News

In the following table the most important events during the realization of GRACE-FO are chronologically listed.

2017

07.02.2017

The Multi Satellite Dispenser (MSD) Critical Design Review (CDR) has been successfully performed at Airbus Defence and Space S.A. (CASA Espacio premises), Madrid, Spain.

2016

 

14.11.2016

As the Russian/Ukraine Dnepr and corresponding launch services can no longer be provided by the International Space Company Kosmotras (ISCK), the joint NASA-GFZ Joint Steering Group has decided to exchange the GRACE-FO launcher. The corresponding contract was signed today by the Board of GFZ and Iridium Satellite LLC. This includes a "Rideshare" between GRACE-FO and 5 Iridium-Next satellites on a Space-X Falcon-9 from Vandenberg Air Force Base in California within the launch period December 2017 till February 2018. This also includes a contract with Airbus D&S who will build the necessary Multi Satellite Dispenser and will perform the Launch Service Management under contract of GFZ. 
Further information can be found here.

01.11.2016

The Environmental Test Campaign for FM1 has begun at IABG.

28.10.2016

Airbus D&S has completed the first of the twin GRACE-FO satellites. More infos can be found here.

21./22.09.2016

The Environmental Test Readiness Review was successfully passed at at the IABG (Industrieanlagen-Betriebsgesellschaft mbH) in Ottobrun.

2015

 

08/2015-10/2016

Integration of the instruments and satellites at Airbus D&S

21.-22.07.2015

The System Integration Review (SIR) was sucessfully passed at Airbus in Immenstaad.

26.05.2015

Airbus Defence and Space begins building GRACE-FO climate satellites. Further information can be found here.

29./30.04.2015

The Mission Operations System (MOS) Critical Design Review (CDR) has been successfully accomplished at GFZ/GSOC in Oberpfaffenhofen.

26.03.2015

The joint US/D Science Data System (SDS) Critical Design Review (CDR) has been successfully accomplished at JPL, Pasadena.

25.-26.02.2015

The 5. Launcher Progress Meeting was held at STI.

02.-05.02.2015

The Project Critical Design Review (CDR) was sucessfully passed at Airbus in Immenstaad.

2014

 

19.-20.11.2014

The 4. Launcher Progress Meeting was held at STI.

29.-31.07.2014

The Launch System Preliminary Design Review (PDR) has been successfully accomplished at STI in Immenstaad.

16.-17.07.2014

The Mission Operations System (MOS) Preliminary Design Review (PDR) has been successfully accomplished at DLR/GSOC in Oberpfaffenhofen.

26.06.2014

The joint US/D Science Data System (SDS) Preliminary Design Review (PDR) has been successfully accomplished at JPL, Pasadena.

05.06.2014

The joint US/D Laser Ranging Interferometer (LRI) Critical Design Review (CDR) has been successfully accomplished at JPL, Pasadena.

15.05.2014

The Microwave Instrument (MWI) Critical Design Review (CDR) has been successfully accomplished at JPL, Pasadena.

02.05.2014

A European GRACE-FO Science Team Meeting took place during the EGU conference in Vienna.

28.-30.04.2014

The 3. Launcher Progress Meeting was held at STI.

19.02.2014

The 2. Launcher Progress Meeting took place at STI.

11.02.2014

The Board of the German Research Centre for Geosciences has signed the Memorandum of Understanding (MOU) with NASA Administrator Charles Bolden Jr. to mutually realize the follow-on mission of GRACE (Gravity Recovery and Climate Experiment). The corresponding press release can be found here.

21.-24.01.2014

The Project Preliminary Design Review (PDR) was sucessfully passed at Airbus in Immenstaad. The transition into phase C happened on March 3, 2014.

2013

 

19.12.2013

The 1. Launcher Progress Meeting was accomplished at STI.

16.12.2013

The LRI Maturity Assessment Review took place at JPL.

06.12.2013

The contract to provide the DNEPR launcher and corresponding launch services has been signed by GFZ and the International Space Company Kosmotras (ISCK).

18.-19.11.2013

The Accelerometer Preliminary Design Review was held at ONERA, France.

28.10.2013

The Flight System Star Tracker Mission Readiness Review took place at the Danish Technical University (DTU), Copenhagen.

22.10.2013

A GRACE-FO Science Data System Meeting took place in Austin, Texas, in forefront of the GSTM2013.

21.-22.10.2013

The Launch Vehicle Kick-off Meeting was held at STI in Immenstaad.

18.10.2013

The On-Board Computer (OBC) Mission Readiness Review was held at Thales-Alenia, Italy.

15.-16.10.2013

The Power and Thermal Preliminary Design Review was held at Astrium GmbH in Immenstaad.

02.-03.10.2013

The Flight Software Preliminary Design Review was held in Bristol, England.

03.09.2013

The European GRACE-FO Science Team Kick-off Meeting took place during the IAG2013 conference in Potsdam.

16.-17.07.2013

The Accelerometer Electronics Preliminary Design Review was held at Onera in Paris.

20.06.2013

GFZ and NASA have jointly selected the DNEPR rocket to launch GRACE-FO in August 2017.

17.06.2013

The funds for the German participation in GRACE-FO have now been approved by BMBF. Further information can be found here.

30.-31.05 2013

The joint US/D Laser Ranging Interferometer (LRI) Preliminary Design Review (PDR) has been successfully accomplished at JPL, Pasadena.

16.05.2013

Firm agreement by BMBF to GFZ to provide funds for the realization of the German mission elements within time frame 01.10.2012 and 31.08.2017.

