O. Piersanti Athens 0 7 / 0 2 / 2 0 1 4 ESA UNCLASSI FI ED For - - PowerPoint PPT Presentation

ESA UNCLASSI FI ED – For Official Use

Euclid Mission Industry Space Day in Greece

• O. Piersanti

Athens 0 7 / 0 2 / 2 0 1 4

ESA Presentation | O. Piersanti | Athens | 07/ 02/ 2014 | Slide 2 ESA UNCLASSI FI ED – For Official Use

Cosm ic Vision 2 0 1 5 -2 0 2 5

ESA Presentation | O. Piersanti | Athens | 07/ 02/ 2014 | Slide 3 ESA UNCLASSI FI ED – For Official Use

Science Program s Under Developm ent

(Launched)

ESA Presentation | O. Piersanti | Athens | 07/ 02/ 2014 | Slide 4 ESA UNCLASSI FI ED – For Official Use

 Euclid is a science mission of ESA in the field of cosmology.  The Euclid mission was approved by ESA and delegated bodies for a planned launch in 2020 in the frame of the Cosmic Vision 2015-2025 ESA Science Program.  Euclid is an optical/near-infrared survey mission designed to understand the origin of the accelerating expansion of the Universe.  Need to consider two gravitational forces generated by:

• Dark Energy which causes the matter to separate
• Dark Matter which causes the matter to agglomerate

 About 95% of the energy in the universe must be in those two forces that were never detected directly  Euclid will searches the signatures of the dark energy and matter  Euclid will investigate and characterize the nature of dark energy, dark matter and gravity making use cosmological probes.

The Euclid Mission ( 1 )

ESA Presentation | O. Piersanti | Athens | 07/ 02/ 2014 | Slide 5 ESA UNCLASSI FI ED – For Official Use

Dark matter and Dark Energy in the Universe

The Euclid Mission ( 2 )

ESA Presentation | O. Piersanti | Athens | 07/ 02/ 2014 | Slide 6 ESA UNCLASSI FI ED – For Official Use

The dark m atter and energy can be studied by looking at: 1 . The geom etry of the universe a. Measure of position of galaxies as a function of redshift 2 . Grow th of density perturbations a. Evolution of structure as a function of cosmic time, growth rate 3 . Galaxy im age distortion caused by dark m atter bending light

Dark Matter

The Euclid Mission ( 3 )

ESA Presentation | O. Piersanti | Athens | 07/ 02/ 2014 | Slide 7 ESA UNCLASSI FI ED – For Official Use

Space Segm ent - Spacecraft

• Mass: ~ 2 1 0 0 Kg
• Pow er: ~ 1 7 0 0 W
• Data: ~ 8 5 0 Gbit/ day
• X-band up/ dow n link for com m and and

control

• K-band for dow nlink HBR ( ~ 7 5

Mbit/ sec)

• Tw o I nstrum ents: Visible I m ager ( VI S)

and Near-I nfrared Spectrom eter and Photom eter ( NI SP)

• Korsch Telescope w ith SiC technology
• Launcher Soyuz from French Guyana w ith

Fregat upper stage

• Operational orbit around the Lagrange

point L2

• Nom inal m ission of 6 .2 5 years
• Spacecraft sized for 7 years
• Observation of > 1 5 0 0 0 Deg^ 2 of the

extra-galactic sky at a galactic latitude > 3 0 Deg and < -3 0 Deg ( Goal 2 0 0 0 0 deg^ 2 )

• Deployable and steerable K-band HGA ( 2

DoF)

• Telecom m unication period: 4 hrs per day
• Ground station w ill be either Malargue or

Cebreros

ESA Presentation | O. Piersanti | Athens | 07/ 02/ 2014 | Slide 8 ESA UNCLASSI FI ED – For Official Use

Space Segm ent - Payload

• Optical configuration: 3-mirrors

anastigmatic Korsch

• Field of view: 0.763×0.709 deg2,

0.45deg off-axis

• Free aperture: 1.2 m2
• VIS-CU and M2 mechanism for

calibration

• Silicon Carbide SiC-100 technologies
• Dichroic at the exit pupil transmit IR

light to NISP and reflects visible light to VIS

• A visible imager (VIS)
• A near-IR instrument (NISP)
• Instruments VIS et NISP at cryogenic

temperature (150 K et 95 K)

• Image quality requiring high stability

with related constraints on the spacecraft PSF

• Attitude control with feedback from

FGS, Gyros and STR

ESA Presentation | O. Piersanti | Athens | 07/ 02/ 2014 | Slide 9 ESA UNCLASSI FI ED – For Official Use

Space Segm ent – VI S & NI SP

• Visible Imaging in the wavelength range 550-900 nm;
• Near Infrared Photometric Imaging in the range 920-2000 nm;
• Near Infrared Spectroscopy in the range 1100-2000 nm;

ESA Presentation | O. Piersanti | Athens | 07/ 02/ 2014 | Slide 10 ESA UNCLASSI FI ED – For Official Use

Space Segm ent - Observation Strategy

• Wide Survey to

cover 15000 deg2

• f extragalactic sky

at a galactic latitude > 30 deg and < -30 deg

• Deep Survey to

cover 40 deg2

• Nominal survey

requires field steps slews (< 1.2 deg).

