1 / 23

THEMIS-SCM

THEMIS-SCM. THM – SCM – CDR – 08-April-2004 in Velizy Test and Calibration Plan I&T Plans prior to shipment to UCB EGSE Design I&T and Spacecraft Integration Plans Implementation Schedule. Bertrand delaPorte. THM-SCM-CDR – 2004.04.08. THEMIS-SCM.

zenda
Download Presentation

THEMIS-SCM

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. THEMIS-SCM • THM – SCM – CDR – 08-April-2004 in Velizy • Test and Calibration Plan • I&T Plans prior to shipment to UCB • EGSE Design • I&T and Spacecraft Integration Plans • Implementation Schedule Bertrand delaPorte THM-SCM-CDR – 2004.04.08

  2. THEMIS-SCM SCM VERIFICATION – TEST MATRIX (1) : is the M.o.I. requested ? Bertrand delaPorte THM-SCM-CDR – 2004.04.08

  3. THEMIS-SCM I&T plans prior to delivery – SCM – SC (Sensor) Bertrand delaPorte THM-SCM-CDR – 2004.04.08

  4. THEMIS-SCM I&T plans prior to delivery – SCM – PA 3D+ cubes Bertrand delaPorte THM-SCM-CDR – 2004.04.08

  5. THEMIS-SCM I&T plans prior to delivery – SCM – full PA Bertrand delaPorte THM-SCM-CDR – 2004.04.08

  6. THEMIS-SCM SCM - EGSE • For Bench Test : • mu-metal box (to put the sensor inside) – one only ? • EGSE Interface Box (to be plugged to the PA) • Power Supply +/-10V, Signal Generator, Oscilloscope, multimeters • For Integration in the spacecraft • mu-metal box • Signal Generator • Portable PC + dedicated software, to be connected to the Themis acquisition system (in a LAN or via Internet) Bertrand delaPorte THM-SCM-CDR – 2004.04.08

  7. THEMIS-SCM SCM Bench Test Configuration Bertrand delaPorte THM-SCM-CDR – 2004.04.08

  8. THEMIS-SCM MAGNETIC CALIBRATION STATION – CHAMBON LA FORET Bertrand delaPorte THM-SCM-CDR – 2004.04.08

  9. THEMIS-SCM • I&T AND SPACECRAFT INTEGRATION PLAN • Pre-intégration SCM – IDPU (DFB) • Integration to the spacecraft Bertrand delaPorte THM-SCM-CDR – 2004.04.08

  10. THEMIS-SCM I&T AND SPACECRAFT INTEGRATION PLAN • Pre-Integration with IDPU • An « Interface Model » of the Pre-Amp will be provided for that purpose • Same Power, Command, analog output interfaces • Power and Cal Mode identification by led • Cal Signal re-injected to the input • A signal generator can be connected to each input • Validation can only be done by analysis of the telemetry data (tbd) Bertrand delaPorte THM-SCM-CDR – 2004.04.08

  11. THEMIS-SCM I&T AND SPACECRAFT INTEGRATION PLAN • Integration in the spacecraft • Delivery (Incoming Inspection, Bench Test) • Mechanical Integration of the PA, connection to the boom harness • Sensor in the mu-metal box, connection to the boom harness • Electrical Integration (bounding, isolation, dangerous voltage) • Power ON and functionnal Test • Validation can only be done by analysis of the telemetry data (tbd) Bertrand delaPorte THM-SCM-CDR – 2004.04.08

  12. THEMIS-SCM SCM – INTEGRATION IN THE SPACECRAFT Initial configuration The sensor is inside the mu-metal box, connected to the PA via the boom harness Requirement: to keep the sensor in the mu-metal box until all experiments are integrated in the spacecraft (mission operation test) Question: what is performed in UCB, and what is done in Swales ? Bertrand delaPorte THM-SCM-CDR – 2004.04.08

  13. THEMIS-SCM SCM Mu-metal box Bertrand delaPorte THM-SCM-CDR – 2004.04.08

  14. THEMIS-SCM SCM – INTEGRATION IN THE SPACECRAFT • WHAT CAN BE DONE WITH THE SENSOR IN THE MU-METAL BOX • axis identification • re-verification of the end-to-end calibration • Phase relation within the 3 components (for the waveforms) • check of the conducted noise • SCM/EField timing reference [and inter-calibration] (tbd) Bertrand delaPorte THM-SCM-CDR – 2004.04.08

  15. THEMIS-SCM SCM – INTEGRATION IN THE SPACECRAFT • SENSOR MOUNTED ON THE BOOM • PA saturated by the 50/60 Hz • except in a quite site (i.e. Chambon), or in an EMC chamber • No measurement possible but a big failure would be seen • INSTALLATION OF THE MLI - by UCB when ? Bertrand delaPorte THM-SCM-CDR – 2004.04.08

  16. THEMIS-SCM SCM – INTEGRATION – QUICK TESTS WITH HOUSEKEEPING • A few Housekeeping are needed to check the experiment rapidly (if possible in real time) during the ground tests and in the commissioning. • HOUSEKEEPING FOR SCM: • SCM-PWR-STATUS ( 1 bit ) • SCM-CAL-STATUS ( 1 bit ) • SCM-VOLT-MONITOR ( 8 bits ) • SCM-MEAN-VAL-BX, __BY, __BZ ( 16 or 8 bits ) • Mean average of |Bi| over one TM format (similar to r.m.s. value) Bertrand delaPorte THM-SCM-PDR – 2003.10.10

  17. THEMIS-SCM AC MAGNETIC NOISE VERIFICATION • In the low frequency range (< 4 kHz), the main sources of AC noise are • The beating within several higher frequencies, especially the DC/DC Converters if they are not synchronised. It can be conducted and/or radiated. • The solar pannels (cannot be verified on the ground) • The CETP can help to analyse the AC radiated noise around the spacecraft. A « magnetic sniffer » has been designed and built for that purpose. In order to avoid the saturation by the 50/60 Hz, the analysis is separated into two bandwidths: below 50 Hz and above 300 Hz (5th harmonic) Bertrand delaPorte THM-SCM-CDR – 2004.04.08

  18. THEMIS-SCM SCM INTEGRATION – TEAM SUPPORT The SCM team will support all critical activities of the integrations. However, due to the large number of satellites, a strategy must be imagined to limit the number of travels, the cost and the time spent The EM integration will be supported The FM will be delivered 3 by 3 and the level of support for each test will be agreed with UCB Capability of remote supporting should be implemented Bertrand delaPorte THM-SCM-CDR – 2004.04.08

  19. THEMIS-SCM EXAMPLE OF REAL TIME SUPPORT Bertrand delaPorte THM-SCM-CDR – 2004.04.08

  20. THEMIS-SCM SCM SCHEDULE – KEY DATES Bertrand delaPorte THM-SCM-CDR – 2004.04.08

  21. THEMIS-SCM Bertrand delaPorte THM-SCM-CDR – 2004.04.08

More Related