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

2

MISSION STATUS

3

OTIS

OPTICAL TELESCOPE

ELEMENT/INTEGRATED SCIENCE

INSTRUMENT MODULE)

+

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

9

SPACECRAFT ELEMENT

(SCE)

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

14

GROUND SYSTEM AND

OPERATIONS

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

17

JWST Mission Operations Center

18

WHAT’S NEXT

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

20

SCHEDULE STATUS

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

23

CLOSING REMARKS

24

Progress Continues To Be Made Across All

Aspects Of JWST, But We Are Now In The

Most Challenging Phase

It’s All About Schedule!

Closing Remarks