• Four

dithers per field

ESA Presentation | O. Piersanti | Athens | 07/ 02/ 2014 | Slide 11 ESA UNCLASSI FI ED – For Official Use

Ground Segm ent

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Launcher

• Soyuz 2.1B with Fregate

upper stage with direct insertion without parking

• rbit
• Launch from French

Guyana

ESA Presentation | O. Piersanti | Athens | 07/ 02/ 2014 | Slide 13 ESA UNCLASSI FI ED – For Official Use

Orbit

• Operational Orbit around L2 with direct injection by the launcher
• Ideal to make observation of the sky
• Stable thermal environment
• No eclipse
• Require Orbit correction maneuvers
• Constraints on the launch-able mass

ESA Presentation | O. Piersanti | Athens | 07/ 02/ 2014 | Slide 14 ESA UNCLASSI FI ED – For Official Use

The development of Euclid is based on 3 spacecraft models:

• Structure and Thermal Model (STM).
• Avionic Model (AVM).
• Flight Model (FM).

Note: Similar models are envisaged on the PLM.

Spacecraft AVM Verification of the Spacecraft electrical design by test. Verification of all electrical and software interfaces. Verification of the subsystem electrical performances in the integrated electrical environment. Verification of the Instruments electrical compatibility in the integrated electrical environment. Validation of the on-board software. Validation of the electrical test procedures and related applications. Spacecraft FM Verification of the electrical design. Verification of the system and subsystems functionalities and performances. Verification of alignment, leakage and mass properties. Spacecraft verification in mechanical and thermal environment. Verification of Ground Segment compatibility. Verification of the Spacecraft EMC and RFC. Optical Verification. Spacecraft STM

• Qualification of the mechanical

design.

• Qualification of the primary and

secondary structure by test.

• Verification of the mechanisms

function by test (TBC).

• Validation of the structural

mathematical models.

• Derivation of the design and

mechanical loads for the Spacecraft and its components.

• Fit check for the L/ V and internal

interfaces.

• Qualification of the thermal design.
• Validation of the thermal

mathematical models.

• Verification of the thermo-elastic

stability.

Spacecraft Developm ent

ESA Presentation | O. Piersanti | Athens | 07/ 02/ 2014 | Slide 15 ESA UNCLASSI FI ED – For Official Use

Product Tree

SVM Prime TAS-I

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Spacecraft & GS planning

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Euclid Procurem ent approach ( 1 / 2 )

 Euclid procurement approved by IPC ESA/ IPC(2012)1, add.41 in Paris, 27 June 2012  Euclid industrial work is to be procured in two steps:

• first, a procurement action covering the Payload Module (PLM), released

in July 2012 and placed in December 2012; ✔

• second a procurement action covering the Euclid Spacecraft and Prime

contractor activities, including the Service Module (SVM), released in December 2012; ✔

• A Contract Proposal was presented to June 2013 IPC for the full Prime

Contract (incl. SVM and subsumed PLM)✔  All activities to be subcontracted will be procured following the ESA Code of Best Practices (ESA/ IPC(2012)65,rev.2);

ESA Presentation | O. Piersanti | Athens | 07/ 02/ 2014 | Slide 18 ESA UNCLASSI FI ED – For Official Use

Euclid Procurem ent approach ( 2 / 2 )

 In principle, two steps:

• firstly the Prime Contractor will select the subsystems responsible,

including allocations for the units belonging to it;

• secondly the selected subsystem contractors will issue ITT for the

units procurements.  The procurement plan is regularly reviewed and adapted in order to achieve the GR return requirements;  In doing so, preferential clause, limitations, restricted competition or direct negotiation may be used;  Items may be grouped or, further broken down, to better suit the project needs and/ or help achieving GR;  For stringent technical and programmatic reasons, the competition may be enlarged to non-Member States.

ESA Presentation | O. Piersanti | Athens | 07/ 02/ 2014 | Slide 19 ESA UNCLASSI FI ED – For Official Use

Geo-Return Requirem ents

• 1. Payload Module contract only: (D, F, I,

UK) 60% , all others 40% ;

• 2. For the entire Euclid Industrial contract,

i.e. PLM+ SVM = >

ESA Presentation | O. Piersanti | Athens | 07/ 02/ 2014 | Slide 20 ESA UNCLASSI FI ED – For Official Use

I ndustry Days

Two general Industry Days have been organised by ESA and Industry.

• PLM Industry Day on 17-Apr-2013 (ESA and Astrium SAS): 140

participants from 80 companies.

• Spacecraft Industry Day on 15-Jan-2014 (ESA and TAS-I): 211

participants from 111 companies Related booklets are available on EMITS.

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Thank You