james webb space telescope (jwst) project status for the aas town hall phil sabelhaus jwst program...
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James Webb Space Telescope (JWST) Project Status for the AAS Town Hall
Phil SabelhausJWST Program Manager
January 5, 2010
Organization Mission Lead: Goddard Space Flight Center International collaboration with ESA & CSA Prime Contractor: Northrop Grumman Space Technology Instruments:
― Near Infrared Camera (NIRCam) – Univ. of Arizona― Near Infrared Spectrograph (NIRSpec) – ESA― Mid-Infrared Instrument (MIRI) – JPL/ESA― Fine Guidance Sensor (FGS) – CSA
Operations: Space Telescope Science Institute
Description
Deployable infrared telescope with 6.5 meter diameter segmented adjustable primary mirror
Cryogenic temperature telescope and instruments for infrared performance
Launch June 2014 on an ESA-supplied Ariane 5 rocket to Sun-Earth L2
5-year science mission (10-year goal)
James Webb Space Telescope (JWST)James Webb Space Telescope (JWST)
www.JWST.nasa.gov
JWST Science Themes
End of the dark ages: First light and reionization
The assembly of galaxies
Birth of stars and proto-planetary systems
Planetary systems and the origin of life
Optical Telescope Element (OTE)
Integrated Science Instrument Module (ISIM)
Sunshield
Spacecraft Bus
Warm Sun-facing Side
Cold Space-facing Side
Optical Telescope Element (OTE)
Integrated Science Instrument Module (ISIM)
Sunshield
Spacecraft Bus
Warm Sun-facing Side
Cold Space-facing Side
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JWST Full Scale Model at the GSFCJWST Full Scale Model at the GSFC
4
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JWST Compared with other TelescopesJWST Compared with other Telescopes
Hubble Space Telescope (HST): – 2.7 x diameter, 2.7 x longer wavelength
HST NICMOS: – 189 x FoV, – 38 x better sensitivity at K band, 8 x at H band
Spitzer: – 8 x Spitzer diameter – Diffraction limited at 2 microns vs. 6 microns – 8 to 24 x better angular resolution– 10 x lower dark current supports R ~ 1000 at high redshift
Ground: – JWST and GSMT are complementary where
capabilities overlap: – HST: Keck diameter ratio ~ JWST:GSMT – Background ~1,000,000 x larger on ground
at 5 microns
Real data: Spitzer 25 hours
Simulated: JWST 3 hours
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JWST Team and ResponsibilitiesJWST Team and Responsibilities
Integrated Science Instrument Module (ISIM) – GSFC•Structure – GSFC/ATK•MIRI- JPL & ESA/European Consortium•NIRSpec- ESA/Astrium•NIRCam – U of Arizona/LMATC•FGS/TFI – CSA/COM DEV
ISIM Radiators- NGAS/Ball
Optical Telescope Element (OTE) – NGAS/Ball
Backplane Structure – NGAS/ATK
Deployment Tower - NGAS
Launch Vehicle & Adapter- ESA/Arianespace
Spacecraft - NGAS
MIRI Cryocooler – JPL/NGASInstrument C&DH - GSFC
Sunshield – NGASMembrane – NGAS/SRS
ISIM Electronics Compartment (IEC)- GSFC
Overall Observatory - NGAS
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JWST System ArchitectureJWST System Architecture
Deep Space Network
Space Telescope Science InstituteScience & Operations Center
GSFC Flight Dynamics Facility
L2 Transfer Trajectory
L2 Point
L2 Lissajous Orbit
Ka-Band Science Link (Selectable 7, 14, 28 Mbps)S-Band Tlm Link (Selectable 0.2 - 40 Kbps)S-Band Cmd (Selectable 0.25, 2 and 16 Kbps)S-Band Ranging
Ariane 5 UpperStage Injects JWSTInto Direct Transfer
Trajectory
Ariane 5Launch System
NASA Integrated Services Network
Ariane PPF S5
CommunicationsServices for Launch(TDRS, ESA)
