1. June 16, 2015SPP/FIELDS SOC CDR: Integration & Test SPP/FIELDS Integration and Test SOC Critical Design Review Keith Goetz University of Minnesota Goetz@umn.edu 1

2. June 16, 2015SPP/FIELDS SOC CDR: Integration & Test FIELDS Block Diagram 2

3. June 16, 2015SPP/FIELDS SOC CDR: Integration & Test I&T Plans Philosophy –Requirements are verified as early as possible at a low level Verifies subsystems, Retires risk –Requirements are verified at the highest level of assembly possible Often involves verifying a requirement at several levels –Maintain flexibility in test sequencing to maintain schedule Tests on ETU/EM ✔ –Substantial environmental test program on EM hardware –FIELDS EM units have been assembled, integrated and tested –Includes TV Tests on Flight Units –Full environmental test program on Flight units Typical Test Levels: –Subassembly (circuit board): functional –Component (e.g. V1, MAG, SCM, MEP): functional, mass properties, vibration, TV, deployments, magnetics –Instrument: functional, calibration, interface, EMC, TV 3

4. June 16, 2015SPP/FIELDS SOC CDR: Integration & Test Planned ETU I&T Flow 4

5. June 16, 2015SPP/FIELDS SOC CDR: Integration & Test Planned FM I&T Flow 5

6. June 16, 2015SPP/FIELDS SOC CDR: Integration & Test Procedures Each test will be documented by a Test Procedure –Test procedure shall identify IRD requirements to be verified by the test –Test procedure shall include pass/fail criteria –System Engineer, QA, Subsystem lead to sign off on procedure before use –System Engineer, QA to sign off on completed as-run procedure –QA to ensure Red-lines to be transferred into procedure before next use Each completed test to be documented by a Test Report –ETU and subassembly test reports may be a combination of the as-run procedure and lab notebook –System Engineer to sign off on test reports, and determine if test adequately verifies associated requirements Discrepancies found during tests to be documented in a Problem Failure Report (PFR) –Starting with first functional tests at FM subassembly level –Includes any problem (including software) not immediately identified as a test setup or operator problem which cannot stress the flight article –QA will track PFRs to closure with concurrence of the Failure Review Board (includes APL) 6

7. June 16, 2015SPP/FIELDS SOC CDR: Integration & Test Calibrations Co-I hardware institutions will deliver fully calibrated sub- assemblies Once FIELDS instrument is fully integrated –Several verification cals in ambient and at temperature –Timing –SWEAP Antennas – as mechanical elements – can be tested separately 7

8. June 16, 2015SPP/FIELDS SOC CDR: Integration & Test Interfaces Interface tests verify interfaces meet requirements from ICD and/or specifications. FIELDS ETU well tested with APL S/C mini emulators FIELDS FM to be tested with APL S/C full emulators FIELDS TDS ETU/FM to be tested with SWEAP (at UCB) At other times (prior to Observatory I&T) interfaces simulated with GSE –Board, Component level tests performed with Board Interface Simulation GSE –Instrument-level tests performed with: APL-provided spacecraft emulators Command and Telemetry GSE software Stimulation GSE or internal test signal SWEAP simulator (FIG) Deployment actuator simulators –GSE functionality, design described in GSE section 8

9. June 16, 2015SPP/FIELDS SOC CDR: Integration & Test Mechanical Testing Antenna mechanisms can be tested independently of electronics Full functional testing Vibration TV Where appropriate, testing will include whips FIELDS Contamination Control Plan documents how FIELDS will meet Project contamination control requirements 9

10. June 16, 2015SPP/FIELDS SOC CDR: Integration & Test Thermal Testing Tests per SPP Environmental Spec –1 survival and 6 operational thermal vacuum cycles –Temperature ranges detailed in thermal presentation Per FIELDS V&V and T&C plan –V1-V4 PAs in one range –V5 PA in one range –MAG sensors (at GSFC) –SCM assembly (at LPC2E) –MEP is the simplest Includes all sensors –Antenna mechanisms Proposed Thermal Balance test using ETU FIELDS boom and ETU sensors – fall 2015 10

11. June 16, 2015SPP/FIELDS SOC CDR: Integration & Test EMC Tests Tests per EMECP Electro-Static Discharge Test (EM only) DC Magnetics (sniff test) Surface Charging / Electrostatic Cleanliness Ground Bonding and Isolation Turn On/Off Transients CE, CS, RE, RS Tests as detailed in EMECP –ETU will only do CE measurements on the bench ✔ 11

