TARANIS a CNES Scientific Mission – C. Bastien-Thiry Workshop on Coupling of Thunderstorms and Lightning Discharges to Near-Earth Space – Corte 2008 TARANIS

TARANIS a CNES Scientific Mission – C. Bastien-ThiryWorkshop on Coupling of Thunderstorms and Lightning Discharges to Near-Earth Space – Corte 2008

TARANIS a CNES Scientific Mission

I. Project Progress Status

Christophe Bastien-Thiry TARANIS Project Manager - CNES, France


CNES scientific mission : http://smsc.cnes.fr


Mission n°1 : DEMETER ■ Mission IONOSPHERIC

DISTURBANCES

■ Launch : june 2004 Baïkonour. Dniepr

CNES MYRIADE scientific missions


Mission n°2 : PARASOL

■ MissionCLIMATOLOGY –

ATMOSPHERIC SCIENCE

■ Launchdec 2004. Kourou Ariane V



Mission n°3 : PICARD■ Mission

SUN OBSERVATION

■ Launch June 2009 - Dniepr


PICARD


Mission n°4 : MICROSCOPE

■ MissionFUNDAMENTAL PHYSICS

■ Launch : 2012



TARANIS a CNES Scientific Mission


TARANIS CNES WEBSITE http://smsc.cnes.fr/TARANIS


TARANIS MISSION

Description of the TARANIS scientific objectivesand the instrument set

See the presentation of François LEFEUVRE

TARANIS Principal Investigator


TARANIS : Programmatic milestones

• Phase 0 studies : Nov. – Dec. 2001

• Decision of Phase A : Dec. 2004• Pre Phase A studies : April – July 2005• Phase A studies : Sept. 2005 – May 2006

• CPS (Scientific Advisory Committee) recommends TARANIS : April 2007• CNES follows the CPS recommendation

• Decision of Phase B : July 2007• Kick Off Meeting of Phase B : Sept. 2007 • Phase B studies : in progress



CPS of June 13th, 2008

TARANIS in the highest priority missions set

CPS of November, 2008

Final approval for TARANIS mission



But the sky is not so clear!


TARANIS PHASE B : HOT SPOTS

1. XGRE development

2. Mechanical accommodation

3. Orbit parameters

4. Launch opportunities


TARANIS PHASE B HOT SPOTS : XGRE development

■ The development of the X and Gamma Ray Experiment (XGRE) is not yet

granted

■ XGRE (with a cooperation of the DNSC) was supported by LANL and since last Sept.

by JHU/APL with the hope of NASA funds

■ But NASA did not select XGRE through the SMEX MO selection (announcement

NASA HQ, June 2008 - Friday 20th)

■ XGRE instrument is an essential part of the TARANIS payload

■ A new organization must be found for XGRE


TARANIS PHASE B HOT SPOTS : Mechanical accommodation

1. A large set of scientific instruments with different FOV

requirements

2. Several alignments constraints between instruments

3. Several deployment devices required

4. Thermal constraints

5. Integration constraints

6. Launcher constraints


Mechanical accommodation : BASELINE

MCP /MC MCP /PH

XGRE

IDEE

IME /BF

IME /HF

IMM

X band antenna

+X Sun Sensor

S band antenna

Star tracker MEXIC 1


Payload accommodation : BASELINE


TARANIS PHASE B HOT SPOTS : Launcher constraints

■ CNES mission has to respect the European Launcher Policy

(Dec.06)

■ European launcher operators first

■ Launchers taken into account : AR5, SOYOUZ, VEGA

■ Back-up solutions : DNEPR, ROCKOT

Up to now, for MYRIADE missions,

SOYOUZ (launched from Kourou) as piggy-back is the nominal solution



SOYOUZ ASAP-S

Arianespace System for Auxiliary Payload with SOYOUZ

From Users Manual draft, May 2008



IMMStar tracker

Volume dedicated tothe micro-satellites



Next steps

■ Modifications to the accommodation baseline

■ Negotiation with Arianespace

■ Adaptation of the instrument requirements (FOV, alignments, …)

