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Particles and Fields Package Monthly Status Review (MSR)
December 15, 2010 Dave Curtis, PFP PM
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SSL Contracting Status
Phase B/C/D Contract in place. An updated spending plan (phasing) has been submitted
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Schedule Status No improvement in pre-CDR schedule
A few layouts lagging SWIA preamp/MCP board on critical path to CDR SWIA/STATIC mechanical still behind but making slow progress Due to personnel conflicts with RBSP RBSP environments complete! See next chart Result is the EM system testing completes right about the time of the CDR. EM Test completion current showing July 11, after ICDR. Will reorganize test schedule to prioritize retiring risk early (Before ICDR) Package I&T before SWIA/STATIC Calibrations
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Manpower Concern with competition with RBSP-EFW for some key people
Power converter design team Reorganized team to streamline priority tasks Significant progress this month – most converter layouts complete, some boards being loaded SWIA/STATIC/LPW boom mechanical engineers SWIA/STATIC EM mechanical parts still behind but catching up No longer on the critical path to CDR FSW lead Has fallen behind due to other priorities, still ahead of the other subsystems Additional parts engineer added to QA team Looking at adding additional electrical test engineer, software test engineer
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Accomplishments Almost all EM EEE parts at SSL PWBs are in layout
3 part types (zener diodes) late – looking at work-arounds First preliminary parts SEL test preliminary results look good Analysis of transistor usage complete to determine which if any need TID testing PWBs are in layout >65% layouts complete, boards being loaded, some in test see below DCB loaded, in test Most EM Mechanical parts are in fab Some part-level design work still in progress on SWIA/STATIC PFDPU simulator GSE being delivered to GSFC, LASP this week More in instrument sections…
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Ongoing Work Supporting Project planning process
Supporting EMC, Payload, SDT working groups Completing EM layouts, board loading Continue EM board testing Completing EM mechanical part drawings, getting parts fabricated Preparing for STATIC TOF system acoustic test next month
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EM Status Summary SSL EM & GSE Layouts (23)
16 layouts complete (15 boards fabricated, 6 boards loaded) 3 layouts in final review 4 in progress (hope to complete this month) LM Interface Test preparations (3/25/2011): DCB board loaded, in test GSE & FSW ready to start testing Current schedule shows ready by 2/10/2011 for the LM test 3/2/2011 with power converter EM EEE Parts Almost all EM Actives at SSL 3 problem parts, not holding anything up yet Connectors on order, mostly delivered Passives being ordered EM detectors on order (MCP, SSD, foils, magnets) SWIA MCP, STATIC foils, SEP magnets delivered EM Mechanical parts: SWEA, SEP, LPW Boom (not sensor), STATIC TOF in fab Remaining SWIA, STATIC parts into fab soon SEP EM mechanical in assembly
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PFP RFA Status
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Trades, Issues SWEA Surface Treatment selected – Black Nickel
Passed testing CESR found NO European vendor Looking at how to use US vendor (potential import/export issues) HV801 issue still open Two options: Amptek HV801, Micropac 66353 Amptek delivered some EM HV801s Have parts for EM Working on an analysis to decide if the PFDPU mechanical design needs to be augmented to support the PWBs to avoid excessive displacements in vibe MAG EM PWB has option for a center support, others do not
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Top Risks P10 (Operational Heaters) Retired; need heater power
P16 (Launch Loads) Retired (Atlas 5 loads acceptable)
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Risks List
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PFP Mass No significant change
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Mass Tracking Chart
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PFP Power Added Operational heaters for SWEA, SWIA, STATIC, SEP (No change since last month) Will need to submit a CCR to increase NTE by ~15W orbit average to get back to 15% margin [CCR 243 submitted] Survival & Peak power also increase LM looking at impacts
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PFP Power Trend
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PFP Data Rate Per allocations from Bruce
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Requirements Verification Status
Nothing new to report.
