"Mvula ya Satellite" Yodabwitsa: Ma Satellite opitilira 500 a Starlink LEO Atayika ku Zochitika za Dzuwa

Chochitika: Kuchokera Kuwonongeka Kwaposachedwa Kukafika Mvula Yamvula

Kuwonongeka kwakukulu kwa ma satellite a LEO a Starlink sikunachitike mwadzidzidzi. Chiyambireni kukhazikitsidwa kwa pulogalamuyi mu 2019, zotayika za satellite zinali zochepa (2 mu 2020), mogwirizana ndi ziwopsezo zomwe zimayembekezeredwa. Komabe, 2021 idawona kukwera kwakukulu (kutayika 78), kutsatiridwa ndi milingo yokhazikika (99 mu 2022, 88 mu 2023). Vutoli lidafika pachimake mu 2024 pomwe ma satelayiti 316 adawotcha - ziwerengero zitatu zazaka zam'mbuyomu - zomwe zidatayika 583, zofanana ndi ~ satellite imodzi yomwe idatayika tsiku lililonse kapena 1 mwa 15 kulephera kumaliza ntchito yake.

Zochita za Dzuwa: Wolakwa Wosaoneka

Kafukufuku wa NASA amatsimikizira kulumikizana kwachindunji pakati pa satellite deorbiting ndi ma solar cycle. Kukhazikitsidwa kwa 2019 kudagwirizana ndi kuchepa kwa dzuwa, koma momwe dzuwa likuchulukirachulukira, kukoka kwamlengalenga pamtunda wa 340-550km kudakwera ndi> 50% panthawi yamphepo yamkuntho ya geomagnetic. Izi zimachitika pamene:

1. Kutentha kwadzuwa koyambitsidwa ndi dzuwa / ma coronal mass ejection akuphulitsa dziko lapansi
2. Mphepo yamkuntho ya Geomagnetic imatenthetsa ndikukulitsa mlengalenga
3. Kuchuluka kwa mpweya kumawonjezera kukokera, kumayambitsa kuwonongeka kwa orbital

Zodabwitsa: Mkuntho Zofooka Zikutsimikizira Kufa Kwambiri

Mosiyana ndi zoyembekeza, 70% ya zotayika zidachitika panthawi yamphepo yamkuntho yofooka ya geomagnetic. Zochitika zotalikirazi (masiku okhalitsa/masabata) pang'onopang'ono zimawononga mayendedwe opitilira kuchira, mosiyana ndi mphepo yamkuntho yamphamvu koma yachidule. Chitsanzo chodziwika bwino: Ma satellite 40 mwa 49 a Starlink omwe adakhazikitsidwa mu February 2022 adagonja ku mphepo yamkuntho yofooka.

Kusintha kwa Low-Orbit Tradeoffs

Pomwe ma orbit a Starlink a 550km amathandizira kulumikizana kocheperako, kuyandikira kwawo ku Earth:

1. Imaletsa moyo wogwirira ntchito mpaka ~ zaka 5 (vs. ISS's 400km orbit)
2. Imakulitsa kukoka kwamphamvu panthawi ya solar maxima
3. Makamaka amayesa ma satellite pamalo okwera 210km

Mavuto Amtsogolo

Ndi>> 6,000 Starlink ma satellites omwe akuzungulira nthawi yadzuwa - mgwirizano wodziwika bwino - asayansi akuchenjeza za:

1. Kuthamanga kwa satellite
2. Kutha kwa ozone kuchokera ku mpweya wa aluminium oxide panthawi yoloweranso SpaceX kumachepetsa kutayika kudzera pakukhazikitsanso mwachangu komanso ma protocol a deorbit, koma kulimba kwa dzuŵa kumakhalabe kofunika kwambiri pamakampani.

Mapeto

Chochitikachi chikugogomezera mphamvu za chilengedwe paukadaulo wa anthu ndikuwunikiranso kufunikira kwa mapangidwe a LEO omwe amatengera mphamvu zoyendera dzuwa.

Chengdu Concept Microwave Technology CO., Ltd ndi katswiri wopanga zida za 5G/6G RF zolumikizirana ndi satellite ku China, kuphatikiza fyuluta ya RF lowpass, fyuluta ya highpass, fyuluta ya bandpass, fyuluta ya notch/band stop, duplexer, Power divider ndi coupler yolunjika. Zonsezi zitha kusinthidwa malinga ndi zomwe mukufuna.

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