MSG-4 Milestones

 MSG-4 (main milestones >2006) performed in Thales Cannes

• Completion of Manufacturing: 2006
• Anomaly detected on SEVIRI: 2006
• Storage at Thales Cannes: 2006-2012
• SEVIRI FM-4 dismounting from the platform: Sept./Oct. 2012
• SEVIRI Scan mechanism refurbishment: Jan./June 2013
• SEVIRI instrument testing:  Jun./Dec.2013
• SEVIRI remounting + 1st test sequence: as from Jan. 2014
• MSG-4 Acoustic test: Apr. 2014
• MSG-4 Integrated System Tests (part 1)
• MSG-4 Optical Vacuum Test July 2014
• MSG-4  Integrated System Tests (part 2)
• MSG-4 Weighing, Center of Gravity, Moment of Inertia, Balancing, November 2014
• MSG-4 Global Leak Test: January/February 2015
• Consent to Ship: 18/03/2015
• MSG-4 Departure from Thales: 28/04/2015

MSG-4 Main Milestones during Launch Campaign (2015) in CSG

• MSG-4 Arrival at CSG: 28/04/2015
• Safety test (propellant tank pressurisation): 05/05/2015
•  Payload and System Test: 15/05/2015
• Spacecraft final closure (+Antenna Connection Test): 30/05/2015
• Review: Consent to Fueling: 04/06/2015
• Helium Tank pressurisation (264bar): 04/06/2015
• Mechanical Fit check (MSG-4 on Flight Adaptor): 05/06/2015
• Transfer to HR (Hall de Remplissage ): 05/06/2015
• Dry satellite weighing: 08/06/2015
• Start MSG-4 Fueling: 17/06/2015
• End MSG-4 Fueling: 20/06/2015
• Review: Launch readiness review: 22/06/2015
• Start of the POC: 25/06/2015
• MSG-4 mating on Adaptateur de Charge Utile (ACU): 26/06/2015
• MSG-4 transfer form S5-B to BAF: 27/06/2015 (L-8)
• MSG-4 mated on Ariane 5: 29/06/2015 (L-7)
• Encapsulation: 30/06/2015 (L-6)
• Dress rehearsal: 02/07/2015 (L-5)
• 2nd Encapsulation after StarOneC4 re-inspection: 07/07/2015 (L-6 bis)
• Review: Launch Readiness Review (RAL): 10/07/2015 (L-3)
• Roll-our, transfer from BAF to ELA-3: 13/07/2015 (L-1)
• Launch: 15/07/2015 (L0). H0:18:42 Kourou Time

MSG-4 LEOP (Launch Early Operation Phase) after Launch

• Launch T + 40 minute - MSG-4 separation form launcher:
• T + 4h - 1st spin (55rpm)
• T + 37h - 1st apogee engine firing by LAM: 17/07/2015
• T + 62 hours - 2nd apogee firing by LAM: 18/07/2015
• T + 111 hours - 3rd apogee firing by LAM: 20/07/2015
• T + 134 hours - 4th apogee firing by LAM: 21/07/2015
• T + 6d and 9h - Spin axis erection (1st part): 22/07/2015
• T + 6d and ca 14h - Spin axis erection (2nd part)
• T + 7d and 11h - Spin up to 99,8 rpm
• T + 8 days and 9,5 hours - Start of SEVIRI operations: 23/07/2015
• SEVIRI scan mechanism release: 23/07/2015
• Full motion of the scan mirror (rapid mode): 23/07/2015
• T + 8d and 14,5h - Circularisation maneuver
• ca T + 10d end of LEOP, start of ESOC handover to EUMETSAT: 26/07/2015
• First image planned:  04/08/2015 @ 10:00 UTC