Embedded Files
This page contains a list of verification activities and links their evidence.
Verified Activities
Verified Activities
Activities that were verified during Phases A, B, C, or D
V-POW-0001
V-POW-0001
Review design to verify that the power subsystem can provide sufficient power for at least 3 months in orbit.
Verified: Phase C
design page https://sites.google.com/site/manitobasat1/subsystems/power/power-design#h.hd17cli60vrp
power budget https://sites.google.com/site/manitobasat1/subsystems/power/power-budget#h.z8tjl084e5zm
V-POW-0002
V-POW-0002
Perform dynamic power analysis to verify that the Power Subsystem can provide sufficient power for at least 3 months in orbit.
Verified: Phase C
verified with the margins used for analyses: https://sites.google.com/site/manitobasat1/subsystems/power/power-analysis#h.p_FPijZl2q_Anq
V-POW-0003
V-POW-0003
Verify by reviewing programmatic documents to confirm that all work was led by students.
Verified: Phase C
playbook
V-POW-0004
V-POW-0004
Review design to verify that the power subsystem design provides a reliability of at least 80%. by using automotive or space grade parts.
Verified: Phase C
based on parts list all parts are either space grade or automotive grade https://docs.google.com/spreadsheets/d/19ePosxMieDmOCtYL3sXxmIGgYtRV4zDfLJSXK9ivTyU/edit?usp=sharing
V-POW-0005
V-POW-0005
Review design to verify that the primary power source on the satellite is solar arrays.
Verified: Phase B
https://sites.google.com/site/manitobasat1/subsystems/power#h.p_JVTDuv1F7mlK
V-POW-0009
V-POW-0009
Review power design/architecture to verify 3 sun-facing solar panels with 5 (total) strings of 3 cells each.
Verified: Phase C
https://sites.google.com/site/manitobasat1/subsystems/power/power-design#h.8nj382ow6hth
V-POW-0010
V-POW-0010
Inspect that the spacecraft has 3 sun-facing solar panels with 5 (total)strings of 3 cells each. remove 3: Inspect that the spacecraft sun-facing solar panels have 5 (total)strings of 3 cells each
V-POW-0020
V-POW-0020
Review power design/architecture to verify 1 non-sun-facing solar panel with 2 (total)strings of 6 cells.
Verified: Phase C / Partially Compliant
there are 2 non-sun-facing solar panels with a total of 2 strings (6 cells) https://sites.google.com/site/manitobasat1/subsystems/power/power-design#h.8nj382ow6hth
satellite assembly : https://sites.google.com/site/manitobasat1/subsystems/mechanical-structural/structural-icd-overview#h.p_2EMN9MtgbmKs
V-POW-0021
V-POW-0021
Inspect the spacecraft that each of the wings has 1 panel with 2 strings (6 cells in total )
V-POW-0040
V-POW-0040
Inspect the certificate of conformance that the solar cells are azurspace triple junction solar cells, Determine from the data sheet the end of life efficiency of the solar cells and confirm that it is greater than 12.5%., the dimensions are appropriate
Verified: Phase D
Verified by inspecting the documents provided by AZUR SPACE upon delivery of the cells. https://sites.google.com/site/manitobasat1/subsystems/power/solar-cell-design-and-testing#h.n5j2ogt6krw5
V-POW-0050
V-POW-0050
Verify through inspection of the actual solar cells that solar panel cells have the nominal dimensions of 69.1 x 39.7 mm (+/-0.05mm)
Verified: Phase D
page 7 (acceptance test report): https://sites.google.com/site/manitobasat1/subsystems/power/solar-cell-design-and-testing#h.n5j2ogt6krw5
V-POW-0090
V-POW-0090
Verify by inspection that solar panel cells are azurspace triple junction Solar cells
Verified: Phase D
Verified by inspecting the documents provided by AZUR SPACE upon delivery of the cells. https://sites.google.com/site/manitobasat1/subsystems/power/solar-cell-design-and-testing#h.n5j2ogt6krw5
datasheet: https://drive.google.com/file/d/1IatJzdaieeVGSvMOesq373TjTLX3Y6Cv/view?usp=sharing
V-POW-0093
V-POW-0093
Verify by review that the power subsystem simulator is based on direct energy transfer.
