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MIT 8 01 - Qalification/Functional Testing

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Cosmic RAy Telescope for the Effects of RadiationCRaTER Pre-Ship Review(I-PSR)Qalification/Functional TestingBob GoekeJanuary 3-4, 2008Cosmic RAy Telescope for the Effects of RadiationQual Test/Vibration -- SN2• Vibration Tests (32-06050.0102) -- 9/25-26/07– Sine; Loads - Sine Burst; Random -- all to ProtoFlight LevelsCosmic RAy Telescope for the Effects of RadiationQual Test/Vibration -- SN2Appendix O. CRaTER, Low Level Sine Sweep Post Vibe, Z-Axis. S/N 002. high-abort(f)low-abort(f)input3(f): Peak = 0.176 gninput4(f): Peak = 0.712 gninput5(f): Peak = 0.886 gncontrol(f)2000.0020.00 100.00 1000.0010.00001.00E-040.00100.01000.10001.0000Frequency (Hz)gn25sep07 CRaTER run05 z-axis post vibe sine sweepTelescope Level: 1 00 % C o n t r o l Peak: 0.422741 gn F u l l Level Time: 00: 0 3:19 Sweep Typ e : Lo g a rithmic Frequency: 1996.093872 Hz Demand Peak: 0.500000 gn T i me Remaining: 00:00:0 0 S w eep Rate: 2 Oct/Min Data saved at 03:27:06 PM, Tuesday, September 25, 2007 Report created at Report created at 03:27:08 PM, Tuesday, September 25, 2007Cosmic RAy Telescope for the Effects of RadiationQual Test/Vibration -- SN2• No exceptions to success criteria1. Complete testing to limit levels with the appropriate test factor.2. No structural degradation after test.3. No unexplained frequency shifts more than 5% between pre and post test.4. No Visible damage that is a result of the test environment.5. Pass all functional performance testing performed during and upon completion ofthe test.Cosmic RAy Telescope for the Effects of RadiationQual Test/TV -- SN2• Thermal-Vacuum Testing -- 9/27-10/5/07– +40C Hot soak/turn on/Long Form Functional– -40C Cold soak/turn on/Long Form Functional– 7 more +40/-40 cycles with instrument always on; Short Form Functionals• Success defined by no significant shifts in parameters given in Trend Analysis List– Sole variance was increase in noise of detector D6 from 0.7 ADU rms to 1.6 ADU rms– Limit in LFF for shifts is 0.3 ADU rms– Limit in SFF for absolute value is 2.0 ADU rms– Science requirement is 8 ADU rms maximumCosmic RAy Telescope for the Effects of RadiationCRaTER T-Vac Setup• Vacuum Chamber is a2’x2’x2’ stainless steelchamber• Interface plate to drive thespacecraft interfacetemperatures• TQCM in chamber tomonitor bakeout• Cobalt 60 source for useduring long formfunctional tests• Power source andspacecraft simulator feedthrough in chamberCosmic RAy Telescope for the Effects of RadiationThermal-Vacuum TimelineCosmic RAy Telescope for the Effects of RadiationQual Test/EMC -- SN2• EMC/EMI Tests (32-06050.0301) -- 10/15-23/07– CE01: minor limit failureCosmic RAy Telescope for the Effects of RadiationQual Test/EMC -- SN2• EMC/EMI Tests (32-06050.0301) -- 10/15-23/07– CE03: minor limit failureCosmic RAy Telescope for the Effects of RadiationQual Test/EMC -- SN2• RE02: major limit failureCosmic RAy Telescope for the Effects of RadiationQual Test/EMC -- SN2• Made change to SN1 (not yet buttoned up): removed bus voltage/current housekeepingtelemetry sense points.• Reran RE02 with SN1– RE02: less bad limit failureCosmic RAy Telescope for the Effects of RadiationQual Test/EMC -- SN2• Completed remaining EMC tests with SN1– CS01, CS02, CS06 passed– RS06: instrument fails in 240 - 1230 MHz range when exposed to launch site environment– RS06: instrument passes when exposed to LRO operational environmentCosmic RAy Telescope for the Effects of RadiationQual Test/Vibration Retest• Retest consisted of one axis (Z) random vibration at 10.1 grms– passedQual Test/Thermal-Vac Retest• Retest consisted of one +40/-40 thermal-vacuum cycle– included hot/cold survival soak and turn-on– Long Form Functionals both hot and cold– passedCosmic RAy Telescope for the Effects of


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MIT 8 01 - Qalification/Functional Testing

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