Iṣẹ apinfunni PROBA-3 ti ESA, eyiti o gbe soke lori rokẹti ISRO's PSLV-XL ni ọjọ 5 Oṣu kejila ọdun 2024, jẹ “Ṣiṣe oṣupa oorun” idasile satẹlaiti meji ti occulter ati awọn ọkọ oju-ofurufu coronagraph. Yoo jẹ ki akiyesi oorun corona nipasẹ ọkọ ofurufu coronagraph fun awọn wakati 6 ni gbogbo wakati 19 wakati 36 iṣẹju yipo nipasẹ ẹda ibeere ti oṣupa oorun lapapọ nipasẹ ọkọ ofurufu occulter ti dida. Gẹgẹbi ifihan ti awọn imọ-ẹrọ ti o fò idasile, iṣẹ apinfunni PROBA-3 pa ọna fun iṣẹ-ṣiṣe LISA ti o da lori interferometry iwaju (eyiti yoo jẹ dida awọn ọkọ oju-ọrun mẹta ni aaye) fun wiwa awọn igbi walẹ igbohunsafẹfẹ kekere (GWs).
Iṣẹ apinfunni Laser Interferometer Space Antenna (LISA) eyiti o gba ESA's lọ siwaju ni kutukutu ọdun yii ati pe o ti ṣe ifilọlẹ ni ọdun 2035, yoo jẹ akiyesi oju-aye akọkọ ti aaye walẹ ti a ṣe igbẹhin si wiwa ati iwadii awọn igbi walẹ igbohunsafẹfẹ kekere (GWs) pẹlu igbohunsafẹfẹ laarin 0.1 mHz ati 1 Hz (tabi awọn ripples millihertz) ti o ṣẹlẹ nipasẹ awọn ipalọlọ ninu aṣọ ti akoko aaye kọja agbaye. Yoo jẹ irawọ ti awọn ọkọ oju-ofurufu mẹta ni dida igun onigun mẹta deede ni aaye. Ẹgbẹ kọọkan ti onigun mẹta yoo jẹ 2.5 milionu km gigun. Ipilẹṣẹ ti awọn ọkọ oju-ofurufu mẹta yoo yipo Sun ni oju-ọrun heliocentric ti Earth-trailing laarin 50 ati 65 milionu km lati Earth lakoko ti o n ṣetọju ijinna iyapa laarin awọn ọkọ ofurufu ti 2.5 milionu km.
Iṣẹ apinfunni LISA yoo kọ lori awọn agbara bọtini meji - “iwadi igbi walẹ-igbohunsafẹfẹ ni aaye” ati “Ipilẹṣẹ pipe ti n fo ni aaye”. Lakoko ti imọ-ẹrọ ti o nilo fun “iwari igbi walẹ-kekere ni aaye” ni idanwo ni ọkọ ofurufu ati ṣafihan nipasẹ iṣẹ apinfunni LISA Pathfinder lakoko ọdun 2015-2017, imọ-ẹrọ fun “ipilẹṣẹ pipe ti n fo ni aaye” ti ṣafihan laipẹ ni 5 Oṣu kejila ọdun 2024 pẹlu awọn "lapapọ oorun ati oṣupa-ṣiṣe meji satẹlaiti Ibiyi ti PROBA-3 ise" titẹ gíga elliptical orbit. O ti gbe soke lori apata ISRO's PSLV-XL.
PROBA (Ise agbese fun On-Board Autonomy) -3 iṣẹ apinfunni ti European Space Agency (ESA) ni awọn ibi-afẹde bọtini meji: iṣafihan ti iṣelọpọ awọn imọ-ẹrọ ti n fo, ati ikẹkọ ti corona oorun inu.