Verified: Phase B
Power Simulation by Varsha
https://sites.google.com/site/manitobasat1/subsystems/power/power-analysis#h.p_V0bFx1waeMD-
V-POW-0094
V-POW-0094
Review power schematics to confirm that transfer of energy takes place using DET
Verified: Phase C
https://sites.google.com/site/manitobasat1/subsystems/power/power-design#h.8nj382ow6hth
V-POW-0095
V-POW-0095
Inspect the circuitry to confirm that the switches are placed such that DET is taking place using EM board
Verified: Phase D
According to circuit schematics: https://sites.google.com/site/manitobasat1/subsystems/power/power-design-schematics#h.dbato6a9izvc
V-POW-0096
V-POW-0096
Look at the parts list to confirm that the battery in use is the LFP-18650HT and there are 6 of them
Verified: Phase C
6 of the cells are used for flight. A total of 24 cells are available: https://docs.google.com/spreadsheets/d/19ePosxMieDmOCtYL3sXxmIGgYtRV4zDfLJSXK9ivTyU/edit?usp=sharing
V-POW-0097
V-POW-0097
Perform power budget analysis and identify the EOL DOD in the worst and peak consumption cases and verify that it is less than 50% in normal operations
Verified: Phase C
https://sites.google.com/site/manitobasat1/subsystems/power/power-budget#h.z8tjl084e5zm
V-POW-0098
V-POW-0098
Review the parts list to confirm that there are 7 load switches and they are MOSFET (6 switches for ADCS, PLD, COMS, CDH, ANT-DPL, SOL-DPL and one regulator for DATEC heater)
Verified: Phase C
UMS-0293, UMS-0284: https://docs.google.com/spreadsheets/d/19ePosxMieDmOCtYL3sXxmIGgYtRV4zDfLJSXK9ivTyU/edit?usp=sharing
V-POW-0099
V-POW-0099
Review using the power simulator to verify that the solar arrays produce power used by the subsystems during simulations
Verified: Phase C
Power Simulation by Varsha https://sites.google.com/site/manitobasat1/subsystems/power/power-analysis#h.p_FPijZl2q_Anq
Power budget: https://sites.google.com/site/manitobasat1/subsystems/power/power-budget#h.z8tjl084e5zm
V-POW-0100
V-POW-0100
Verify design, schematics to confirm that the batteries are used with configuration 2S3P
Verified: Phase C
https://sites.google.com/site/manitobasat1/subsystems/power/power-design#h.8nj382ow6hth
V-POW-0101
V-POW-0101
Inspect that the power subsystem uses six 9736-LFP-18650HT batteries with a 2S3P configuration,
Verified: Phase D
verified using EM battery pack.
V-POW-0110
V-POW-0110
Confirm that the batteries have the capacity to store generated power using static power budget and dynamic power simulations.
Verified: Phase C
https://sites.google.com/site/manitobasat1/subsystems/power/power-budget#h.z8tjl084e5zm
V-POW-0120
V-POW-0120
Review simulator design to confirm that the battery unit has 6 individual battery cells in 2-Series-3-Parallel (2S3P) configuration
Verified: Phase C
Power Simulation by Varsha
https://sites.google.com/site/manitobasat1/subsystems/power/power-analysis#h.p_V0bFx1waeMD-
V-POW-0140
V-POW-0140
Verify using the power simulator that the battery has an end of life depth of discharge no more than 50% during peak eclipse periods and peak power consumption
Verified: Phase C
Power Simulation by Varsha https://sites.google.com/site/manitobasat1/subsystems/power/power-analysis#h.p_FPijZl2q_Anq
Power budget https://sites.google.com/site/manitobasat1/subsystems/power/power-budget#h.z8tjl084e5zm
V-POW-0150
V-POW-0150
Check if load switches are MOSFET switches by inspection of datasheet and confirm that there are 7 physical switches on the CCA.
Verified: Phase D
V-POW-0151
V-POW-0151
Check if there are 7 independent load switches and the selected load switches are MOSFET switches by looking at design and from schematics
Verified: Phase B
https://sites.google.com/site/manitobasat1/subsystems/power/power-design-schematics#h.dbato6a9izvc
V-POW-0160
V-POW-0160
Verify that the 7 load switches don't take more than 2 ms to turn on. This is a test with the EM
Verified: Phase D / Non-compliant (one switch took more than 2 ms)
By testing with EM board https://sites.google.com/site/manitobasat1/subsystems/power/power-assembly-and-testing/eps-electronic-boards-testing#h.z790l28kodee
V-POW-0161
V-POW-0161
Look at the datasheet to verify that when switched on, the 7 load switches don't take more than 2 ms to turn on.
Verified: Phase C
page 8 of the datasheet https://drive.google.com/file/d/1MZzpv3PwPXgEtWDY9jZjGb2NO_teU6oD/view?usp=sharing
V-POW-0170 (parent says 200 us, mission level says generate power autonomously )
V-POW-0170 (parent says 200 us, mission level says generate power autonomously )
Verify that when switched off, the 7 load switches don't take more than 200 ms. This is a test with the EM
Verified: Phase D
By testing with EM board https://sites.google.com/site/manitobasat1/subsystems/power/power-assembly-and-testing/eps-electronic-boards-testing#h.glwh96s67l85
V-POW-0171
V-POW-0171
Look at the switches datasheet to verify that when switched off, the 7 load switches don't take more than 200 ms.
