Transcript Design Integration and Analysis

GLAST LAT Project
1 Sep 2005
LAT Monthly Status Review
1 Sep 2005
Design Integration and Analysis
Martin Nordby
LAT Design Integration and Analysis
John Ku
Jack Goodman
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GLAST LAT Project
1 Sep 2005
Design Support Status
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Flight/fly-away hardware designs (all remaining hardware listed)
– MLI blankets: draft drawings still out for check
– External fly-away instrumentation cables: layout complete
– TKR accel mount bracket: drafts complete, waiting to send out for check
Assembly drawings (all remaining assembly drawings listed)
– LAT-DS-06721 External Cable Installation Kit
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LAT-DS-02563-01 LAT Instrument Assembly
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First draft bill of materials complete; drawing in internal check
LAT-DS-01624-01 LAT Top Assembly
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First draft bill of materials complete; drawing in internal check
Model up-to-date, but drawing not yet started
Interface Drawings
– All interface drawings released and up-to-date with no known liens
LAT Design Integration and Analysis
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GLAST LAT Project
1 Sep 2005
Integration Planning
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LAT Integration Sequence (LAT-MD-00676-04)
– Updated rev put in release cycle this month—includes early ACD, SIU integration and
FSW testing
Configuration drawings
– LAT Instrument Configuration Assembly
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Drawing complete—waiting internal checking
Integration MGSE (all remaining integration MGSE listed)
– ACD Lift Fixture
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Drawings completed this month—drawings released, with 4 rev’s in release cycle now
Design review held this month
EM-SIU Mount Plate
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Drawing released this month
LAT Design Integration and Analysis
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GLAST LAT Project
1 Sep 2005
Environmental Test Planning
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Current focus is to complete all Plan-level documents by the end of August
– All Test Plans are out in the release cycle
Next step (Aug-Sep)
– Develop procedure list—being prepared for NRL F2F on Sep 7
– Complete MGSE designs—in progress; see status chart
– Start drafting procedures—not started yet
– Finalize NRL logistics plans—Implementation Plan draft being prepared for NRL F2F
– Develop Pathfinder plans for prototyping at NRL in November—pathfinder activities
identified; plans to be discussed at NRL F2F
Pathfinder (Oct-Nov)
– Complete all procedures that are needed for Pathfinder
– Walk through procedures using real MGSE hardware at NRL
– Update procedures based on Pathfinder experiences
– Release procedures prior to TRR and LAT shipment
LAT Design Integration and Analysis
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GLAST LAT Project
1 Sep 2005
Environmental Test: Plan-Level Documents and Status
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The following documents (in total) form the technical bases for LAT environmental testing
Document
Title
Status
LAT-MD-02717-01
LAT Environmental Test
Sequence
LAT-MD-01196-03
LAT Dynamics Test Plan
In release cycle
LAT-MD-00276-02
LAT EMI/EMC Test Plan
In release cycle
LAT-MD-01600-03
LAT Thermal-Vacuum
Test Plan
LAT-SS-06640-01
LAT Environmental Test
MGSE/STE Requirements
In release cycle
LAT-PS-06898-01
LAT Environmental Test
Implementation Plan
Updated draft out for review
Subject of F2F meeting at NRL on Sep 7
LAT-MD-06560-01
Plan for Integrating and
Testing the LAT on the
Observatory
Sent to Spectrum, GSFC for review
Subject of F2F meeting at Spectrum Sep 12
LAT Design Integration and Analysis
ECD
Released
Released
Rel: mid Sep
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GLAST LAT Project
1 Sep 2005
Environmental Test: Configuration Drawings and Status
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These show flight hardware and MGSE/STE in their test configuration
– Includes all information needed to support test set-up procedures
– Shows all mechanical test and handling equipment that is used for the test
Configuration Assemblies being worked in conjunction with finalizing MGSE designs for the
tests
Drawing
Title
Status
ECD
LAT-DS-06186
Handling Configuration Assembly
First draft completed in July
Drafint on hold (3rd priority)
LAT-DS-06184
Transport Configuration Assembly
Waiting Transport Container final design
Late Sep
LAT-DS-06187
Horizontal Vibration Test
Configuration Assembly
Modeling completed in Aug
Drafting on hold (2nd priority)
Late Sep
LAT-DS-06190
Vertical Vibration Test
Configuration Assembly
Modeling completed in Aug
Drafting on hold (2nd priority)
Late Sep
LAT-DS-06189
EMI/EMC Test Configuration
Assembly
Modeling completed in Aug
EGSE cable lengths worked—to be
checked at NRL F2F
Drafting on hold (3rd priority)
Mid Oct
LAT-DS-06188
Acoustic Test Configuration
Assembly
Modeling completed in Aug
MGSE design in work
Drafting underway (1st priority)
Mid Sep
LAT-DS-06185
Thermal-Vacuum Test
Configuration Assembly
Thermal STE design complete
(review planned for NRL F2F)
Drafting underway (1st priority)
Mid Oct
LAT Design Integration and Analysis
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GLAST LAT Project
1 Sep 2005
Environmental Test MGSE/STE
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Transport Container
– NRL working on retrofitting a surplus container
– Design review planned for NRL F2F on Sep 8
Test Interface Plate
– Assembly work started at SLAC—needed for Grid2 static load test
Test Stand/Spreader Bars
– Drawings completed in August
– Assembly and proof test plans completed in August
– Structural analysis completed in August
– Final Design Review held on Aug 25
– RFP out on street now
T-Vac Sink Plates and Cal-Rod Cage
– Thermal and electrical design completed in August
– Mechanical design complete—review planned for NRL F2F
Acoustic Simulator
– Conceptual design completed in August
