GLAST LAT Project
February 2005
15 Feb 2005
Environmental Test Planning Meeting
Final—including inputs from meeting
18 Feb 2005
Systems Integration
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GLAST LAT Project
February 2005
Schedule
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8:30 am Review proposed test sequence
9:15 am Walk through test sequence to flesh out details
9:30 am Post-Ship and Sine Vibe
10:15 am EMI/EMC
11:00 am Acoustic
11:45 am Lunch
1:00 pm Thermal-Vacuum
2:00 pm Work out development plan and timeline (make a plan for the plan, with dates)
3:00 pm Lay out plan-forward for next 6 weeks
3:30 pm Close
Systems Integration
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GLAST LAT Project
February 2005
Environmental Test Planning Meeting
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Increased Systems involvement
– Martin Nordby and Rich Bielawski have taken on the role of coordinating the planning for
environmental testing
– This supports I&T both with systems engineering technical input and with the additional
warm bodies to aid them with long-term planning while they are focused on the
immediate integration tasks at hand
Test Directors identified
– Sine Vibe/(Modal Survey): John Ku
– EMI/EMC: Michael Lovellette
– Acoustic: John Ku
– Thermal-Vacuum: Jack Goodman (with Martin Nordby)
– High-Bay Tests: Paul Dizon
– Functional test coordination: Rich Baun
– Facilities: Bill Raynor
– Logistics: Martin Nordby
– Data Systems: Brian Grist
Systems Integration
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GLAST LAT Project
February 2005
Agenda
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Review proposed test sequence
– Current 408 baseline
– Proposed sequence
– Rationale for new sequence
Walk through test sequence to flesh out details
– This includes walking through the entire sequence of events, including moving, packing,
storing, etc
– Identify as many as possible of the issues that need working out and develop a more
complete list of actions needed for each test.
– See the following charts for information/issues/actions to be captured for each test
Work out development timeline
– Walk through framework of timeline
– Add detail for working down issues and generating test plans
– Add Pathfinder to schedule
Next Step
– Subcommittee meetings to work down actions and issues for individual tests
– “General Specifics” meeting at NRL in early-to-mid-March—work facility, logistics, and
pathfinder issues, plus get reports from Test Directors on subcommittee actions
Systems Integration
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GLAST LAT Project
February 2005
Current Baseline I&T Sequence (From LAT-MD-00408)
LAT
Integration
Tower
Integration
Environmental Tests
Integrate
TKR/CAL &
TEM's with
Grid
CAL
Grid
E
F
TEM/PS
O
Survey
Modal
survey
C
Handover
M Survey
A
C
F
EPU
Install
Radiators
Integrate EMI Skirt &
E-Boxes w/ Grid
EMI Shield
A
SIU
C
E
F
C
O Survey
PDU
Thermal Vacuum
TKR
Observatory
Integration
LAT Test
Store
LAT?
L Balance
Y
N
Storage
Cycling
M L
C
L
M
Survey
EMI/EMC
GASU
Integrate
Htr switch
boxes
E
Htr Switch Box
F
X-LAT Plate
F
E
Remove
Radiators
Weight
L Sine Vibe
Integrate
F
ACD
E
L
Remove
Radiators
O M Survey
ACD
LAT
Integration
C
M Survey (2)
L
Install
Radiators
Integrate
X LAT Plate
O
Environmental
Weight & CG
Ship to
NRL
C
C
M
Final
L
C
Ship to
SA
L Acoustic
O
Survey
C
Mechanical
Fit-Checks
@ Spectrum Astro
Radiators
E
Electrical
InterfaceTests
@NRL
A
Aliveness
Tests
Survey:
Systems Integration
Functional
Tests
F
O
Optical
L
M
Muon
Limited
Performance
C
Comprehensive
Performance
v5 post CDR 11/30/03
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GLAST LAT Project
February 2005
Comparison of Baseline with Proposed New Baseline
Baseline Sequence from LAT-MD-00408
Receive,
Unpack
Modal
Survey
C
EMI/
EMC
Install
Radiators
C
Survey
T-Bal
M
L
Sine Vibe
Remove
Radiators
T-Cycle
C
M
L
Survey
L
Remove
Radiators
C
M
Acoustic
Install
Radiators
C
L
Weight,
CG
Ship to
GD
Proposed New Baseline Sequence
Receive,
Unpack
C
Reference CPT
Performed at SLAC
Sine Vibe
L
L
Modal
Survey
T-Bal
Aliveness
C Limited Performance
A
Comprehensive Performance
M Muon Survey
C
Systems Integration
L
Install
Radiators
T-Cycle
C
M
L
L
C
EMI/EMC
L
Acoustic
C
L
L
Weight,
CG
Remove
Radiators
A
Pack LAT
Ship to
GD
Final CPT
Operations Saved
Survey
Survey
M
M
Install
Radiators
C
Remove
Radiators
C
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GLAST LAT Project
February 2005
Rationale for Revising Test Sequence
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Improved Radiator installation sequencing
– The new test sequence removes one full cycle of installing/removing the Radiators
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This is a higher-risk activity that is expected to be hard to do