Verified: Phase C
based on page 8 of the datasheet https://drive.google.com/file/d/1MZzpv3PwPXgEtWDY9jZjGb2NO_teU6oD/view?usp=sharing
V-POW-0180
V-POW-0180
Verify that the power consumed by the PCU doesn't exceed 0.55 W using the dynamic power simulator.
Verified: Phase C
Power Simulation by Varsha https://sites.google.com/site/manitobasat1/subsystems/power/power-analysis#h.p_FPijZl2q_Anq
V-POW-0181
V-POW-0181
Verify that the power consumed by the PCU doesn't exceed 0.55 W per orbit by static power budget analysis.
Verified: Phase C
https://sites.google.com/site/manitobasat1/subsystems/power/power-analysis#h.p_8tM72Lb6zFDl
V-POW-0191
V-POW-0191
Review the schematics to ensure that the load switches are connected to every subsystem including technology demonstration components namely torque rods, sun sensors and provide unregulated voltage of greater than 6.4 V at SOC > 40% to meet the power conditioning requirements of all subsystems. Switches shall provide regulated 3.3V for the DATEC heater.
Verified: Phase C
https://sites.google.com/site/manitobasat1/subsystems/power/power-design-schematics#h.dbato6a9izvc
V-POW-0200
V-POW-0200
Perform dynamic power simulations to confirm that the solar array generates 11.12 Watts when +X face is within 10 degrees of the sun vector
Verified: Phase C
Power Simulation by Varsha https://sites.google.com/site/manitobasat1/subsystems/power/power-analysis#h.p_FPijZl2q_Anq
V-POW-0220
V-POW-0220
Verify by reviewing the schematics that the power subsystem has a watchdog circuit in place to deal with single event upsets.
Verified: Phase C
EPS Schematics https://sites.google.com/site/manitobasat1/subsystems/power/power-design-schematics#h.dbato6a9izvc
V-POW-0221
V-POW-0221
Test the power subsystem watchdog circuit in place to deal with single event upsets. During the test, look at the parts in the microcontroller that are affected the most by single event upsets and if the watchdog circuit is able to sufficiently deal with the single event upsets. Turn off the core of the power subsystem and check if the watchdog circuit allows the system to reboot without any problem. This is an isolated subsystem test (EM/FM)
Verified: Phase D
verified by test: https://sites.google.com/site/manitobasat1/subsystems/power/power-assembly-and-testing/eps-electronic-boards-testing#h.pnm7c92tk5ru
V-POW-0231
V-POW-0231
Test the power subsystem mechanisms in place to recover from single event upsets. Turn off the core of the PCU and attempt rebooting. This test is with the EM (EM/FM)
Verified: Phase D
verified by test: https://sites.google.com/site/manitobasat1/subsystems/power/power-assembly-and-testing/eps-electronic-boards-testing#h.pnm7c92tk5ru
V-POW-0241
V-POW-0241
Review schematics to verify that there is a mechanism (non-volatile switches) to resume operation electrically following a hardware reset
Verified: Phase D
EPS Schematics: https://sites.google.com/site/manitobasat1/subsystems/power/power-design-schematics#h.dbato6a9izvc
V-POW-0242 (partially verified)
V-POW-0242 (partially verified)
Review PCU software to confirm that the PCU is able to resume operation following a hardware reset
in progress: software being developed
V-POW-0261
V-POW-0261
Verify that the power subsystem communicates with comms via CAN-Bus by reviewing power schematics and interface diagram and confirming that there is a CAN bus connection with comms.
Verified: Phase C
page3 https://drive.google.com/file/d/1YB1xIoX-vosYctnxvlWGo9BhfDRMvrWu/view
V-POW-0262
V-POW-0262
Verify that the power subsystem communicates with COMS via CAN-Bus. BY LOOKING AT THE DATA ARCHITECTURE DIAGRAM
Verified: Phase B
https://sites.google.com/site/manitobasat1/subsystems/power/power-icd#h.p_sVuQmCIz0_Tb
V-POW-0280
V-POW-0280
Review the design page for power to verify that power and CDH communicate in accordance with CSP
Verified: Phase B
https://sites.google.com/site/manitobasat1/subsystems/flight-software#h.p_3cfTmuYxOFie
V-POW-0282
V-POW-0282
review the POW data interfaces that it uses CAN
Verified: Phase D
https://sites.google.com/site/manitobasat1/subsystems/power/power-icd#h.p_lTODojc6Y37F
V-POW-0300
V-POW-0300
Review CAD models to verify that the power subsystem hardware has interfaces to mount onto the spacecraft structure with the deployable solar arrays mounting onto the outside surface of the spacecraft structure
Verified: Phase C
V-POW-0310
V-POW-0310
Check the number of deployment switches in the structural design and if they correspond to independent electrical inhibits. CAD files
Verified: Phase D
V-POW-0380
V-POW-0380
Look at Con-ops design that the deployment switches can reset the power to the pre-launch state if cycled at any time within the first 30 minutes after the switches close.
