外文翻译-航天器轨道机动研究

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1、毕业论文英文翻译专业名称学生姓名学号班号指导老师英文原文:ThespacecraftorbitmaneuverWiththedevelopmentofspacetechnology,powerthatspacecraftsrequireisincreasing.Searchingforsolararrayoflargerpower,higherreliability,longerlife-spanandlowercostisalwaysoneoftheurgentrequirements.Inrecentyears,ourc

2、ountryisengagedindevelopingsatellitesoflargepowerfornavigationandcommunication,withtheproblemofhowtoimproveperformancesofthepowersystemonboard.Solarpaneliswidelyusedtoprovideenergyforsatellites.Orientationandsuntrackingmethodsofsolarpanelofsatellitesindifferentorbi

3、tswerediscussedinthisthesis,infavorofpowersystemdesignation.Open-closedloopcontrollingwasoftenusedforsuntrackingofsolarpanelofsatellitesinsunsynchronousorbits,whichkeepsdrivingsolarpanelinacertainconstantspeed.Theinfluenceofsunmovementanddragofatmosphereonthetracki

4、ngerrorwasanalyzed,andacorrespondingsuntrackingmethodisderived.Yawmotionisasignificantsuntrackingmethodforsatellitesinageneralinclinedorbitwithsolarpanelswithsingledegreeoffreedom.Ausefulschemewhichreplacedtheidealyawangleprofilebyasquarewavehasagreatadvantageforce

5、rtainapplications.Theyawangleisthusmaintainedconstantforlargepartsoftheorbit.Ananalyticalformulaoftheconstantoptimalyawangleasafunctionoftheanglebetweenthesunandtheorbitwasderivedthroughpolynomialcurvefittingwithoutincurringmorepowerloss.Fixedsolarpanelcanbeusedins

6、atelliteswithlowpower,shortlifespanandspecialapplication.Amethodforfiguringoutfixedsolararray'soptimalorientationisproposedinthispaperforsatellitesinellipticorbits,sothatamaximumenergycanbeprovidedtothesatellite.Atheoremisproved,thatis,theoptimalorientationisinthed

7、irectionofthecentroidoftheupperportionofthesuntrackcirqueinthecelestialsphere.Withthetheorem,theoptimalorientationcanbeapproximatedbyiterativelylocatingthecorrespondingcentroid.Thismethodissuitableforsatellitesinorbitsofdifferenteccentricities.Numericalsimulationsh

8、avedemonstratedtheeffectivenessoftheapproachproposed.Orbitalmaneuverisreferstothespacecraft,theinitiativetochangetheorbit.Herepointedoutthattheth