S-Band Tlm Link ( 2Kbps)S-Band Cmd Link (0.25 Kbps)S-Band Ranging
Observatory – Upper StageSeparation
S-Band Tlm Link ( 2Kbps)
Observatory Deployments-Solar Array-High Gain/ Medium Antennas-Sunshield-Optical Telescope Element
Communications Coverage ProvidedFor all Critical Events
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Ariane 5 Launch VehicleAriane 5 Launch Vehicle JWST is designed for launch on an
Ariane V launch vehicle with a 5 m diameter fairing
Launch from Kourou Launch Center (French Guiana) with direct transfer to L2 point
Payload launched at ambient temperature with on orbit cooling to 50 K via passive thermal radiators
JWST payload: 6330 kg
Ariane 5 ECA
French Guiana
JWST Master ScheduleJWST Master Schedule2008 2009 2010 2011 2012 2013 2014 2015
FY08 FY09 FY10 FY11 FY12 FY13 FY14 FY15
Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2
11/30/09
JWST Master Schedule
Major Mission Milestones
Integration & Test
OTE
JSC Activity
SSDIF Activity
Pathfinder Structure (PF) Flight Structure (PMBSS)
Primary Mirrors (PMSA)
Flight Sunshield
Spacecraft (SC)
SC & IES Simulators
Observatory FSW/EMTB
Build 1 & 2/V&V
ISIM
Integration & Test
NIRSpec
MIRI
NIRCam
FGS
Cooling System
Ground Segment
3
PDR/NAR
7
KDP-II
4
CDR
12
M O R
1
TRR
5
SIR
8
KDP-III
4
PSR
5
FRRKDP-IV
6
LRD
12
O RR
9
IDR Fab
12
ThrmlRev
2
Integ
9
TRR
1
Tes t
2
Depreps
SC PanelInteg 1
5 8
SC PanelInteg 2
9
CCA, Prop Integ
10
SCE Integ
11
CST 1, M oda l
12
Subsys Deploy
1
Vib
2
TV
4
Subsys Deploy
5 6
CST 2 / EM C
7
Acoustic, Vib,
Shock
9
Deployments, CST 3 &
M ass Props
1 5 5
Ship Prep
6
Launch Prep
10
O TE CDR
8
JSC CH AReady
5
O TE/ISIMInteg Review
1
ITT G SESRR
6
G SEPDA
3
G SECDA
7
InstallG SE
9
Bake- O ut
10
Cryo Prf
Load
11 12
Install PF
w o AO S
2
Chamber Comm
2
Install PF w / AO S
4
PF Cryo Tes t
9 10
Ambient
2
O TE/Flt ISIM Cryo
1
G SESRR
6
G SEPDA
3
G SECDA
10
SESReady
SSDIF Ready
1
G SE Ins tallation
8
PF O ptic s Integ
11
Flt O ptics Integ
3
Final M irror
5
Flt ISIMInteg
7 9
Acous, Vibe CoCi Test
9
CDA 3
PF Struts
7
PF PM BSS
10
Cry Cyc TRR
1
Cryo Cycle 3
PF SM SS
4
Final Testing 4
PF Struct Integ
6
7 10
O TE Struct Assy
11
M M S ISIM Tes t
12
Start FltCryo Test #1
9
Start Flt Cryo Test #2
1
Start FltCryo Test #3
1
PF PM SA
4
#1
5
#2
6
#3,
7
#4
7
#5
8
#6 (Last PM Batch)
2
SS PDR
12
Flt M embrane M at'l Fab Cpt 2
M M S PDA
6
NeXolve 1 /3 T/V M embrane Delivery
10
TMStart
11
NeXolveCDR
12
Q ual Test Comple te1
SS CDR
7
UPS M RR
12
Flt M embrane Fab
8
Del L-1
9
Del L-2
10
Del L-3
12
Del L-4
1
Del L-5
3 9
EPF-2 Tes ts
5
Tooling5
IVA Set Up & Testing
1
Fit Checks
8
M aunfa cturing & Test10
1
Integ & Test
6
Ship to I&T
12
StructurePDA 7
PDR
8
Structure CDA 5
CDR
9
Test
12
Prop I&TSC Structure
Del
9
Ship Propulsion Sys tem to I&T
1
SC Sim for ICDH LabSC Sim for ISIM SDL
5
ETU ISIM I&TType 1A
9
IES SDL
10
Flt ISIM (Type 2A)
3
IESEM TB
3
IES O TB
2
Bld 1 PDR
6
Bld 1 CDR/ Bld 2 PDR
6
Bld 2 CDR
8
Bld 1 TRR
9
Bld 2.1 TRR
7
Bld 2.2 TRR
2
FSW Del to SC
9
FSW Del to O bs
4
B 1.3
9
B 1 Update
12
B1 Verif 9
B 1 Val Start
11
B 2.1 Verif 3
B 1 Val Cpt
10
B 2.2 Verif 10
B 2.1 Val Cpt
3
B 2.2 Val Cpt
4
O bs Verif 9
O bs Val
3
ISIM CDR
7
Rec Structurefrom ATK
Structure Ac ceptance Tes ting
7
Start I&T
9
O SIM
4
PER
5
StartCryo 1
1
StartCryo 2
6
Reserve
8
Del Flt ISIMto O TE
10
CDR
2
ETU De l
1
Flt Del
1
STM Del
1
Flt Del
2
ETU De l
3
Flt Del
3
TFI/Systems CDR
2
ETU De l
1
Flt Del
2
PDR
6
CDR
6
Fit CheckCHA
10
FlightCHA
1
EM CTA
5
CCA M ock-up
6
CCES/ CELS
7
Flight CTA
5
FlightCCA/CCE
5
FlightCCA/CCE
(spare)
9
