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中國超級望遠鏡“神經系統”成型

來源: 南方日報網絡版     時間: 2019年06月26日 20:20:43
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(中)(科)(院)(國)(家)(天)(文)(臺)(500米)(口)(徑)(球)(面)(射)(電)(望)(遠)(鏡)(項)(目)(綜)(合)(布)(線)(工)(程)(完)(成)(
  9月)(30日)(,隨)(著)(長)(度)(3.5千)(米)(的)(10千)(伏)(高)(壓)(線)(纜)(通)(過)(耐)(壓)(測)(試)(、變)(電)(站)(設)(備)(調)(試)(完)(成)(,中)(科)(院)(國)(家)(天)(文)(臺)(500米)(口)(徑)(球)(面)(射)(電)(望)(遠)(鏡)((簡)(稱)(FAST)項)(目)(綜)(合)(布)(線)(工)(程)(完)(成)(,具)(備)(供)(電)(條)(件)(,這)(標)(志)(著)(“天)(眼)(”的)(神)(經)(系)(統)(已)(經)(成)(型)(,FAST工)(程)(進)(入)(最)(后)(的)(沖)(刺)(階)(段)(。
  該)(項)(目)(的)(綜)(合)(布)(線)(工)(程)(由)(中)(建)(二)(局)(安)(裝)(工)(程)(有)(限)(公)(司)(承)(建)(,主)(要)(包)(括)(內)(網)(高)(低)(壓)(配)(電)(、測)(控)(網)(絡)(及)(安)(防)(工)(程)(等)(,共)(在)(46萬)(平)(方)(米)(的)(作)(業)(面)(上)(鋪)(設)(各)(類)(線)(路)(450千)(米)(,設)(置)(核)(心)(節)(點)(及)(分)(支)(節)(點)(控)(制)(箱)(2226個)(,為)(“天)(眼)(”打)(造)(了)(“神)(經)(”和)(“血)(管)(”系)(統)(。
  FAST建)(于)(貴)(州)(省)(黔)(南)(平)(塘)(縣)(的)(大)(窩)(凼)(,為)(國)(家)(重)(大)(科)(學)(工)(程)(,比)(目)(前)(世)(界)(上)(最)(大)(的)(美)(國)(阿)(雷)(西)(博)(天)(文)(望)(遠)(鏡)(觀)(測)(面)(積)(大)(幅)(增)(加)(,靈)(敏)(度)(提)(高)(了)(2.25倍)(。
  中)(科)(院)(國)(家)(天)(文)(臺)(射)(電)(部)(首)(席)(科)(學)(家)(李)(Q_)((音)(同)(第)()表)(示)(,FAST是)(世)(界)(上)(正)(在)(建)(造)(的)(口)(徑)(最)(大)(、最)(具)(威)(力)(的)(單)(天)(線)(射)(電)(望)(遠)(鏡)(,接)(收)(面)(積)(約)(等)(于)(30個)(足)(球)(場)(的)(面)(積)(。待)(建)(成)(后)(,FAST將)(在)(未)(來)(20年)(內)(保)(持)(世)(界)(一)(流)(地)(位)(。
  FAST的)(主)(要)(目)(標)(是)(探)(測)(宇)(宙)(中)(的)(遙)(遠)(信)(號)(和)(物)(質)(,在)(開)(展)(從)(宇)(宙)(起)(源)(到)(星)(際)(物)(質)(結)(構)(的)(探)(討)(、對)(暗)(弱)(脈)(沖)(星)(及)(其)(他)(暗)(弱)(射)(電)(源)(的)(搜)(索)(、高)(效)(率)(開)(展)(對)(地)(外)(理)(性)(生)(命)(的)(搜)(索)(等)(方)(面)(實)(現)(科)(學)(和)(技)(術)(的)(重)(大)(突)(破)(。
  索)(網)(結)(構)(是)(FAST主)(動)(反)(射)(面)(的)(主)(要)(支)(撐)(結)(構)(。據)(了)(解)(,FAST索)(網)(制)(造)(和)(安)(裝)(工)(程)(已)(于)(2月)(4日)(順)(利)(完)(成)(,這)(是)(世)(界)(上)(跨)(度)(最)(大)(、精)(度)(最)(高)(的)(索)(網)(結)(構)(,也)(是)(世)(界)(上)(第)(一)(個)(采)(用)(變)(位)(工)(作)(方)(式)(的)(索)(網)(體)(系)(。
  此)(間)(專)(家)(介)(紹)(,FAST索)(網)(結)(構)(直)(徑)(500米)(,整)(個)(索)(網)(共)(有)(6670根)(主)(索)(,攻)(克)(了)(超)(大)(跨)(度)(索)(網)(安)(裝)(方)(案)(設)(計)(、超)(高)(疲)(勞)(性)(能)(鋼)(索)(結)(構)(研)(制)(、超)(高)(精)(度)(索)(結)(構)(制)(造)(工)(藝)(等)(,形)(成)(了)(12項)(自)(主)(創)(新)(性)(的)(專)(利)(成)(果)(。
  FAST的)(最)(大)(特)(點)(是)(索)(網)(結)(構)(可)(隨)(天)(體)(的)(移)(動)(自)(動)(變)(化)(,帶)(動)(索)(網)(上)(活)(動)(的)(4450個)(反)(射)(面)(板)(產)(生)(變)(化)(。反)(射)(面)(單)(元)(加)(工)(與)(拼)(裝)(、饋)(源)(艙)(及)(艙)(停)(靠)(平)(臺)(的)(研)(制)(工)(作)(由)(中)(國)(電)(子)(科)(技)(集)(團)(公)(司)(承)(包)(。
  中)(國)(電)(科)(面)(板)(單)(元)(技)(術)(負)(責)(人)(鄭)(元)(鵬)(透)(露)(,反)(射)(面)(單)(元)(為)(三)(角)(形)(,根)(據)(所)(處)(的)(位)(置)(不)(同)(,其)(幾)(何)(尺)(寸)(、傾)(斜)(角)(度)(、支)(承)(點)(位)(置)(、荷)(載)(大)(小)(和)(方)(向)(等)(都)(不)(相)(同)(,“4450個)(邊)(長)(在)(10.2米)(至)(12.4米)(之)(間)(的)(反)(射)(面)(單)(元)(種)(類)(就)(近)(400種)(”。
  鄭)(元)(鵬)(表)(示)(,他)(們)(將)(根)(據)(索)(網)(節)(點)(坐)(標)(數)(據)(以)(及)(單)(元)(的)(安)(裝)(尺)(寸)(要)(求)(,采)(用)(參)(數)(化)(設)(計)(方)(法)(,將)(子)(單)(元)(的)(表)(面)(精)(度)(控)(制)(在)(1毫)(米)(以)(上)(,“讓)(每)(一)(個)(反)(射)(面)(都)(可)(以)(進)(行)(對)(焦)(,FAST與)(號)(稱)(地)(面)(最)(大)(機)(器)(的)(德)(國)(波)(恩)(100米)(望)(遠)(鏡)(相)(比)(,靈)(敏)(度)(提)(高)(約)(10倍)(”。
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