1
James Webb Space Telescope
Mission Status
Bill Ochs
JWST Project Manager
NASA Goddard Space Flight Center
29 July 2011 1
Launch Vehicle TIMApril 10-11, 2017
https://ntrs.nasa.gov/search.jsp?R=20170003424 2018-06-08T00:47:22+00:00Z
4
Ship AOS
to GSFC
Receive
AOS at JSC
OGSE2 Prep
OGSE2 Test
PF Thermal
Prep
PF Thermal
Test
JSC
Chamber
Ready
Install
Flight
ISIM to OTE
Pre Envi-
ronmental
Test
Acoustic
& Vibe
Tests
Post Envi-
ronmental
Test
Ship OTIS
to JSC
Receive
OTIS
at JSC
OTIS Cryo
Preps
Ship OTIS
to NGAS
OTIS Cryo
Test
OTIS Cryo
Post-TestFlight OTIS I&T
Receive
PF at JSC
OGSE1 Prep
OGSE1 Test
JWST OTIS Integration and Test
Prep for
OTIS Test Risk Reduction ActivitiesGSE &
Test Prep
Fall 14 Fall 17
Facility
Functional
Clean
RoomMGSE
InstallBakeout
Commi-
ssioning
Phase I
MGSE
Inspection,
OGSE Install
Commi-
ssioning
Phase II
GSE & Test Preparations
Fall 14Completed
Aug 12
Acronym
sAOS
GSE
MGSE
NGAS
OGSE
PF
Aft-Optics Subsystem
Ground Support Equipment
Mechanical Ground Support Equipment
Northrop Grumman Aerospace Systems
Optical Ground Support Equipment
Pathfinder
Legend
Functional / Test
DeliveryAssembly / Integration
Prep & Transport
✔ ✔ ✔ ✔ ✔ ✔ ✔
✔ ✔ ✔ ✔ ✔ ✔
Where Are We In OTIS Flow
✔✔
✔✔ ✔
✔
5
At GSFC:
OTIS Integration Complete
Pre-Environmental Center of
Curvature (COC) complete
Vibration and Acoustics
Testing Complete
OTIS At GSFC
At GSFC:
Pre-Environmental Center of
Curvature (COC) and
Deployments In-Process
6
OTIS Vibration and Acoustics Completed
Vibration Testing
Largest and most dynamically
complex structure ever tested at
GSFC successfully completed
Acoustics Testing
Test was successfully completed
7
OTIS at JSC
All Risk Reduction Testing Completed
93 Day Flight OTIS Test This Summer!
Pathfinder test 1 Pathfinder test 2 Pathfinder test 3
Aft Optics System
Installed
Thermal hardware installed
Telescope Pathfinder
8
OTIS at JSC
Thermal
Pathfinder
Configuration
In Chamber A
JSC Readiness To Receive OTIS Review
successfully conducted – 3/15
Chamber meets or exceeds all
requirements to create a deep space
environment for meeting the optical
and cryogenic testing of OTIS
Cleanroom meets all contamination
requirements, and has emergency
power and full environmental back-
up system
Hurricane preparations have been
addressed and satisfied
Shipping OTIS to JSC early May
10
Where Are We In the Spacecraft Element Flow
20162015J an F eb Mar A pr May J un J ul A ug S ep Oct Nov Dec
2018DecJ un J ul A ug S ep Oct NovDec J an F eb Mar A pr MayJ un J ul A ug S ep Oct NovDec J an F eb Mar A pr MayJ un J ul A ug S ep Oct NovMar A pr May
2017J an F eb
6/2 5/2
Parallel SC Bus Tasks
CC
Bus/Prop
9/1
SC Bus Integration
7/12
6/21
Panel I&T
10/7
12/22
Membranes
Xducer Rework
11/19 12/26
10/12
SS Core
9/2
Core
9/28
Cryo-Cooler Mech Integration
Flight Battery
6/1 Propulsion Elect Integration Complete 5/9
2/15
AFT
DRSA
5/19
Membrane Install
& Fold
MB1
2/14
4/19 5/18
7/14
4/7
MidTip 2&1
DRSA-H
5/4
Propulsion Electrical
Ske
leto
n &
Sto
w
SS Deploy, Fold & Stow
7/16
3/14
11/14
TV
Pre
ps
12/1
Post-Env Deploy &
Test J2 P
anel
Clo
se/T
est
8/14
TV Test
9/7 10/14
TV D
e-P
reps
10/25
EM
C
3/28
CST-1
Xduce
r W
305
1/6 1/28 2/8 2/23
CCA I
nte
g
& E
MC C
E
Xduce
r Rew
ork
/
Rete
st
7/16
10/25
PAF S
hock
Aco
ust
ics
Vib
e
S/A
DSN
Com
p
4/1
3/28
MB2 4/8 M
id T
ips
Pre
p
AFT/F
WD
Inst
l
6/5
OBS I&T Start
11/15
3/15 Solar Array
3/15
SN
Com
p
MRE TCAs
FWD
3/22 & 3/23
MB2 P
rep
MB2 &
Tip
s
6/9
FW
D/A
FT P
rep
Skele
ton &
Ele
ct
MB1
Inst
all
5/18 6/19
Pro
p F
unct
Modal
3/10
11
Sunshield Status
• Sunshield deliveries to I&T have started
• Hub/Rim installed on bus
• 1 of 2 Mid-boom assemblies delivered and installed
• Forward and Aft UPS Assemblies – complete
• Second Mid Boom and Mid-Tip assemblies by early April
• DRSA-H – by mid-April
Aft Assembly Complete
DRSA-H Deployment
Testing
MTS Vibration
and Functional
Testing
12
Spacecraft in I&T
Solar panels in production
• Spacecraft bus level mechanical integration
complete.