– Working details to ensure correct acoustic response
– Detailing should be completed in mid-Sep
LAT Design Integration and Analysis
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GLAST LAT Project
1 Sep 2005
Structural Analysis: Accomplishments
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LAT System Level
– Grid Static Load Test (GSLT)
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I T
Continued LAT Environmental test planning
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Finalized Grid static test load cases and instrumentation points – inputs given to NTS
TIP Proof test load cases defined and instrumentation points– inputs given to NTS
Worked out several practical issues with I&T regarding GSLT
Dynamics Test Plan in release cycle
LAT Subsystem Level
– MGSE
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TKR Subsystem
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No activity
Mechanical Subsystem
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Test Stand analysis and report complete – review held, some action items to address
Test Interface plate analysis and report complete – review held, with no action items
ACD Lift Fixture analysis and report complete – review held
Supported Radiator acoustic test – hardware passed without issue; qual levels achieved
EBOX Subsystem
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No activity
LAT Design Integration and Analysis
D = Flight Design
I = Integration Prep
T = LAT/SS Test Prep
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GLAST LAT Project
1 Sep 2005
Structural Analysis: Near-term Milestones and Status
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LAT System Level
– LAT Static Testing
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LAT Dynamics Testing
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Update LAT vibration test predictions – ECD = 10/15/05
Support Pathfinder activities at NRL – ECD = ongoing through Nov 2005
Continue planning with I&T and NRL for LAT environmental testing – ECD=ongoing through test
MGSE for I&T: augment MGSE analysis with additional I&T needs, as required
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Complete Pre-test analysis: predictions, fixture evaluation, hold TRR – ECD = 9/9/05
Support testing in third week of September – ECD = 9/19/05 – 9/30/05
Complete Test Stand review action items
LAT Subsystem Level
T– TKR Subsystem
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Mechanical Subsystem
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Continue to support tower testing by phone – ECD = ongoing through last Tower test
Support radiator static tests @ SLAC – ECD = TBD
EBOX Subsystem
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Complete TEM/TPS Vibration test report
Support GASU and PDU Protoflight tests
D = Flight Design
I = Integration Prep
T = LAT/SS Test Prep
LAT Design Integration and Analysis
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GLAST LAT Project
1 Sep 2005
Thermal Engineering Activities – Completed
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Design Engineering and Support
– N/A
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LAT Level Thermal Analysis and Tests
– LAT TVAC S/C bus simulation, ACD and radiator sink plates heater circuit design finished
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Subsystem Support and Oversight
– Supported TKR 7, 10 TVAC test at Alenia, 31 July – 6 August
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LAT Thermal Control System
– Radiators connected with Radiator Control and Monitor Console and checked out for TVAC
test.
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Lockheed Thermal Control System Hardware
– Radiators integrated onto test stand and installed into LM Delta chamber
LAT Design Integration and Analysis
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GLAST LAT Project
1 Sep 2005
Thermal Engineering Activities – Current
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Design Engineering and Support
– Environmental Specification – change Tracker Acceptance Level Tests (35C to 45C)
– Reviewing electrical grounding scheme for MLI blankets with NASA/GSFC
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LAT Level Thermal Analysis and Tests
– Thermal math model for LAT TVAC Test almost complete—LAT support stand GSE will be
incorporated into model when time becomes available (after radiator/TCS protoqual
tests–end of August)
– Modification of orbit thermal model to predict ground operation temperatures with
integrated ACD
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Subsystem Support and Oversight
– Planning for TKR TVAC support: TKR 11 & 12 week of 5 Sept and TKR 13 & 14 week of 12
Sept.
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LAT Thermal Control System
– RCMC is currently being used in Radiator/TCS Protoqual test.
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Lockheed Thermal Control System Hardware
– Radiator/TCS Protoqual Test in progress; hot performance and cold survival test
segments completed. TVAC test
LAT Design Integration and Analysis
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GLAST LAT Project
1 Sep 2005
Thermal Engineering Activities - Planned
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Design Engineering and Support
– Complete detailed MLI design
– Review, then fabricate MLI blankets; two sets, one set for tests and other for flight
LAT Level Thermal Analysis and Tests
– Thermal Math Model, Ver. 6.1, reduced node
– Thermal Math Model, Ver. 6.2, LAT TVAC test configuration
– Document analysis of LAT transition from Survival to Operating Mode
– 200 Node Launch Vehicle Thermal Math Model
– Develop refined ground cooling scheme for LAT with light-tight shield and integrated
ACD
Subsystem Support and Oversight
– Support TVAC tests of all eboxes
– Support TVAC tests of TKR 11 - 14
LAT Thermal Control System
– Preliminary verification during LM Radiator Protoqual Tests, now in progress
– TCS verified in LAT TVAC tests at NRL
Lockheed Thermal Control System Hardware
– Complete radiator TVAC test and deliver to SLAC
LAT Design Integration and Analysis
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