The revised sequence is expected to allow us going directly from acoustic to thermalvacuum testing without removing the Radiators
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This ensures that the Rad-Grid thermal joint is tested exactly as it will fly
This is the only way to verify in thermal-vac that the joint can sustain launch acoustic loading
without detrimental impact on its thermal performance
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The revised sequence will require that the MGSE can accommodate the LAT with
Radiators on during the transition from acoustic to thermal-vacuum testing
Ensures that dynamics testing retires risks early
– Sine vibe: this will be done first, and will allow us to check LAT modes early. If modal
survey is needed, it will allow the most time to develop contingency plans
– Acoustic: this is done after EMI/EMC, to ensure that any add-on EMI shielding is
included in the acoustic test
Preserves late thermal-vacuum testing
– Thermal-vacuum testing is still performed last, to provide a perceptive check that
dynamics testing did not produce any thermal problems at our many bolt-up joints
Next Step
– Work to the proposed sequence in planning tests and working actions
– Initiate CCB, update -408 document and revise LAT baseline test sequence
Systems Integration
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GLAST LAT Project
February 2005
Environmental Test Punch List: Test Plan
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Objective
Test Plan
– Completed test plan describing technical details of the test
– List of instrumentation needed to accomplish test goals
– Data products format, quantity, and quality
– Entrance/exit criteria for test (on-site or SLAC review)
Test personnel (at SLAC and NRL)
– Test director, test conductor, discipline lead, facility manager, other people involved
(MGSE, EGSE, test scripts, etc); get phone/cell numbers, e-mails; ultimately, this includes
all needed test personnel
– Define a subcommittee to work issues for this test
Test requirements
– Requirements flowing from the Test Plan and/or verification needs that impact any aspect
of the test set-up
– Includes facility needs, MGSE constraints
Description of activities
– Sequence of tasks with enough detail to identify all work and the order in which it must
be completed
– This becomes input into LAT Environmental Test Sequence document
Systems Integration
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GLAST LAT Project
February 2005
Environmental Test Punch List: Test Configuration
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Mechanical configuration
– Orientation in room and wrt gravity
– Personnel access needs around LAT
– MGSE requirements: support, cooling, stability
– MGSE design
Electrical configuration
– Facility data acquisition equipment needed, interfaces, channel counts, read-outs and
data transfer/storage needs
– LAT EGSE needed
– Physical location and footprint of LAT EGSE, communications needs/data flow, cooling
needs, weight, power needs
– Cabling and cable lengths (including for pre-/post-test set-ups), cable penetrations
available and needed
– Cabling and EGSE configurations before, during, and after test
– Result should be Electrical Configuration Diagram
Procedures
– List of procedures needed to complete the entire operation
– Includes handling, contamination, and other “generic” procedures
Systems Integration
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GLAST LAT Project
February 2005
Environmental Test Punch List: Test Logistics
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Test facility
– Layout of facility including floor plan, entrance, penetrations for cabling, crane access
– Power in/around test facility, power stability, UPS capability
– Communications availability
Logistics
– How to move in and out of chamber
– Required pre-test checking/test runs of LAT EGSE and facility data acquisition system
– How to set up LAT for test; surveying/alignment of LAT or test apparatus
– Cleanliness; flight hardware protection
– Personnel protection, access, and workspace needs and availabilities
– Timing and duration of test set-up, execution, and tear-down
– Contingency plans
Test Prerequisites
– Training and certification requirements (e.g.: contamination, ESD)
– Structural oversight: proof tests, MGSE safety review, third-party engineering review,…
– Calibration: LAT EGSE and facility data acquisition system calibration status
– QA support: SLAC and/or NRL QA support needs, NCR/PFR system, QE specialist
oversight
– Safety: safety reviews, safety oversight
Issues list
– Generate a list of issues and actions, including priority and need dates
– Identify long-lead items
Systems Integration
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GLAST LAT Project
February 2005
Test Personnel