■ Ultimate step : de-scoping negotiations with PIs


TARANIS PHASE B HOT SPOTS : Orbit parameters

Orbit parameters requirements :

Quasi polar orbit, altitude between 650 and 750 km,

quasi SSO (Sun Synchronous Orbit), local time drift [22h00,2h00]

■ As far as TARANIS satellite is not the main payload of the launcher,

high probability to be launched on a pure SSO without local time drift

■ We have to respect the

European Code of Conduct for Space Debris Mitigation

→ re-entry rules before 25 years

■ Propulsive capacity of the satellite will be mainly devoted (95%) to injection corrections and re-entry

operations : nearly nothing left to modify the local time or the drift


TARANIS PHASE B HOT SPOTS : Orbit parameters

Orbit parameters question

Highly linked to the launch opportunities and the capacity of

re-ignition of the last stage of the launcher

At the scientific level, necessity to refine or adjust the orbit

requirements : local time range.

→ Definition of which hours are forbidden, acceptable, optimal


TARANIS PHASE B HOT SPOTS : Launch opportunities

Mission Altitude (km) Inclinaison (°) Heure locale Lancement Divers (Phasage,…)Sentinel-1a 693 SSO 6h00 ND 2012Sentinel-1b 693 SSO 6h00 ND 2014Sentinel-2a 786 SSO 10h30 ND 2012Sentinel-2b 786 SSO 10h30 ND 2014Sentinel-3a 814 SSO 10h00 ND 2012Sentinel-3b 814 SSO 10h00 ND 2013Sentinel-5 P 800 SSO 13h30 ND 2014 -SWOT 950 78 - 2016/2017 -SHOOT-1 482 SSO 13H30 NA 2015 Pas de phasage avec SHOOT 2SHOOT-2a 800 SSO 13H30 NA 2015SHOOT-2b 800 SSO 13H30 NA 2015SHORT-1a 642 SSO 10h15 ND 2015 Position orbitale 0°SHORT-1b 642 SSO 10h15 ND 2015 Position orbitale 80°SHORT-2a 642 SSO 16h15 ND 2015 Position orbitale 320°SHORT-2b 642 SSO 16h15 ND 2015 Position orbitale 240°CERES-1 700 82 - 2014CERES-2 700 82 - 2014CERES-3 700 82 - 2014CERES-4 700 82 - 2014Pléiades-1B 695 SSO 10h15 ND 2011 Pléiades-1&Pléiades-2 à 180°TARANIS 695 SSO HLD 23h00 NA 2012 Dérive d'HL AD (1 à 2 h/an)MICROSCOPE 790 SSO 6h ou 18h ND 2012SMESE 719 SSO 18h00 ND 2013EARTHCARE (BD-M.O) 432 SSO 22h30 NA 2013 long.asc.node=337,5GCOM-W1 (BD-SFCG) 699,6 SSO 1h30 NA 2012 H2, piggy-back?WORLDVIEW 2 450 SSO 22h30 NA 2010 -

2 plan de 2 satellites en essaiminterplan : d=300km à lat=0° ,

d=100 km à lat=70°dans le plan : d=100 km

S1a&S1b à 180°

S2a&S2b à 180°

S3a&S3b à 180°

2a et 2b à 173,3°


CONCLUSION

■ TARANIS mission is very well supported by the scientific community

■ The CNES CPS strongly support the TARANIS mission

■ Good scientific and technical international cooperation

■ Technical matters has still to be solved (accommodation)

■ But, we have to find a way for XGRE instrument

→ Impact on the planning to be evaluated at the Project Level


Thank You

Documents

TARANIS a CNES Scientific Mission – C. Bastien-Thiry Workshop on Coupling of Thunderstorms and Lightning Discharges to Near-Earth Space – Corte 2008 TARANIS