PROBA-3 ni akọkọ lailai "konge Ibiyi flying" ise. O ti wa ni a Ibiyi ti meji spacecrafts: occulter ati awọn coronagraph. Ti iṣaaju (ie, Ọkọ ofurufu Occulter) sọ ojiji ti iṣakoso ni deede sori ọkọ ofurufu Coronagraph lati ṣe agbejade awọn oṣupa lapapọ lapapọ lori ibeere fun wakati mẹfa ni akoko kan, ti n jẹ ki akiyesi akiyesi oorun oorun ti o rẹwẹsi pupọ. Awọn ọkọ oju-ofurufu meji ti o wa ni idasile jẹ iyatọ nipasẹ ijinna ti awọn mita 150 pẹlu deede ti awọn milimita meji kan. Ipilẹṣẹ ti o peye ga julọ ti awọn iwọn adase ni aaye jẹ ilọsiwaju pataki ni imọ-ẹrọ aaye ti o ṣii iṣeeṣe ti awọn iṣẹ apinfunni tuntun gẹgẹbi iṣẹ apinfunni LISA ti o da lori interferometry fun wiwa awọn igbi walẹ igbohunsafẹfẹ kekere (GWs) ni aaye eyiti ko le rii ni lilo awọn aṣawari orisun ilẹ gẹgẹbi LIGO, VIRGO, ati be be lo tabi Pulsar Timing Arrays (PTAs).
Lakoko ti dida awọn ọkọ oju-ofurufu mẹta ni iṣẹ apinfunni LISA yoo jẹki wiwọn (nipasẹ interferometry laser) ti awọn ayipada kekere pupọ ni awọn aaye laarin awọn ọpọ eniyan idanwo ni awọn ọkọ oju-ọrun ti o fa nipasẹ awọn ripples gravitational, dida awọn ọkọ oju-ofurufu meji ni iṣẹ apinfunni PROBA -3 jẹ apẹrẹ lati jẹ ki akiyesi ti korona oorun nipasẹ ọkọ ofurufu coronagraph fun awọn wakati 6 ni gbogbo wakati 19h 36 iṣẹju XNUMX yipo nipasẹ ibeere ẹda ti oṣupa oorun lapapọ nipasẹ occulter spacecraft ti Ibiyi.
Awọn iṣẹlẹ oṣupa lapapọ lapapọ ko pese awọn aye ti o to lati ṣe akiyesi oju-aye ode ti oorun nitorinaa lori anfani eletan ti a pese nipasẹ PROBA-3 yoo jẹ iranlọwọ pupọ ni ikẹkọ ti oorun corona ati awọn iṣẹlẹ ti o ni ibatan fun asọtẹlẹ to dara julọ ti oju ojo aaye ati awọn iji oorun eyiti a mọ si disrupts satẹlaiti, ibaraẹnisọrọ infrastructures ati agbara nẹtiwọki lori Earth.
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To jo:
- ESA. Proba –3: Ipilẹ gangan ti n fo lati ṣe akiyesi corona oorun. Wa ni https://www.esa.int/Enabling_Support/Space_Engineering_Technology/Proba-3
- ESA. Oṣupa-ṣiṣe satẹlaiti ilọpo meji Proba-3 wọ orbit. 5 December 2024. Wa ni https://www.esa.int/Enabling_Support/Space_Engineering_Technology/Proba-3/Eclipse-making_double_satellite_Proba-3_enters_orbit
- ESA. Awọn ohun ijinlẹ aaye marun Proba-3 yoo ṣe iranlọwọ yanju.Wa ni https://www.esa.int/Science_Exploration/Space_Science/Five_space_mysteries_Proba-3_will_help_solve
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Awọn nkan ibatan
- PROBA-V Pari ọdun meje ni Orbit Sìn Eda eniyan (8 May 2020)
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![Pinterest](https://pinterest.com/pin/create/button/?url=https://www.scientificeuropean.co.uk/sciences/space/proba-3-the-first-ever-precision-formation-flying-mission/&media=https://www.scientificeuropean.co.uk/wp-content/uploads/2024/12/Proba-3_fact_sheet.jpg&description=ESA’s PROBA-3 mission, which lifted off on ISRO’s PSLV-XL rocket on 5 December 2024, is a “solar eclipse-making" two satellite formation of occulter and the coronagraph spacecrafts. It will enable observation of solar corona by coronagraph spacecraft for 6 hours in every 19h hour 36 minute orbit through on-demand creation of total solar eclipse by the occulter spacecraft of the formation. As the demonstration of formation flying technologies, PROBA-3 mission paves the way for future interferometry-based LISA mission (which will be formation of three spacecrafts in space) for detection of low frequency gravitational waves (GWs).){kind=link}