1. LAT Design Integration and Analysis1 GLAST LAT Project1 Sep 2005 LAT Monthly Status Review 1 Sep 2005 Design Integration and Analysis LAT Monthly Status Review 1 Sep 2005 Design Integration and Analysis Martin NordbyJohn KuJack Goodman

2. LAT Design Integration and Analysis2 GLAST LAT Project1 Sep 2005 Design Support Status 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 First draft bill of materials complete; drawing in internal check –LAT-DS-02563-01 LAT Instrument Assembly First draft bill of materials complete; drawing in internal check –LAT-DS-01624-01 LAT Top Assembly Model up-to-date, but drawing not yet started Interface Drawings –All interface drawings released and up-to-date with no known liens

3. LAT Design Integration and Analysis3 GLAST LAT Project1 Sep 2005 Integration Planning 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 Drawing complete—waiting internal checking Integration MGSE (all remaining integration MGSE listed) –ACD Lift Fixture Drawings completed this month—drawings released, with 4 rev’s in release cycle now Design review held this month –EM-SIU Mount Plate Drawing released this month

4. LAT Design Integration and Analysis4 GLAST LAT Project1 Sep 2005 Environmental Test Planning 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

5. LAT Design Integration and Analysis5 GLAST LAT Project1 Sep 2005 Environmental Test: Plan-Level Documents and Status DocumentTitleStatusECD LAT-MD-02717-01 LAT Environmental Test Sequence Released LAT-MD-01196-03LAT Dynamics Test PlanIn release cycle LAT-MD-00276-02LAT EMI/EMC Test PlanIn release cycle LAT-MD-01600-03 LAT Thermal-Vacuum Test Plan Released 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 Rel: mid Sep 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 The following documents (in total) form the technical bases for LAT environmental testing

6. LAT Design Integration and Analysis6 GLAST LAT Project1 Sep 2005 Environmental Test: Configuration Drawings and Status DrawingTitleStatusECD LAT-DS-06186Handling Configuration Assembly First draft completed in July Drafint on hold (3 rd priority) LAT-DS-06184Transport Configuration AssemblyWaiting Transport Container final designLate Sep LAT-DS-06187 Horizontal Vibration Test Configuration Assembly Modeling completed in Aug Drafting on hold (2 nd priority) Late Sep LAT-DS-06190 Vertical Vibration Test Configuration Assembly Modeling completed in Aug Drafting on hold (2 nd 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 (3 rd priority) Mid Oct LAT-DS-06188 Acoustic Test Configuration Assembly Modeling completed in Aug MGSE design in work Drafting underway (1 st priority) Mid Sep LAT-DS-06185 Thermal-Vacuum Test Configuration Assembly Thermal STE design complete (review planned for NRL F2F) Drafting underway (1 st priority) Mid Oct 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

7. LAT Design Integration and Analysis7 GLAST LAT Project1 Sep 2005 Environmental Test MGSE/STE 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

8. LAT Design Integration and Analysis8 GLAST LAT Project1 Sep 2005 Structural Analysis: Accomplishments LAT System Level –Grid Static Load Test (GSLT) 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 –Continued LAT Environmental test planning Dynamics Test Plan in release cycle LAT Subsystem Level –MGSE 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 –TKR Subsystem No activity –Mechanical Subsystem Supported Radiator acoustic test – hardware passed without issue; qual levels achieved –EBOX Subsystem No activity T IT T T D I T = Flight Design = Integration Prep = LAT/SS Test Prep I

9. LAT Design Integration and Analysis9 GLAST LAT Project1 Sep 2005 Structural Analysis: Near-term Milestones and Status LAT System Level –LAT Static Testing 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 –LAT Dynamics Testing 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 Complete Test Stand review action items LAT Subsystem Level –TKR Subsystem Continue to support tower testing by phone – ECD = ongoing through last Tower test –Mechanical Subsystem Support radiator static tests @ SLAC – ECD = TBD –EBOX Subsystem Complete TEM/TPS Vibration test report Support GASU and PDU Protoflight tests D I T T IT I T T T = Flight Design = Integration Prep = LAT/SS Test Prep

10. LAT Design Integration and Analysis10 GLAST LAT Project1 Sep 2005 Thermal Engineering Activities – Completed Design Engineering and Support –N/A LAT Level Thermal Analysis and Tests –LAT TVAC S/C bus simulation, ACD and radiator sink plates heater circuit design finished Subsystem Support and Oversight –Supported TKR 7, 10 TVAC test at Alenia, 31 July – 6 August LAT Thermal Control System –Radiators connected with Radiator Control and Monitor Console and checked out for TVAC test. Lockheed Thermal Control System Hardware –Radiators integrated onto test stand and installed into LM Delta chamber

11. LAT Design Integration and Analysis11 GLAST LAT Project1 Sep 2005 Thermal Engineering Activities – Current Design Engineering and Support –Environmental Specification – change Tracker Acceptance Level Tests (35C to 45C) –Reviewing electrical grounding scheme for MLI blankets with NASA/GSFC 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 Subsystem Support and Oversight –Planning for TKR TVAC support: TKR 11 & 12 week of 5 Sept and TKR 13 & 14 week of 12 Sept. LAT Thermal Control System –RCMC is currently being used in Radiator/TCS Protoqual test. Lockheed Thermal Control System Hardware –Radiator/TCS Protoqual Test in progress; hot performance and cold survival test segments completed. TVAC test

12. LAT Design Integration and Analysis12 GLAST LAT Project1 Sep 2005 Thermal Engineering Activities - Planned 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