• Sunshield Hub/Rim installed.
• +/-J panels are closed
• Install antenna assembly
• Completed Conducted Emissions
• Installed Flight Mid-Boom Assembly 1
• Comprehensive System Test (CST) #1 in May
Spacecraft – panels ‘tailgated’, Sunshield Hub/Rim Installed
Spacecraft – closing of –J2 panel
MBA FM1 (+J2) Installed
13
Spacecraft in I&T
Cooler Compressor Assembly
Installation
Flight
Battery –
ready for
storage
Antenna Assembly – range of motion testing
Solar Array Delivery
Solar Array delivered to I&T
SCE with EMC Tent in background
15
Science and Operations Center (S&OC)
All Observatory Control, Science Planning, And Science Data
Processing Operational Systems Are On Schedule
S&OC subsystems have been and will be used to support Integration and
Test:
• All subsystems will be exercised during OTIS JSC testing: Wavefront
Software Subsystem (WSS), Operations Scripts Subsystem (OSS),
Project Reference Database Subsystem (PRDS), Proposal Planning
Subsystem (PPS), Data Management Subsystem (DMS), Flight
Operations Subsystem (FOS)
Continuing to conduct S&OC interface testing over operational networks
• Successful tests with Deep Space Network, Space Network, Flight
Dynamics Facility
• Testing with ESA Malindi ground station is in progress
Mature S&OC subsystems have been integrated into a single system which
enable the conduct of science
• Guaranteed Time Observer and Early Release Science Calls for
Proposals were released to the scientific community in January
16
Operations Preparations
Operational product development
well underway
ISIM, SC/OTE, Deployment, and
Operations Script Subsystems flight
procedure development is
proceeding on schedule
• Includes real time, standard
operating procedures and java
script development
Ops Products are used extensively
during Integration and Test
Commissioning Timeline Support Nominal timeline development well
underway with monthly management
reviews/training
Completed first phase of meetings to
review and analyze contingencies
during commissioning
• Emphasis now turning to
development of contingency
procedures, tools
FOT training FOT members have completed
required classroom training on
spacecraft, ISIM and science
instruments and ground elements
Preparations underway for first
Operational Readiness Exercise
(ORE-1) in May
19
JWST Road Ahead
OTIS Vibration (3 axes)
OTIS Acoustics
OTIS Deployment Optics Testing
OTIS Cryogenics (93 day cryo-vacuum test)
SCE Integration
SCE Electrical test
SCE Thermal Vacuum test
SCE Deployment
Observatory Vibration (3 axes)
Observatory Acoustics
Observatory Deployment (all deployments retested)
Observatory Integration
JWST Schedule
Feb 28, 2017
SC Fab/Assy/Test
SC
Struct
to I&T
CY 2011 CY 2012 CY 2013 CY 2014 CY 2015 CY 2016 CY 2017J
CY 2018F M A M J J A S O N DJ F M A M J J A S O N DJ F M A M J J A S O N DJ F M A M J J A S O N DJ F M A M J J A S O N DJ F M A M J J A S O N DJ F M A M J J A S O N DJ F M A M J J A S O N D J F M A M J
ISIM Envir Test/Detector C/O
ISIM & Instrument Fab/Assy/Test
Mirror Fab
Sunshield Design/Dwgs
LRD
SC Subsystem Development
ISIM Integ
Launch
Site
PCU/SAR
to SC I&T
PMSA Gear Motor Rework
CY 2019
Obs I&T
OTE Fab Assy & Test
Impact from GPM slipNeed SES For OSIM
SES Avail
Optics Integ
Cryocooler
CHA
SC Fab/Assy/Test
1
OTE
WSS
B5S&OC
Rel 2
4.75 Months of
Critical Path Reserve
Primary Critical Path – 4.75 mos
Secondary Critical Path – 4.75 mos
Tertiary Critical Path – 8.75 mos
Reserve
OSS
B4FOS
B5
Solar
Array
Mid Boom
#1
OTIS I&T
Ground Segment
Spacecraft Element I&T
3
Sunshield Mfg, Fab, & Test
.75
.75
4.75
22
Reserves
Large amount of schedule reserve was expended since due to Vibe and
Transducer Weld issue
Many complex integration activities (sun shield) and tests still lay before us
There will be delays due to the nature and complexities of the tasks ahead
The Big Question is “Do We Have Enough Schedule Reserve”
In the May/June time frame, Project will conduct a schedule risk assessment
to support providing an answer
Schedule