CCTS B2.1
5
CCTS B2.2
9
S&O CPDR
10
CCTS B2.3
6
S&O C Rel 0.0
10
CCTS B 2.4
10
S&O C CDR
12
S&O C Rel 1.0
7
S&O C Rel 2.0
12
O TB Del
1
S&O C Rel 2.x
12
Start " on ca ll" Support
Sunshield (SS)
Evolutionary Pathfinder (EPF)
M ate O TE / ISIM /IEC to S/C
Membranes
4
M gm'tReserve
SC Bus Fab & Assembly
1/3 Scale Sunshield
Rev-I DRAFT
3
Slack
3
Slack
10
General: All observatory components have successfully completed their preliminary design reviews ISIM CDR held in March
All science instruments have successfully completed their critical design reviews Optical Telescope Element (OTE) CDR held last October Sunshield CDR scheduled for January 2010 Launch Readiness Date is June 2014 and the Mission Critical Design Review is in April 2010
Observatory: Completed the spacecraft bus PDR Completed the JWST full scale core test Completed the 1/3 Scale Sunshield testing
Optical Telescope Element: Backplane:
Bonding of flight and pathfinder OTE Primary Mirror Backplane Support Structures (PMBSS) continues
Center section of the pathfinder completed bonding in December Completed the Flight Backplane CDR
Project StatusProject Status
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Full Scale Core Test HardwareFull Scale Core Test Hardware
Core Thermal TestFocus Area
Optical Telescope Element
Sun ShieldSpacecraft Bus
Decagon Test Membrane
SS Support Frame
Top Weldment
Base Weldment
Bus Simulator
IEC
PTR Radiators
Lift Sling
Backplane Support Frame (BSF)
Membrane Tensioning System
Center Backplane
Stray Light Bib
Diagonal Shields
Deep Space Edge Radiator (DSER) Panels
Cable Radiator
Counterbalance Weights
FLIGHT Observatory
CORE TEST thermal facsimile
Core Test Article Testing is CompleteCore Test Article Testing is Complete
Core Test integration complete– OTE/SC assemblies mated– GSFC radiometers received and installed– He shroud installed, leak checks completed– MLI closeouts complete– Instrumentation installation and checkout complete
Cool down started on April 17th
Competed testing on May 26th Data analysis is complete
Core Test Article
Installation on Chamber Lid
He Shroud Installation
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1/3 Scale Sunshield completed testing in December1/3 Scale Sunshield completed testing in December
Telescope Pathfinder and Flight structure at ATKTelescope Pathfinder and Flight structure at ATK
14
Primary Mirror Segment StatusPrimary Mirror Segment Status
A2, A4 and B3 during Integration for Cryo Test #2 in the XRCF, August,
2009
18 Flight PMSAs (6 A, 6 B, and 6 C segments) are at various stages of completion
– All segments have completed the surface grinding processes at Tinsley
– All but 5 segments have completed the rough polish process at Tinsley
– 16 flight mirrors have been shipped to Ball from Tinsley for configuration changes, assembly integration and testing
– 4 flight mirrors have been at the XRCF for Cryo Deformation Testing
– Next Cryo Deformation test with 5 flight and the completely polished ETU mirrors is scheduled to start in early January
– A1 is the first flight mirror in Cryo Null Polishing, now at Tinsley
Mirror Processing at TinsleyMirror Processing at Tinsley
EDU preparing for final polish runEDU preparing for final polish run EDU in Optical TestEDU in Optical Test
C4 in Flipping FixtureC4 in Flipping Fixture TM in Optical TestTM in Optical Test
A2, A4 and C3 PMSA’s at the MSFC XRCFA2, A4 and C3 PMSA’s at the MSFC XRCF
EDU PMSA Completed Final Polishing at Tinsley!EDU PMSA Completed Final Polishing at Tinsley!
