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Precision Filter Radiometer

SOVIM. Precision Filter Radiometer. SOVIM Presentation Structures Description Structural Subsystem Verification (FEM, Vibr, Analysis) Pressurized System (n.a. SOVIM) Material flammability, toxicity and compatibility List of toxic materials (n.a.)

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Precision Filter Radiometer

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  1. SOVIM Precision Filter Radiometer • SOVIM Presentation • Structures • Description Structural Subsystem • Verification (FEM, Vibr, Analysis) • Pressurized System (n.a. SOVIM) • Material flammability, toxicity and compatibility • List of toxic materials (n.a.) • Final materials compatibility status (n.a.) • Material List • Non-ionizing radiation • Electrical subsystem • Power distribution schematics • Verification • Avionics Control • Schematics of safety critical subsystems • Summary of test results etc. • Mechanism in critical application • Summary of all mechanism • Reports of verification etc. • Batteries (n.a.) • Sealed Containers (n.a.) Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  2. SOVIM Precision Filter Radiometer 1.1 Package 2 Valves DPU 2 Sunphotom. 3 Radiometers TASS (black) Heatsink Thermal Washer Sun Shield DIARAD Electronics 2 Valves Cover Plate (Cover Mechanism not shown) DIARAD Sensor Not shown: Cover mechanism DC/DC, all PCB‘s Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  3. SOVIM Precision Filter Radiometer 1.1 Package Connector flange Instrument Slots Mounting Feet Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  4. SOVIM Precision Filter Radiometer 1.1 PMO6-V Radiometer Hall Elements SOVIM has three PMO6 Radiometer integrated. Two are PMO6V types, one is an older PMO6R type. The V-type is the same as we flown on SOHO, the R-type is the same as on SOVA. Safety critical parts: Nothing! Shutter Acutator Shutter (the only rotating mass on Radiometer 3.6g) Printed Circuit Boards Muffler Precision Aperture Cavity Connector Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  5. SOVIM Precision Filter Radiometer 1.1 PMO6-R Radiometer The R-type is very similar to the V-Type and is an EURECA reflight instrument. Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  6. SOVIM Precision Filter Radiometer 1.1 Sunphotometer Printed Circuit Boards Purging stub SOVIM has two three channel SPM integrated. This SPM is more or less the same as we flown on EURECA. Safety critical: Glass filters. This small piece of glass is wraped on all side. In front is the precision aperture with a diameter of 2mm! Connector Photo Diode Glass Filters Precision Aperture Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  7. SOVIM Precision Filter Radiometer 1.1 Two Axis Sun Sensor Linear CCD‘s Connector Slit Aperture PCB‘s not shown The SOVIM flight TASS is the flight TASS of EURECA. Quartz Protective Window Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  8. SOVIM Precision Filter Radiometer 1.1 DIARAD Sensor and Electronics Shutter Wheels The DIARAD is also an „EURECA reflight“ instrument, with a few modifications. Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  9. SOVIM Precision Filter Radiometer 1.1 Sun-Shield View from package side View from sun-side Covered with BSM Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  10. SOVIM Precision Filter Radiometer 1.1 DPU UIM 3 User Interface Module 3 UIM 2 User Interface Module 2 UIM 1 User Interface Module 1 CPU Central Processing Unit SIM Space Craft Interface Module TIM Timing Module EURECA „reflight DPU“ Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  11. SOVIM 1.2 Sovim Instrument FEM Analysis Report Conclusions of FEM (SOV-CSZ-RP-1001 / 18.12.02) The drawings at PMOD are updated with all modifications proposed by CSAG. The results from the final analyses presented in section 6 (Analysis Results) show that the optimised SOVIM Package design is sound. The first frequency of vibration is above 220Hz. The results from the simple stress analysis presented in section 6.2.2 (Results from Static Analysis) show, that no obvious stress problems exist with the present design. Mode Shapes of Modal Analysis for optimised Sovim Package Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  12. SOVIM Precision Filter Radiometer 1.2 Structural Verifaction • In parallel with the mechanical design, a structural analysis (FEM) has been done to asses strength compliance and dynamic behavior (first resonance frequency). See Contraves document SOV-CSZ-RP-1001, Issue 3, 18/12/2002. • Validation of the FEM model and confirmation of compliance shall be done through vibration-testing on the PFM at acceptance test level. • Structural design shall be based on fracture control principles and procedure. See IIRD document “SOVIM-PMO-PQA/G-109”. Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  13. SOVIM Precision Filter Radiometer 2 Pressurized System SOVIM does not contain any pressurized systems or subsystems. All internal boxes and instruments have holes to be adequately vented. The Sensor Package is vented trough three pairs of in/out valves, and in the case of DIARAD trough its openings in the cover plate. Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  14. SOVIM Precision Filter Radiometer 2.1 Valves The design is as for EURECA, SOVA and was space qualified (see:SOVIM-PMO-VER/G-002). The pressure difference to activate the valve is set to ±50hPa, which is individually tested for each valve. The EURECA breathe out valves Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  15. SOVIM Precision Filter Radiometer 3 Material flammability, toxicity and compatibility 3.1 List of toxic materials SOVIM does not contain any toxic materials. All the materials used are listed in the DML and DCL. 3.2 Final materials compatibility List 3.3 Material List DML: SOVIM-PMO-PQA/G-102 DCL: SOVIM-PMO-PQA/G-103 Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  16. SOVIM Precision Filter Radiometer 4 Non-ionizing radiation • SOVIM has one source of non-ionizing radiation: The three DC/DC converters. This sub-units are re-flight units, already used on ESA-EURECA and was successfully tested at ESA/ESTEC Testcenter Noordwijk (NL) according to the requirements: EURECA Electromagnetic Compatibility and Power Quality Specification” SPE 1200 604. • Experiment EMC/EMI tests foreseen at ESTEC spring 2003 Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  17. SOVIM Precision Filter Radiometer 5 Electrical subsystems Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  18. SOVIM Precision Filter Radiometer 5.1 Overall power distribution Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  19. SOVIM Precision Filter Radiometer 5.1 Main power switches and inrush current limiter Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  20. SOVIM Precision Filter Radiometer 5.1 Schematics : Electrical fuse and inrush current limiter Electr. Fuse Inrush current limiter Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  21. SOVIM Precision Filter Radiometer 5.1 EURECA reflight main power switch groups One complete group including a relay, over-current measurement and a secundary inrush current limiter Primary inrush current limiter Main current measurement Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  22. SOVIM Precision Filter Radiometer 5.1 Schematics : EURECA reflight DC/DC One of four DC/DC groups Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  23. SOVIM Precision Filter Radiometer 5.1 EURECA reflight DC/DC +5V -8V +8V +13V Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  24. SOVIM Precision Filter Radiometer 5.1 DPU power interface circuits Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  25. SOVIM Precision Filter Radiometer 5.1 Voltage to Frequency Converters 14 VFC channels Heater drivers Housekeeping multiplexers ASIC Current sensor Power switches Connector harness Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  26. SOVIM Precision Filter Radiometer 5.1 Cover Driver PCB Hall element driver Harness to VFC One of five cover driver-stage Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  27. SOVIM Precision Filter Radiometer 6 Verification Electrical Subsystems • Prototyping and testing of all subunits before start of manufacturing of flight units • Detailed design review of all subunits • FMECA • Measurement of electrical signal levels at min/max condition • Measurement of timing range compatibility at min/max condition • Thermal environment test • Functional test • Data I/F is tested with “Electrical Software Simulator” at ALENIA Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  28. SOVIM Precision Filter Radiometer 6 Avionics Control n.a. Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  29. SOVIM Precision Filter Radiometer 7 Mechanism in critical application Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  30. SOVIM 7.1 COVER Mechanism Back Surface Mirror (mass 0.4g) Cover Plate Cover (rotating mass 6.9 g) TASS quartz window is covered with two slit apertures of 5 x 17.5mm size. Locking Pin Moving mass 0.9 g End Stops Hall Elements Step Motor Linear Actuator The whole „Cover“ consist of five individual identical cover mechanism. All five Covers are mounted on the cover plate. The locking pin is to hold the cover during launch and reentry in position, to protect the sensitive surfaces against contamination. Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  31. SOVIM Precision Filter Radiometer 7.1 Cover Mechanism Single cover without BSM Motor axle Cover Plate Locking pin End stops Diarad openings TASS openings without quartz window Cover Mechanism view from the sun-direction Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  32. SOVIM Precision Filter Radiometer 7.1 Radiometer Shutter Mechanism 90° Actuator Shutter covered with BSM (3.6 gr.) Position sensing PCB Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  33. SOVIM Precision Filter Radiometer 7.2 Reports of mechanism verification • Reports of mechanism verifications will be delivered at IFDR and with PFM-H/W acceptance data package at delivery. • Already done are the following verifications : • Cover qualification tests • Cover life test • PMO6-V shutter life test • DIARAD shutter life test Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  34. SOVIM Precision Filter Radiometer 8 Batteries SOVIM does not contains any batteries or elctrolytic capacitors. Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  35. SOVIM Precision Filter Radiometer 9 Sealed Containers SOVIM does not contain any sealed containers. Please refer also to point 2 : Pressurized System. ... internal boxes and instruments have holes to be adequately vented.... Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  36. SOVIM Precision Filter Radiometer Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  37. SOVIM Precision Filter Radiometer Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  38. SOVIM Precision Filter Radiometer Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  39. SOVIM Precision Filter Radiometer Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

  40. SOVIM Precision Filter Radiometer Observatory Davos World Radiation CenterSafety Workshop 6&7 Feb. 03 ESTEC

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