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MAVEN Magnetometer Status Dec 14, 2010
Connerney, Sheppard, Schnurr, Oliversen, Espley, etc. 18
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GSFC/MAG - Accomplishments Last Month(s)
All MAG-related RFA’s are closed (IPDR, Mission PDR). MAG a/c heater (prototype) circuit board fabricated; heater controller assembled and operational. Bench testing of heater controller in progress. Procurement status of long-lead and limited availability items: Received Mil spec CMOS quad bilateral switches (4066’s). Received flight LTC1604 ADCs (availability). Received PWM 5032 parts from Aeroflex (new heater design). Received EM sensor assembly parts (base, bobbins, small parts). EM electronics board layout completed (held until Nov 15 pending revision E MICD from UCB). Parts kitting in progress. Magnetics piece parts for EM (transformers, inductors) wound & tested. EM sensor assembly bobbins wound & awaiting sensor assembly. Revised MICD with LM at GSFC (Nov 30) and approved version #2. Fit checked EM PWB with frame received from UCB (Dec 14): PWB fabricated to rev E UCB board MICD did not fit (but it appears that frame is obsolete, rev D). Identified additional personnel (FPGA programming) and secured commitment. 19
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Near Term Plans & Open Issues
Fit check MAG EM PWB as soon as Rev E frame arrives (now in transit). Release EM PWB for assembly. Revise MAG schedule to re-align with UCB schedule. Assemble EM sensor. Support GSE delivery and training Dec 16. Finalize the baseline instrument command list and telemetry packet contents. Continued specification of the magnetometer as documented in the Specification and User's Manual. Complete FPGA functional blocks and interface definition. Work software requirements with UCB (software specification for PFDPU). 20
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Jasper Halekas, SWIA Lead
MAVEN PFP SWIA Status December 2010 Jasper Halekas, SWIA Lead 21
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SWIA Progress Electrical Progress Mechanical Progress
Anode PWB complete, loading/testing in progress Digital PWB complete, out for loading LVPS PWB complete, waiting for loading Sweep prototype in re-layout, STATIC/SWIA coordinated Preamp/MCP board in layout (routing nearly complete) Mechanical Progress MEs finally done with RBSP! HV connector design nearly complete MCP parts out for fab Pin-puller and attenuator design now progressing again Analyzer detailed design progressing again Detector Progress Microchannel plates arrived, waiting for chamber refurbishment and mechanical parts for testing A121 preamps first round of testing complete, second round with flight resistors coming soon
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SWIA Issues Staffing Board layout/testing and mechanical design/fabrication behind ME staffing problem should be over RBSP testing complete Dalton and Johnson finally full time for SWIA/STATIC Layout queue remains tight, but the end is in sight Next tight point is kitting/loading boards
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First Boards Back Anode Top Anode Bottom Digital Boards
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Dave Mitchell, SWEA Lead
MAVEN PFP SWEA Status December 2010 Dave Mitchell, SWEA Lead 25
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EM sensor in vacuum chamber
SWEA Status, EM - CESR Mechanical EM sensor assembled, functional tests complete, results under review Starting fab of FM electronics housing Fab of FM sensor pending review of EM functional tests Black nickel chosen to coat deflectors, toroidal grids, and external surfaces; now selecting blackening (Cu2S or CuO) for top cap and interior of hemispheres Front-end Electronics (MCP, HVPS) Transformers fab & test complete. EM sensor in vacuum chamber
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SWEA Status, EM - SSL Pedestal Mechanical LVPC Digital
Fabrication complete, in house. LVPC PWB fab complete, in house. Digicom to kit. Digital Digicom to kit and load. FPGA implementation to be done Dec - early Jan SWEA Pedestal SWEA Digital PWB 27
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MAVEN PFP STATIC Status December 2010
Jim McFadden, STATIC Lead 28
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STATIC Accomplishments
MCP PHD test electronics purchased and tested Carbon foil inspection test setup purchased (camera/microscope) Final batch of EM unit carbon foil carrier frames delivered, inspected, trimmed, documented. Preamp board out for quote HV Sweep board stability testing complete – feedback caps determined. MCP HV multiplier stack-stick board out for fabrication. Digital board PCB delivered – gathering parts for assembly. MCP mounting parts drawings complete, MCP parts ordered Electronics box, TOF housing and cover for acoustic test close out drawings complete – out for quote. Mechanical drawings of electronics boards updated and HV connector detailed design completed. Calibration chamber vendor selected and cal-chamber support structure design complete, material quotes received. Helmholz coil bids solicited. 29
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STATIC Open Issues Carbon foil decontamination procedures being developed – (bake at 200oC in air destroys foils, in vacuum it appear to wrinkle foils) Carbon foil mounting procedures still being optimized (water temperature, surfactant amount, mechanical equipment, storage) Cleanroom build continuing – HEPA buildout completed TDC layout still in process. HV Sweep board layout needs mods for new parts & shield walls 15kV-MCP board needs to be kitted - MCP HV multiplier from VMI delayed - stack-stick alternate developed, waiting on HV connectors. STATIC FPGA still in development LVPS needs BOM and needs to be kitted, built and tested (Berg). Analyzer and mechanical attenuator still in development New vacuum calibration chamber not be ready for MCP testing so an older chamber will be readied and another chamber refurbished – equipment purchase in process.