EDU PMSA in it’s Shipping ContainerEDU PMSA in it’s Shipping Container
Status of Secondary, Tertiary and Fine Steering MirrorsStatus of Secondary, Tertiary and Fine Steering Mirrors
Secondary Mirrors– EDU SM is in final testing at BATC and is scheduled for delivery as a pathfinder in March
2010– Flight SM is in initial rough polishing at Tinsley, pre-cryo testing
Tertiary Mirror– Flight TM has completed cryo and integration deformation testing at BATC– Flight TM has begun Cryo Null Polishing at Tinsley
Fine Steering Mirror– Flight FSM has successfully completed cryo deformation testing at BATC; the null figure
polishing target map is being developed– Cryo Null Polishing of the Flight FSM is scheduled to begin next at Tinsley
EDU SM
TM
FSM
Secondary Mirror (SM) in cryo testing at BallSecondary Mirror (SM) in cryo testing at Ball
Mirror Status at TinsleyMirror Status at Tinsley
As of 11/30/09
TM1
EDU
SM1
Pathfinder EDU Flight Flight
C7
LEGEND
Not at L-3 SSG-Tinsley
Even Slice
Figure Grind
Smooth Out Grind
Rough / Smooth Out Polish Interleave
Stability / Final Prep
Shipped to BATC
Cryo Null Figure
Final Optical Test
Delivered
– – – – – Pathfinder
C5
B8
C6
B3
C1
C2
A1
A6
A5
A2
C4
A3
A4
C3
B5
B6
B7
SM2
B2
FSM
Mirror coating will start at QCI this yearMirror coating will start at QCI this year
JWST Dedicated Coating Chamber Chamber and coating qualification on
schedule to support flight coating– FSM and TMA will be coated in Feb 2010– PMSA EDU will be coated in Apr 2010
GSE Mirror Support in Final Steps of Integration and TestGSE Mirror Support in Final Steps of Integration and Test
Coating Chamber Final IntegrationCoating Chamber Final Integration
Coating Chamber InstalledCoating Chamber Installed
Sunshield IVA Deployment TestingSunshield IVA Deployment Testing
Kapton Spring Under Load
Stored Sunshield IVA with the OTE SimulatorStored Sunshield IVA with the OTE Simulator
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Ground System: Thirty-two Common Command and Telemetry Systems (CCTSs) have been deployed
around the world to support ISIM, science instrument and spacecraft flight software development and integration and test activities
The JWST Certification Facility has been established to test and certify operations products (command procedures, onboard scripts, telemetry monitors, etc) for use before testing against engineering models and flight hardware
The Ka band upgrades required to support JWST L&EO and normal operations have been completed at the DSN Canberra and Goldstone sites; the Madrid site has been upgraded and is currently undergoing testing
Program Status and Recent Progress (Continued)Program Status and Recent Progress (Continued)
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Ground Segment: Science instrument teams around the world using their SITS and SIDU systems
Program Status and Recent Progress (Continued)Program Status and Recent Progress (Continued)
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Ground Segment: Observatory I&T Control Room at NGAS
Program Status and Recent Progress (Continued)Program Status and Recent Progress (Continued)
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Ground Segment: JWST Certification Facility
Program Status and Recent Progress (Continued)Program Status and Recent Progress (Continued)
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Integrated Science Instrument Module (ISIM)– Successfully completed ISIM Level CDR in March– ISIM structure delivered to the GSFC in August– ISIM Command and Data Handling (IC&DH) unit and Remote Services Unit (IRSU) making
good progress Instruments:
– MIRI- MIRI Verification Model (VM) completed it’s second cryo test- Selected flight and spare detectors and built into Focal Plane Module’s (FPM’s)- Instrument shield (for cryo cooler) concept baselined- Flight Model integration underway
– NIRSpec- Selection of flight detectors agreed to by NASA & ESA- Development Model (DM) cryo testing is complete; Successful Pre Ship Review held- Flight Microshutter Array and Control Electronics in final testing- Flight Model (FM) integration underway
– NIRCam- Selected flight detectors for NIRCam- Build up of the NIRCam Engineering Test Unit (ETU) well underway- Completed the Triplet bonded mount CDR and started bonding the brass board lenses
– FGS- FGS flight detectors (including the spare) have been selected- ETU integration is complete; environmental testing is underway- Flight Model integration underway
Program Status and Recent Progress (Continued)Program Status and Recent Progress (Continued)
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JWST Instrument Engineering, Verification and JWST Instrument Engineering, Verification and Development ModelsDevelopment Models
FGS EM integration is complete MIRI VM testing is complete!