12. June 16, 2015SPP/FIELDS SOC CDR: Integration & Test S/C-level I&T FIELDS and APL have had discussions w/r/t S/C level I&T FIELDS integration will involve a number of hardware elements (~20) FIELDS magnetic sensors will have protective enclosures FIELDS will have external stimulus to support CPT functional testing Antennas will not be deployed at Spacecraft level –Too hard to implement off-loading GSE at spacecraft level –First motion without whips Actuator simulators will be provided to perform simulated boom deployments –Simulators contain flight-like resetable actuators (or equivalent loads) –Simulators attach to S/C deployment harnessing –Simulators can be used at spacecraft-level TV 12

13. June 16, 2015SPP/FIELDS SOC CDR: Integration & Test FIELDS Flight Configuration 13

14. June 16, 2015SPP/FIELDS SOC CDR: Integration & Test FIELDS Bench Testing Configuration 14

15. June 16, 2015SPP/FIELDS SOC CDR: Integration & Test FIELDS CPT Configuration 15

16. June 16, 2015SPP/FIELDS SOC CDR: Integration & Test FIELDS Flight Configuration 16 SOC

17. June 16, 2015SPP/FIELDS SOC CDR: Integration & Test GSE Evolution SOC development will flow naturally from GSE GSE and GSEOS are fully functional with FIELDS EM –FIELDS1 and FIELDS2 EMs GSE and GSEOS will continue with FM development –At all hardware institutions UCB, UMN, LASP, GSFC –Used for all commanding FIELDS1/FIELDS2 –Used for acquiring all telemetry FIELDS1/FIELDS2 –Will move with us to APL for S/C level I&T GSE and GSEOS will evolve into components of SOC after launch –Used to build, test and send command loads –Used to operate EM test-beds at UCB and UMN 17

18. June 16, 2015SPP/FIELDS SOC CDR: Integration & Test Commissioning - 1 FIELDS has a number of critical steps in the commissioning period Deployment of the magnetometer boom (day ~3) –Turn on and check out FIELDS MEP –Turn on and check out FIELDS MAGs Command for high rate MAG data –Turn on and check out FIELDS SCM Command for SCM configuration –Gather background data - stowed –Deploy MAG Boom –Gather background data - deployed 18

19. June 16, 2015SPP/FIELDS SOC CDR: Integration & Test Commissioning - 2 Deployment of the V1234 Antennas (day ~30) –Turn on and check out FIELDS MEP Command for data acquisition –Deploy Antennas Deploy V1 –Gather background data - stowed –Deploy V1 –Gather background data – deployed Deploy V2 –Gather background data - stowed –Deploy V2 –Gather background data - deployed Deploy V3 –Gather background data - stowed –Deploy V3 –Gather background data - deployed Deploy V4 –Gather background data - stowed –Deploy V4 –Gather background data – deployed –Survey deployed antenna beam patterns 19

20. June 16, 2015SPP/FIELDS SOC CDR: Integration & Test Commissioning - 3 Observe Probable Interference from TWTA (day ~30) –Start TWTA X-band contact –Turn on FIELDS MEP Command for data acquisition –Turn off TWTA –Send FIELDS science data to spacecraft SSR –Turn on TWTA by timed command –Playback recorded data –Repeat 20

21. June 16, 2015SPP/FIELDS SOC CDR: Integration & Test Commissioning - 4 Observe Interactions with Other SPP Instrument (day ~40) –Start TWTA X-band contact –Turn on FIELDS MEP Command for data acquisition –Turn on SWEAP Test inter-instrument interface Run in noisy mode –Turn on EPI (2) Run in noisy mode –Turn on WISPR Run in noisy mode –Repeat in reverse order looking for interference 21

22. June 16, 2015SPP/FIELDS SOC CDR: Integration & Test Commissioning - 5 Observe Interactions with SPP Spacecraft (day TBD) –Start TWTA X-band contact –Turn on FIELDS MEP Command for data acquisition –Turn on other instruments as desired –Run reaction wheel speed program –Run SA flap and feather –Run HGA motion survey –Repeat - looking for interference 22

23. June 16, 2015SPP/FIELDS SOC CDR: Integration & Test Commissioning - 6 Observe SPP Spacecraft Attitudes (day TBD) –Start TWTA X-band contact –Turn on FIELDS MEP Command for data acquisition –Turn on other instruments as desired –Run some rolls – fast –Run some slews Run a roll while slewed –Repeat 23

24. June 16, 2015SPP/FIELDS SOC CDR: Integration & Test Conclusion Instrument I&T plans are in good shape –Previous experience helps Spacecraft I&T plans are getting started –Previous experience helps here too FIELDS SOC is ready to move forward 24