06.-07.05.2013

The Laser Ranging Interferometer (LRI) Tripple Mirror Assembly (TMA) Subsystem Preliminary Design Review (PDR) has been successfully accomplished at Cassidian, Oberkochen, and SpaceTech, Immenstaad.

29.04.2013

The Microwave Instrument (MWI) Preliminary Design Review (PDR) has been successfully accomplished at JPL, Pasadena.

23.-26.04.2013

The Laser Ranging Interferometer (LRI) Optical Bench System (OBS) Subsystem Preliminary Design Review (PDR) has been successfully accomplished at DLR, Berlin, Astrium, Friedrichshafen, and SpaceTech, Immenstaad.

22.04.2013

The Microwave Instrument (MWI) Preliminary Design Review was held at JPL.

15.03.2013

GRACE-FO Science Data System (SDS) Kick-off Meeting, JPL, Pasadena

14.03.2013

The Laser Ranging Interferometer (LRI) Laser Stabilization Cavity Subsystem Critical Design Review (CDR) has been successfully accomplished at Ball Aerospace.

07.-08.03.2013

The K-Band Ranging (KBR) Subsystem Mechanical/Thermal Preliminary Design Review (PDR) has been successfully accomplished at Astrium, Friedrichshafen.

28.02.2013

The Ultra-Stable Oscillator (USO) Critical Design Review (CDR) has been successfully accomplished at the John Hopkins University Applied Physics Laboratory in Maryland/USA.

26.-28.02.2013

The Attitude and Orbit Control System (AOCS) Preliminary Design Review (PDR) has been successfully accomplished at Astrium, Friedrichshafen.

09.01.2013

The US Laser Ranging Interferometer (LRI) Preliminary Design Review (PDR) has been successfully accomplished at JPL, Pasadena.

2012

 

29.11.2012

Astrium will build, as for GRACE, under contract of JPL the GRACE-FO satellites. The corresponding agreement has been signed today in Friedrichshafen. Further informationen you can found at GFZ or at Astrium.

14.11.2012

The Laser Preliminary Design Review (PDR) has been successfully accomplished at  TESAT.

01.11.2012

The LRI Laser Cavity Preliminary Design Review (PDR) has been successfully accomplished at JPL, Pasadena.

01.10.2012

The BMBF assured GFZ of funding of the German project contributions within a Letter of Intent (LOI).

27.09.2012

The Satellite Structure Inheritance Review has been successfully accomplished at Astrium, Friedrichshafen.

25.09.2012

The Mass Trim Mechanism (MTE) and Mass Trim Equipment (MTE) Inheritance Review (PDR) have been successfully accomplished at Astrium, Friedrichshafen.

03.09.2012

Begin of Phase-B

01-02.08.2012

German Kick-off Meeting of the Laser Ranging Interferometer (LRI) at DLR, Bremen

11.07.2012

The Mission Definition (MDR) and System Requirements Review (SRR) has been successfully accomplished at JPL/NASA.

21.06.2012

The star camera Preliminary Design Review (PDR) has been successfully accomplished at DTU in Denmark.

19.06.2012

The S/W Coding Preliminary Design Review (PDR) has been successfully accomplished at Astrium, Friedrichshafen.

15.-16.05.2012

A delegation of NASA/JPL (Jet Propulsion Laboratory) has visited GFZ to discuss the Memorundum of Understanding between NASA and GFZ and the Cooperative Project Plan between JPL and GFZ in the frame of the GRACE-FO satellite mission. These to contracts and documents describe the roles and responsibilities within the mission. GFZ will be responsible for the launcher and launch services, mission operations, provision of Laser Retro-Reflectors (LRR) for each satellite and contributions to the Laser Ranging Interferometer (LRI) and the Science Data System developments.

22.03.2012

The onboard computer (OBC) Preliminary Design Review (PDR) has been successfully accomplished at TAS in Milano, Italy.

19.03.2012

The Inertial Measurement Unit (IMU) Preliminary Design Review (PDR) has been successfully accomplished at Astrium, Toulouse.

01.01.2012

Begin of Phase-A

2011

 

28.10.2011

The Mission Concept Review (MCR) has been successfully accomplished at JPL, Pasadena.

25.10.2011

State Secretary Schütte (BMBF) assured NASA Administrator Charles F. Bolden Jr. the joint funding of German GRACE-FO contributions „Provision of a launcher and launch services, mission operations (with US support), scientific analysis and dissemination, contribution to a joint development of a experimental Laser Ranging Interferometer (LRI) as well as provision of Laser Retro-Reflectors (LRR) for each satellite“ by BMBF, BMWi, HGF, GFZ and DLR.

20.07.2011

NASA Administrator Charles F. Bolden Jr. invited BMBF, BMWi, HGF, GFZ and DLR to build a GRACE Follow-on mission „GRACE-FO“ again in German-US partnership.

2009

 

06.10.2009

Meeting at GFZ in Potsdam of the German-US GRACE partners on invitation of Prof. Hüttl. JPL, UTCSR, Astrium, STI and GFZ decided to jointly work on the realization of GRACE continuation mission.

Contact

Prof. Dr. Frank Flechtner

Head of Section 1.2:
Global Geomonitoring and Gravity Field

Telegrafenberg
building A17 room 00.12

tel. +49 331 288-1130

c/o DLR Oberpfaffenhofen
Münchner Str. 20
D-82234 Wessling
building 126 room 113

tel. +49 8153 90832 10