NIRSpec DM testing is Complete! NIRCam ETU undergoing I&T
NIRSpec Flight Model started IntegrationNIRSpec Flight Model started Integration
NIRCam ZnSe & BaFl Brass Board Optics NIRCam ZnSe & BaFl Brass Board Optics successfully bonded in new mounts!successfully bonded in new mounts!
Flight ISIM Structure in the SSDIFFlight ISIM Structure in the SSDIF
ISIM Kinematic Mount InstallationISIM Kinematic Mount Installation
ISIM & OSIM Hardware in the SSDIFISIM & OSIM Hardware in the SSDIF
Support and Mobility for OSIM registration and Integration (SAMORAI). OSIM optical
bench is mounted in SAMORAI
ISIM Structure
HST VEST Equipment
Foreground: theodolites and metrology equipmentCenter-Left: OSIM optical components (wrapped)Background: ISIM Structure
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SES Shroud in GSFC Bldg 10 for ISIM TestingSES Shroud in GSFC Bldg 10 for ISIM Testing
Fabreeka Isolators
GIS
UG Flexures
He Shroud
SES
UG
ITP
Cryoset Test Configuration(some minor details not correct)
ITP
He Shroud
Fabreeka Isolators
MGSE Installed in SES for ISIM Structure Cryotesting MGSE Installed in SES for ISIM Structure Cryotesting
Major near term reviews, tests and deliveries:
- Sunshield CDR scheduled for January 2010
- Start ISIM Structure cryoset test January 2010
- MIRI Structural Thermal Model delivery to GSFC in February 2010
- NIRSpec Engineering Model delivery to GSFC in February 2010
- FGS Engineering Model delivery to GSFC in March 2010
- Flight NIRSpec Micro Shutter Subsystem delivery to ESA in March 2010
- MIRI flight Focal Plane System (FPS) delivery to RAL in March 2010
- NIRSpec flight Focal Plane System (FPS) delivery to ESA in March 2010
- NIRCam Engineering Model delivery to GSFC in April 2010
- Mission Critical Design Review in April 2010
- IRSU Flight Model delivery in May 2010
- ISIM Flight Structure delivery to I&T in August 2010
- ISIM Electronics Compartment Flight Model delivery in August 2010
Major Near Term MilestonesMajor Near Term Milestones
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Successfully passed our Confirmation Review the Summer of 2008
Launch Readiness Date is June 2014
Engineering or Verification Models for the science instruments are complete or completing integration and test activities
They will be delivered to the GSFC over the next several months Integration of the flight instruments is underway
Continuing to make good progress on critical path items
Getting ready for our Mission CDR in April
Project SummaryProject Summary
ICDH ETU (Region 3)
Flight Structure
SM Hexapod
NS FPA Heatstrap
IEC Shell in Fabrication
Kinematic Mounts
NS Flight Integration
ISIM Under ConstructionISIM Under ConstructionISIM Under ConstructionISIM Under Construction
IRSU FLT Chassis
MIRI VM
FGS ETU
IEC Prototype Baffles
NIRCam ETU Bench
Primary Mirror Segment
Secondary Mirror SegmentMembrane mgmt
Mid-boom Test
ISIM Flight Bench
PM Flight Backplane
SMSS Pathfinder Strut
SM Hexapod
IC&DH unit ETU
Tertiary Mirror
Fine Steering Mirror
Pathfinder membrane
JWST Under ConstructionJWST Under ConstructionJWST Under ConstructionJWST Under Construction
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