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STATIC EM Fab
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MAVEN PFP SEP Status December, 2010 Davin Larson, SEP Lead 32
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SEP Accomplishments DFE board stuffed with (most) parts
FLEX circuit designed, layed out, and Fabbed (see picture above) Slightly thicker than expected but should be ok. - not critical DAP board sent for quote (received 3 quotes back) Fixing a few last minute layout problems before sending for fab. FPGA still in design by Jianxen Chen Minor design changes in layout are incorporated in DAP layout Expect mid Dec completion Mechanical parts starting to arrive. Critical parts (for detector stack) have arrived and kitted for detector assembly Problems with carbon blacking (low quality) may be acceptable for EM but will have to change method for flight
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SEP Open issues Mechanical parts still in production
Holiday / AGU meeting slowdown typical of this time of year.
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MAVEN PFP DCB, Power Converter & GSE Status
December 2010 Dorothy Gordon Rick Sterling Timothy Quinn Peter Berg 35
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DCB Status Population Completed for DCB-ETU#1
Delivered along with FLASH Daughter Board #1 (shown with Prototype PROM socket, and without Daughter board) Inspection and testing of both boards is in progress
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GSE Hardware/Firmware Status
MISG FPGA Development Instrument Mode development has been started PFDPU Mode has been released for initial delivery MISG Production Status Digicom has delivered 10 populated boards (bringing the total to 12) along with chassis harnessing Five of the delivered boards have passed acceptance tests Two chassis have been assembled (to be delivered to the MAG and LASP teams).
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GSE Hardware/Firmware Status
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GSE Hardware/Firmware Status
MISG and Test Harnesses The system and instrument GSE/Testing harnessing has been specified First set of harnesses prepared for the LASP and MAG teams, along with the initial set of PC104 extender boards
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GSE Software Status First generation of GSEOS configuration files built for LPW and MAG. These include: Command and Telemetry definitions (CTM) Telemetry decoders Telemetry displays Instrument initialization scripts
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Power Converter Status (1)
STATIC MCP Supply Designed small voltage multiplier board (in lieu of VMI delivering a prototype) Status: in fabrication BOMS were drawn for the following boards: STATIC LVPS SWIA LVPS SWEA LVPS STATIC ACC+MCP REG
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Power Converter Status (2)
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Concerns Connector delivery dates may impinge on schedule
PC104 and HDLP types (both on order from Hypertronics) Population of the FPGA CGA package (flight part) Need to identify an Assembly Facility that is capable and approved for MAVEN Flight Board Manufacturing
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MAVEN PFP Flight Software Status
December Peter Harvey 44
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Status Interface Documents FSW Development Test Status
Proposed FSW Fault Protection to monitor processes and status Reviewed Fault protection w/ spacecraft provider and project SC-PFDPU ICD changes being discussed Awaiting clarification of the SC-PFDPU interface Reviewed new DFB specification Reviewed new MAG specification Reviewed new DCB specification New A/D document (SYS_027) overlapping with DCB (DCB_001G) EUV door status moving from EUV message to PFDPU direct sampling FSW Development Analysis of Multiple Command Streams caused us to convert from 16 to 32-bit command definition. (Remove state-dependencies) Updated the Command/Telemetry document, including test cases Rewrote the Command input software to conform to the new 32-bit specification Revising the IO module to meet revised DCB specification Test Status DCB ETU assembled DCB FPGA to be programmed this week DCB ETU will begin board-level hardware test DCB ETU to Hyperterminal needs test software to be converted No GSE/GSEOS ready to communicate
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Metrics Chart Progress Points=Telecons with GSFC. 1 pt for each telecon, 0 if the telecon did not happen. Management Effort. Expected 10% or less, but has required phase A requirements and plans to be written in phase B.
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Margin Chart
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Fever Chart Boot Requirements changes in the works
Boot Specification (Fault protection) changes in the works Boot Development halted DCB ETU board unavailable for test of Boot FSW.
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