| 词条 | Ariane flight VA245 |
| 释义 |
| name = Ariane flight VA245 | image = Ariane Flight VA245.jpg | upright = yes | alt = The BepiColombo payload stack, depicted flying towards the planet Mercury, with the Sun and contrails of Mercury's magnetosphere visible | caption = Official poster for the flight | rocket = Ariane 5 ECA | launch = {{Start date|2018|10|20|df=yes}}, 01:45:28 UTC | operator = Arianespace | pad = Kourou ELA-3 | azimuth = East | payload = {{Hlist|Mio|MPO|MTM}} | outcome = Success | serial = 5105 | succession = Ariane launches | previous = VA243 | next = VA246 }} Ariane Flight VA245[1][2] is the Ariane 5 space launch of BepiColombo that took place on {{Date|2018-10-20}} at 01:45:28{{nbsp}}UTC from the Guiana Space Centre. It was the {{Ordinal|101}} launch of Ariane 5 (the {{Ordinal|5}} in {{Date|2018}}), and the {{Ordinal|301}} Arianespace mission (the {{Ordinal|7}} in {{Date|2018}}). PayloadThe payload of the launcher was the BepiColombo spacecraft. The total payload mass was approximately {{convert|4241|kg}}, including the payload adapter. BepiColombo{{Main|BepiColombo}}BepiColombo had a liftoff mass of approximately {{convert|4081|kg}}. It comprises 3 different elements that will remain attached together during launch and cruise to Mercury: the Mercury Transfer Module (MTM), the Mercury Planetary Orbiter (MPO), and the Mercury Magnetospheric Orbiter (Mio or MMO). The assembly was accommodated inside the long version of the upper stage fairing.[1] BepiColombo, a joint mission between ESA and JAXA, is Europe's first space mission to Mercury. The European modules (MTM and MPO) were designed and manufactured by Airbus at its Friedrichshafen site in Germany as prime contractor for ESA, heading a consortium of 83 companies from 16 countries.[3] The Japanese module (Mio) was built by ISAS for JAXA.[1] This flight was Airbus's {{Ordinal|121}} mission, ESA's {{Ordinal|51}} mission and {{Ordinal|73}} spacecraft launched by Arianespace, and the latter's {{Ordinal|23}} deep space mission.[1][7]Mission overviewLaunch dateThe {{Ordinal|7}} Arianespace launch of {{Date|2018}} took place on {{Date|2018-10-20}} at 01:45:28{{nbsp}}UTC ({{Date|2018-10-19}} 22:45:28 local time) from Ariane Launch Complex No. 3 (ELA 3) in Kourou, French Guiana.[1][4][5] Pre-flight activitiesThe different parts of the spacecraft arrived in French Guiana between April 24 and May 9.[1] Deployment testing of BepiColombo{{'s}} MTM 2 solar arrays (which will generate up to 11.2 kW of power[1]) were performed at the Guiana Space Centre in the SC5 facilities.[6] The MMO was integrated on the MPO between August 20 and 21. They were both integrated on the MTM between September 19 and 20 to complete BepiColombo. BepiColombo was assembled with its payload adapter on October 4, integrated on the launch vehicle on October 9, and enclosed within the fairing on October 11.[1] The launch readiness review will take place on {{Date|2018-10-17}} in Kourou to authorise the start of the final operations.[5] OrbitThe launch lasted 26 minutes and 47 seconds until separation, placing BepiColombo into a Mercury transfer orbit, escaping the Earth with a hyperbolic escape velocity of about {{Convert|3.475|km/s}} and at an inclination of about -3.8 degrees.[1][4] It is expected to be captured by and start orbiting Mercury approximately on {{Date|2025-12-05}}, after a 7-year travel that will include several flybys of the Earth, Venus, and Mercury itself.[7] References1. ^1 2 3 4 5 6 7 8 {{cite web|title=VA245 Launch Kit|url=http://www.arianespace.com/wp-content/uploads/2018/10/VA245-launchkit-EN.pdf|website=Arianespace|date=11 October 2018|accessdate=14 October 2018}} 2. ^{{Cite web|title=Ariane Flight VA245|url=http://www.arianespace.com/mission/ariane-flight-va245/|website=Arianespace|accessdate=20 October 2018|archiveurl=http://archive.fo/oDkTT|archivedate=20 October 2018|deadurl=no}} 3. ^{{cite web|title=BepiColombo is readied for its October 19 Ariane 5 flight on a mission to Mercury|url=http://www.arianespace.com/mission-update/va245-bepicolombo-preparations/|website=Arianespace|date=2 October 2018|accessdate=14 October 2018|language=en}} 4. ^1 {{cite web|title=Flight VA245: Arianespace to deliver BepiColombo, Europe's first mission to Mercury, for ESA and JAXA|url=http://www.arianespace.com/press-release/flight-va245-arianespace-to-deliver-bepicolombo-europes-first-mission-to-mercury-for-esa-and-jaxa/|website=Arianespace|date=12 October 2018|accessdate=14 October 2018|language=en}} 5. ^1 2 {{cite web|title=Supporting science: BepiColombo is integrated atop the Ariane 5 launcher for its mission to Mercury|url=http://www.arianespace.com/mission-update/va245-bepicolombo-integrated/|website=Arianespace|date=12 October 2018|accessdate=14 October 2018|language=en}} 6. ^{{cite web|title=BepiColombo "spreads its wings" in preparation for Arianespace's October launch|url=http://www.arianespace.com/mission-update/va245-bepicolombo-testing/|website=Arianespace|date=1 August 2018|accessdate=14 October 2018|language=en}} 7. ^{{cite web|title=BepiColombo fact sheet|url=http://sci.esa.int/bepicolombo/47346-fact-sheet/|website=ESA||date=14 September 2018|accessdate=14 October 2018|language=en}} External links
4 : Ariane (rocket family)|2018 in spaceflight|October 2018 events in South America|2018 in French Guiana |
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