GLAST LAT Project DOE/NASA Mechanical Subsystem Per Review, March 27, 2003
Document: LAT-PR-0XXXX Section 3.1 Design Overview 1
GLAST Large Area Telescope:GLAST Large Area Telescope:
Mechanical Systems Peer ReviewMarch 27, 20033.1 – Design Overview
Marc CampellSLACMechanical Systems Mgr.
Gamma-ray Large Gamma-ray Large Area Space Area Space TelescopeTelescope
GLAST LAT Project DOE/NASA Mechanical Subsystem Per Review, March 27, 2003
Document: LAT-PR-0XXXX Section 3.1 Design Overview 2
TopicsTopics
Agenda• Mechanical Systems Hardware • Major subassemblies• Drawing tree• Design & fabrication responsibilities
GLAST LAT Project DOE/NASA Mechanical Subsystem Per Review, March 27, 2003
Document: LAT-PR-0XXXX Section 3.1 Design Overview 3
Mechanical Systems HardwareMechanical Systems Hardware
Radiators
Grid Box Assembly & 1 Radiator
GLAST LAT Project DOE/NASA Mechanical Subsystem Per Review, March 27, 2003
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Major SubassembliesMajor Subassemblies
• Grid Box Assembly– Mechanical Systems Top Assembly test configuration– Static Load and Thermal Cycle tests
• Grid Box Base Assembly– Configuration delivered to I & T for LAT integration– Defines base configuration for LAT assembly drawings
• Grid Assembly– Mechanical backbone
• Radiators– Fabricated and tested by LM
• X-LAT and Mid-plates– Fabricated and tested by LM
GLAST LAT Project DOE/NASA Mechanical Subsystem Per Review, March 27, 2003
Document: LAT-PR-0XXXX Section 3.1 Design Overview 5
Grid Box Assembly DesignGrid Box Assembly Design
+Z
+Z
Heat Pipe Patch Panel
S/C Mount Interface
Mid-Plate
X-LAT Plate Assy
Radiator Mount Bracket
EMI Shields
CAL-Grid Interface
GLAST LAT Project DOE/NASA Mechanical Subsystem Per Review, March 27, 2003
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Grid Box Base Assembly
+Z
GLAST LAT Project DOE/NASA Mechanical Subsystem Per Review, March 27, 2003
Document: LAT-PR-0XXXX Section 3.1 Design Overview 7
Grid Assembly
+Z
GLAST LAT Project DOE/NASA Mechanical Subsystem Per Review, March 27, 2003
Document: LAT-PR-0XXXX Section 3.1 Design Overview 8
Radiators and X-LAT PlatesRadiators and X-LAT Plates
+Z
GLAST LAT Project DOE/NASA Mechanical Subsystem Per Review, March 27, 2003
Document: LAT-PR-0XXXX Section 3.1 Design Overview 9
Drawing TreeDrawing Tree
GLAST LAT Project DOE/NASA Mechanical Subsystem Per Review, March 27, 2003
Document: LAT-PR-0XXXX Section 3.1 Design Overview 10
Design & Fabrication ResponsibilitiesDesign & Fabrication Responsibilities
Manufacturing/Integration ActivityManufacturing/Integration ActivityQuantity Quantity Flt/SpareFlt/Spare
Responsible Responsible OrganizationOrganization
Work Work PerformedPerformed
Grid Assembly
Fabricate, inspect Grid structure 1 / 0 SLAC Sub
Fabricate, test Top Flange heat pipes 5 / 1 LM-ATC LM-HPPC
Fabricate, test Downspout heat pipes 12 / 1 LM-ATC LM-HPPC
Assemble, test Grid assembly 1 / 0 SLAC SLAC
Fabricate, inspect EMI Skirt parts 1 / 0 SLAC SLAC
X-LAT Thermal Plate
Fabricate, inspect X-LAT Plate parts LM-ATC LM
Fabricate, test X-LAT heat pipes 9 / 1 LM-ATC LM-HPPC
Assemble, test X-LAT Thermal Plates 2 / 1 LM-ATC LM-ATC
Assemble, test mid-plate 1 / 0 LM-ATC LM-ATC
Radiators
Fabricate, inspect Radiator parts LM-ATC Sub
Fabricate, test Radiator VC heat pipes 12 / 1 LM-ATC LM-HPPC
Assemble, inspect Radiators 2 / 0 LM-ATC LM-HPPC
Test Radiators LM-ATC LM-ATC
Thermal Control System
Fabricate TCS hardware 1 / 1 SLAC Sub
Thermal-balance test TCS system 1 / 0 LM-ATC LM-ATC
Legend
LM-ATC Lockheed-Martin Advanced Technology Center, Palo Alto CALM-HPPC
Lockheed-Martin Heat Pipe Product Center, Sunnyvale CA
SLAC Stanford Linear Accelerator Center, Menlo Park CASub Subcontractor to be determined
Mechanical SystemsMechanical Systems
GLAST LAT Project DOE/NASA Mechanical Subsystem Per Review, March 27, 2003
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End of End of Section 3.1Section 3.1
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