Test Personnel
Test Director
High-Bay
Paul Dizon (NRL)
Test conductor
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Sine Vibe
John Ku (SLAC)
Bob Haynes (NRL)
EMI/EMC
Micheal Lovellette
(NRL)
Mike Obara (NRL)
John Ku (SLAC)
Rich Bielawski
Jim Haughton (NRL) (SLAC)
Discipline leads
Acoustic
John Ku (SLAC)
Bob Haynes (NRL)
T-Vac
Jack Goodman (SLAC),
Martin Nordby (SLAC)
Mike VanHerpe (NRL)
John Ku (SLAC)
Jim Haughton (NRL)
Jeff Wang (LM)
Chris Fransen (GSFC)
MGSE Lead
EGSE Lead
Mike Huffer (SLAC) Mike Huffer (SLAC) Mike Huffer (SLAC) Mike Huffer (SLAC)
Test Software
Mike Huffer (SLAC)
Rick Claus (SLAC)
•Test Director: overall test planning; write test plan document and test procedures; manage pre-test analyses
•Test conductor: review test procedures; execute test; collect test data
•Discipline leads: support test planning; perform pre-test analysis; support STE development; monitor testing;
perform post-test data reduction and write test report
•MGSE lead engineer: design MGSE/STE for test; support mech aspects of test planning
•EGSE lead engineer: design EGSE and cabling; develop elec config diagram; support functional test planning
•For All Tests:
•Logistics lead: Martin Nordby
•Facilities lead: Bill Raynor
•Functional test coordinator: Rich Baun
•Data systems coordinator: Brian Grist
Systems Integration
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GLAST LAT Project
February 2005
Environmental and Performance Test Sequencing
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Reference CPT
– Performed at SLAC prior to shipping
Receiving and Prep
– CPT: establish instrument health prior to start of env testing
Sine Vibe Test
– LPT: on table, prior to start of test
– Z-axis vibe
– LPT: on table, prior to Z-axis tear-down
– X-axis vibe
– LPT: on table, prior to X-axis tear-down
– Y-axis vibe
– LPT: on table, prior to removing LAT
Install Radiators
– LPT: after both Radiators are installed
EMI/EMC Test
– LPT: in anechoic chamber, prior to test
– Diagnostic testing during test
– LPT: after test, before breaking config
Acoustic Test
– LPT: in acoustic chamber, prior to test
– Acoustic test
– LPT: in acoustic chamber, prior to removing LAT
Systems Integration
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GLAST LAT Project
February 2005
Environmental and Performance Test Sequencing (cont. 1)
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Thermal-Vacuum Test
– CPT: in t-vac chamber, prior to door closing
– SVAC/Muon survey: in t-vac chamber, prior to door closing (?)
– Pump down and bake out
– Hot survival: turn-on (Aliveness Test?)
– Thermal-balance hot: TCS Perf, LPT
– Cold-survival: heater check test, turn-on (Aliveness Test?)
– Thermal-balance cold: TCS Perf, LPT
– Thermal cycle hot (1): CPT
– Thermal cycle cold (1): CPT
– Thermal cycle hot (2): LPT
– Hot plateau: Muon survey
– Thermal cycle cold (2): LPT
– Cold plateau: Muon survey
– Thermal cycle hot (3): LPT
– Thermal cycle cold (3): LPT
– Thermal cycle hot (4): CPT
– Thermal cycle cold (4): CPT
– Return to ambient, vent chamber
– CPT: in t-vac chamber, after venting and opening doors
– SVAC/Muon survey: in t-vac chamber, after venting and opening door
Systems Integration
13
GLAST LAT Project
February 2005
Environmental and Performance Test Sequencing (cont. 2)
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Remove Radiators
Weight and C.G. Measurement
Pre-Ship Review
Pack LAT and Ship
– Pack into shipping container
– Aliveness Test
– Ship to GD
Systems Integration
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GLAST LAT Project
February 2005
Development Timeline
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Feb 14: Lay out test action items; personnel
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Mar 1:
Mar 14: Meet at NRL for working test detail plans  convened by Test Directors
Mar 21: Complete clean drafts of Test Plans; collect Punch List information
Apr 1: Complete loop-back testing in NRL T-vac chamber
Apr 15: Env Test planning review
May 1: Release Test Plan documents
May 15: MGSE drawings complete  out for fabrication
Jun 1: Lay out Pathfinder program and designs
Jun: build Pathfinder hardware and draft procedures
Jul 1: Start Pathfinder through Env Test sequence
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Aug 1: Test STE assembly starts at SLAC
Complete Pathfinder work
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Sep 1: Complete Pathfinder program; update draft procedures
Sep 15: Test STE arrives at NRL for test prep’s
Complete drafts of all procedures (finals for handling, sine vibe)
Oct 1: Env Test Readiness Review
Oct 15: LAT PSR at SLAC  get OK to ship
Nov 1: LAT at NRL to start testing
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Systems Integration
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