29 september 2020

De komende lancering van de LISA Pathfinder van minuut tot minuut [Update]

[Update 2 december 20.30 uur.] De lancering zal plaatsvinden op donderdag 3 december om 05.04 uur Nederlandse tijd.

Credit: ESA/A. Chance

Woensdag 2 december a.s om 05:15 uur Nederlandse tijd – wekker zetten! – wordt de Europese LISA Pathfinder met de dertig meter hoge Vega raket vanaf de ruimtehaven Kourou in Frans Guyana gelanceerd. Alles is vanaf 04.55 uur live te zien via ESA TV. Details over die missie kan je hier vinden, maar een zeer uitgebreide tabel met minutieus alles over de lancering vind je hieronder. Hierin is MET=Mission Elapsed Time – before/after liftoff times are -/+, GMT=Greenwich Mean Time, CET=Central European Time (=Nederlandse tijd), Vega VV06=Arianespace Vega launcher flight VV06, ESOC=European Space Operations Centre, Darmstadt, Germany.

METGMTCETVega VV06LISA Pathfinder/ESOC
L€“09:10:0019:05:0018:05:00Flight Control Team €˜on console€™ in ESOC Main Control Room; start of prelaunch activities
L-09:00:0019:15:0020:15:00ESOC teams begin monitoring spacecraft and ground systems, receiving live telemetry from LISA Pathfinder on top of Vega via umbilical
L-08:00:0020:15:0021:15:00Start of Vega countdown
L-06:00:0022:15:0023:15:00Start of ESOC network countdown; mission controllers continue monitoring LISA Pathfinder
L-05:10:0023:05:000:05:00Vega Inertial Reference System on;
Vega telemetry starts flowing
L-05:05:0023:10:000:10:00Flight Director conducts first formal check of ground segment launch readiness: confirms that teams, systems and stations are ready 
L-04:55:0023:20:000:20:00Flight Director reports ground segment status to Kourou launch control centre
L-04:20:0023:55:000:55:00Activation of Vega onboard computer and loading of flight program
L-02:40:001:35:002:35:00Mobile gantry withdrawal (45 mins)
L-01:55:002:20:003:20:00Alignment and checks of Inertial Reference System (after withdrawal of gantry)
L-01:15:003:00:004:00:00Vega telemetry transmitter on (after withdrawal of gantry)
Vega transponders on
L-00:55:003:20:004:20:00Flight Director conducts Go/NoGo roll call in Main Control Room
L-00:35:003:40:004:40:00Spacecraft Operations Manager conducts final briefing with ground tracking stations
L-00:34:003:41:004:41:00Launcher system ready
L-00:25:003:50:004:50:00Flight Director conducts final formal check of ground segment launch readiness: confirms that teams, systems and stations are ready
L-00:15:004:00:005:00:00LISA Pathfinder on internal powerFlight Director confirms ground segment ready for liftoff to Kourou launch control centre
L-00:10:004:05:005:05:00Last Kourou weather report before launch
L-00:04:004:11:005:11:00Start of Vega synchronized sequence
L-00:00:084:14:525:14:52Last possible launch abort
0:00:004:15:005:15:00Vega first stage ignition
0:00:014:15:015:15:01LIFT OFF
L+00:01:534:16:535:16:53Separation of first stage
L+00:01:544:16:545:16:54Second stage ignition
L+00:03:374:18:375:18:37Separation of second stage
L+00:03:494:18:495:18:49Third stage ignition
L+00:04:034:19:035:19:03Fairing jettisoned
L+00:06:304:21:305:21:30Separation of third stage
L+00:07:294:22:295:22:29Fourth stage first burn
L+00:16:234:31:235:31:23Fourth stage shutdown
L+01:41:195:56:196:56:19Fourth stage second burn
L+01:42:535:57:536:57:53Fourth stage second shutdown
L+01:45:336:00:337:00:33LISA Pathfinder release command
L+01:45:336:00:337:00:33SEPARATIONLISA Pathfinder separates from fourth stage; begins automatic sequence
L+01:47:036:02:037:02:03Acquisition of signal (earliest) from satellite via Kourou station
L+01:48:006:03:007:03:00ESOC issues test command
L+01:55:106:10:107:10:10Fourth stage third burn, for deorbiting
L+01:55:176:10:177:10:17Fourth stage shutdown
L+02:10:006:25:007:25:00LISA Pathfinder end of automatic sequence. In stable, Sun-pointing mode. ESOC teams continue checkout

Bron: ESA.

Comments

  1. Zojuist vernomen van Govert Schilling, die aanwezig is in Frans Guyana: De lancering zal plaatsvinden op donderdag 3 december om 05.04 uur Nederlandse tijd. De tijd in de tabel hierboven loopt dus telkens 11 minuten voor op de werkelijke tijd.

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