the technology can be fully utilized. In order for the communication to be successful the transmitter and receiver terminals need to be pointed with a high accuracy (generally in the order of ≤10 μradians) for the duration of communication. In this paper we present a new concept for the precise pointing of optical communications terminals (termed the Precise Pointing Mechanism). In this new concept we combine the separate pointing mechanisms of a conventional optical terminal into a single mechanism, reducing the complexity and cost of the optical bench. This is achieved by electromagnetically actuating the whole telescope assembly in 6 degrees-of-freedom with an angular resolution of less than ±3 μradians within a 10 (Az. El.) field of view and linear resolution of ±2 μm. This paper presents the new pointing mechanism and discusses the modelling, simulation and experimental work undertaken using the bespoke engineering model developed.

关键词： Optical Communications Magnetic Levitation Control Pointing Active Anti-Vibration

Design of mesoporous ZnCoSiOx hollow nanoreactors with specific spatial distribution of metal species for selective CO_(2)hydrogenation

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Nano Research 2023年第4期16卷 5601-5609页

作者： Xinyao Wang Runping Ye Melis S.Duyar Cameron Alexander Hurd Price Hao Tian Yanping Chen Na Ta Hao Liu Jian Liu State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China University of Chinese Academy of Sciences Beijing 100049China Department of Chemical and Process Engineering University of SurreyGuildfordSurrey GU27XHUK Department of Chemical Engineering and Analytical Science University of ManchesterManchesterUK centre for Clean Energy Technology University of Technology SydneySydneyBroadway NSW 2007Australia DICP-surrey Joint centre for Future Materials Advanced Technology InstituteUniversity of SurreyGuildfordSurrey GU27XHUK

In heterogeneous catalysis,the precise placement of active components to perform unique functions in cooperation with each other is a tremendous *** migration of matter on micro/nano-scale caused by diffusion is a promising pathway for design of catalytic nanoreactors with precise active sites location and controllable microenvironment through compartmentalization and confinement ***,we report two categories of mesoporous ZnCoSiOx hollow nanoreactors with different metal distributions and microenvironment engineered by the diffusion behavior of metal species in confined ***-shelled hollow structures with well-distributed metal species were obtained by adopting core@shell structured ZnCo-zeolitic imidazolate framework(ZIF)@SiO2 as a template and employing three stages of hydrothermal treatment including the decomposition of ZIF,diffusion of metal species into the silica shell,and Ostwald ***,the formation of yolk@shell structure with a collective(Zn-Co)metal oxide as the yolk was achieved by direct pyrolysis of ZnCo-ZIF@*** CO_(2)hydrogenation,ZnCoSiOx with double-shelled hollow structures and yolk@shell structures respectively afford CO and CH_(4)as main product,which is related with different dispersion and location of active sites in the two *** study provides an efficient method for the synthesis of catalytic nanoreactors on the basis of insights of the atomic diffusion in confined space at the mesoscale.

关键词： mesoporous materials structure-activity relationships supported catalysts metal-organic frameworks nanostructures

Magnetic interaction in ultra-compact binary systems

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Research in Astronomy and Astrophysics 2009年第7期9卷 725-744页

作者： Kinwah Wu Mullard space Science Laboratory University College London Holmbury St. Mary Surrey RH5 6NT United Kingdom

This article reviews the current works on ultra-compact double-degenerate binaries in the presence of magnetic interaction, in particular, unipolar induction. The orbital dynamics and evolution of compact white-dwarf pairs are discussed in detail. Models and predictions of electron cyclotron masers from unipolar-inductor compact binaries and unipolar-inductor white-dwarf planetary systems are presented. Einstein-Laub effects in compact binaries are briefly discussed.

关键词： stars binaries close - stars white dwarfs - gravitational waves - masers - radio continuum stars - X-rays binaries -- planetary systems

Ground and flight tests of AlSat-1B butane propulsion system

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Propulsion and Power Research 2022年第1期11卷 74-84页

作者： D.Darfilala D.Gibbon Satellite Development Center CDS Algerian Space Agency ASALBP 4065Ibn Rochd USTOOran31130Algeria surrey Satellite Technology Ltd. GuildfordSurrey GU27YEUnited Kingdom

On September 26,2016 Algerian space Agency launched AlSat-1B,the second in a series of medium resolution earth observation satellites ***-1B electro-thermal propulsion system follows the classic design principle that has been used on previous SSTL-100 *** a total dry weight of 5.17 kg,the system is filled with 2.35 L selfpressurized *** thruster assembly is designed to use 15 W(at 28 V)redundant heater elements,it is designed to have an average mission thrust of 50 *** a warm up time of 10 min,the temperature of the butane will be increased by over 250℃.This is the equivalent of about 35%gain in specific impulse over ambient temperature *** spacecraft dry weigh at launch site was 107 kg,the propulsion system is designed to provide at least 19 m/s Delta-v to meet the spacecraft’s mission *** investigate the system readiness for flight,a series of performance tests have been completed at the surrey Satellite Technology Ltd laboratories(United Kingdom),Satellite Development centre(Algeria)and Satish Dhawan space centre rocket launch site(India),the results of these tests as well as initial flight test results are presented in this paper.

关键词： space Propulsion Butane Resistojet Heaters Specific impulse