Transcript ppt
GLAST LAT Project LAT Mgr’s Meeting 2005 LAT Planning Meeting Mechanical/Thermal Systems June 15, 2005 Marc Campell 1 LAT Mgr’s Meeting 2005 GLAST LAT Project Status SLAC • Grid 2 is in inspection at Tapemation – Delivery to SLAC ECD: 7/1/05 • Static Load Test awarded to National Test Systems (NTS), Santa Clarita, CA • LAT Transporter – RFQ issued 6/13/05 – Continue investigation of refurbishing NRL container 2 GLAST LAT Project LAT Mgr’s Meeting 2005 Grid 2 Machining complete 3 LAT Mgr’s Meeting 2005 GLAST LAT Project Status (cont) Lockheed Martin - X-LAT • Completed X-LAT thermal cycling test – Key is to demonstrate that there is no change in the X-LAT heat pipe bonds before and after the test. – Ultrasonic inspection used to map disbonds • Pre and post-test results – 12 changes most approximately +/-0.1” (probe is .12” dia) – 3 significant changes on heat pipe 0 • .3 x 1.2 to .3 x1 .7 • .3 x 1.2 to .3 x 1.7 • .3 x .25 to .3 x 1.2 – 8 new one areas ~.2 x .2” – Total disbonded area still within limits • Next steps – Proceed with Weight and CG measurements – Re-measure this heat pipe 0 – Need to return to MRB with final results summary and recommendation 4 LAT Mgr’s Meeting 2005 GLAST LAT Project Status (cont) Lockheed Martin - Radiators • Fabrication of both Radiator panel is complete less instrumentation installation. – ECD 6/24 • MLI design finalized (interfacing velcro locations) – LM SCD to be revised Environmental test preps moving forward • Vibration testing – Acoustic and Sine vibe fixtures complete – TRR held 6/14 • 9 action items – key ones are need more details from pre-test analysis and additional details into procedure • Acoustic facility is being repaired (ECD 6/24) • SBIRS still on Vibe table (ECD 6/24) • Delta TRR to be held upon closure of action items, flight hardware complete and procedure released 5 LAT Mgr’s Meeting 2005 GLAST LAT Project Status (cont) Lockheed Martin – Radiators cont. • Thermal Vacuum testing – Thermal vacuum test plan in review – Test fixture design 90% complete – MLI test blankets available – SLAC provided EGSE console is 90% complete – ATP for console in review 6 LAT Mgr’s Meeting 2005 GLAST LAT Project MECH Milestones 7 LAT Mgr’s Meeting 2005 GLAST LAT Project Threats to RFI • LM X-LAT & Radiator delivery have no float. • X-LAT – Conclusive story on disbonds • Radiator – Potential cost over runs in testing • Vibration/Acoustic tests – Instrumentation requirements to qualify Radiator interface • Final test plan for thermal vacuum. – Lots of test prep work to go here • Timely resolution of test anomalies. – Pre-ship reviews • Closing all of the paperwork 8