1. GLAST Large Area Telescope:
Gamma-ray Large Area Space Telescope
GLAST Large Area Telescope:
Mechanical Systems Peer Review
March 27, 2003
3.1 – Design Overview
Marc Campell
SLAC
Mechanical Systems Mgr.

2. Topics Agenda Mechanical Systems Hardware Major subassemblies
Drawing tree
Design & fabrication responsibilities

3. Mechanical Systems Hardware
Radiators
Grid Box Assembly & 1 Radiator

4. Major 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

5. Grid Box Assembly Design+Z
CAL-Grid Interface
Mid-Plate
X-LAT Plate Assy +Z
Radiator Mount Bracket
Heat Pipe Patch Panel
EMI Shields
S/C Mount Interface

6. Grid Box Base Assembly +Z

7. Grid Assembly +Z

8. Radiators and X-LAT Plates+Z

9. Drawing Tree

10. Design & Fabrication Responsibilities
Manufacturing/Integration Activity
Quantity Flt/Spare
Responsible Organization
Work Performed
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
Assemble, test Grid assembly
Fabricate, inspect EMI Skirt parts
X-LAT Thermal Plate
Fabricate, inspect X-LAT Plate parts LM
Fabricate, test X-LAT heat pipes
9 / 1
Assemble, test X-LAT Thermal Plates
2 / 1
Assemble, test mid-plate
Radiators
Fabricate, inspect Radiator parts
Fabricate, test Radiator VC heat pipes
Assemble, inspect Radiators
2 / 0
Test Radiators
Thermal Control System
Fabricate TCS hardware
1 / 1
Thermal-balance test TCS system
Mechanical Systems
Legend
LM-ATC
Lockheed-Martin Advanced Technology Center, Palo Alto CA
LM-HPPC
Lockheed-Martin Heat Pipe Product Center, Sunnyvale CA
SLAC
Stanford Linear Accelerator Center, Menlo Park CA
Sub
Subcontractor to be determined

11. End of
Section 3.1