Verified: Phase D
https://sites.google.com/site/manitobasat1/operations#h.p_SeUsKy1saRZt
V-POW-0391
V-POW-0391
Verify that the power structural design in CAD files has all batteries and capacitors internal to the cubesat.
Verified: Phase C
V-POW-0400
V-POW-0400
Look at the operations plan and verify that the satellite timer functions appropriately and has an admissible fault tolerance to help confirm that no system is operated for a minimum of 30 minutes when hazard potential exists.
Verified: Phase C
https://sites.google.com/site/manitobasat1/subsystems/power/power-design#h.hd17cli60vrp
V-POW-0410
V-POW-0410
Test to check that the satellite timer functions appropriately and has an admissible fault tolerance to help confirm that no system is operated for a minimum of 30 minutes when hazard potential exists through a simulation with the PCU software.
Verified: Phase D
Page 10 of EPS test report: https://sites.google.com/site/manitobasat1/subsystems/power/power-assembly-and-testing/eps-electronic-boards-testing#h.skkdp5dpau6n
V-POW-0420
V-POW-0420
Confirm having at least 3 independent inhibit switches actuated by physical deployment switches. by reviewing the power schematics
Verified: Phase C
https://drive.google.com/file/d/1nc-ja5xhJVlRNH0lwx2nnnmNj8Bj96iK/view?usp=sharing
V-POW-0422
V-POW-0422
Activate the inhibit switch to test if it actually isolates (no interconnecting conductors) the batteries from the negative terminal to ground in the EM model.
Verified: Phase D
V-POW-0431
V-POW-0431
Verify by looking at the schematics that there is a ground leg inhibit that doesn't allow any system to be energized by the ground leg circuit
Verified: Phase C
https://drive.google.com/drive/folders/1mkWz7SU7WrsTCnunwqEFz84nGHfshpko?usp=sharing
V-POW-0440
V-POW-0440
Verify by review that the remove before flight feature is available in the architectural design and schematics and precludes any power from reaching the systems. It keeps the spacecraft in an unpowered state during ground handling and integration into the deployer.
Verified: Phase D
as shown in the detailed block diagram; https://sites.google.com/site/manitobasat1/subsystems/power/power-design#h.8nj382ow6hth
V-POW-0450
V-POW-0450
Verify by inspection that the remove before flight feature is available during the ground handling and integration process into the Nanoracks deployer.
NOT Verified: Phase D (needs fit check test of fully assembled satellite)
V-POW-0490
V-POW-0490
Confirm by reviewing harnessing diagram/table in the assembly plan that the EPS has no more than 6 inches of wire 26AWG or larger between the battery and the first electrical inhibit.
NOT Verified: Phase D (needs updated Harnessing diagram)
https://docs.google.com/document/d/1UejV4jRzdwwC--WysCgnMRhvxKcjj3FG2miQ6VilIG0/edit?usp=sharing
V-POW-0540
V-POW-0540
Confirm that the protection circuitry and safety features are implemented at the cell level and function appropriately to prevent internal and external short circuits. by reviewing the certificate of conformance
Verified: Phase D / Non-compliant
was done by reviewing schematics, datasheets and testing: https://sites.google.com/site/manitobasat1/subsystems/power/power-assembly-and-testing/em-battery-pack#h.4s14vhbdh2fi
V-POW-0550
V-POW-0550
Confirm (inspect) implementation of protection circuitry against overvoltage and undervoltage of battery cells
Verified: Phase D
V-POW-0560
V-POW-0560
Test protection circuitry to respond to overvoltage and undervoltage conditions of the battery cells. This test is with the EM battery
Verified: Phase D
V-POW-0580
V-POW-0580
Verify that all parts selected for the power subsystem adhere to Nanoracks hazardous material specifications
Verified: Phase C
BOM https://sites.google.com/site/manitobasat1/subsystems/power/power-design-schematics#h.18mjehprf2xb
V-POW-0585
V-POW-0585
Verify by looking at the parts list that no systems or components subject to ITAR control are used.
Verified: Phase C
https://sites.google.com/site/manitobasat1/subsystems/power/power-design-schematics#h.bjl27qr5tzpg
V-POW-0590
V-POW-0590
Verify that all parts selected for the power subsystem have a total mass loss of less than 1% to prevent outgassing and external contamination by referring to NASAs outgassing data online. Check presence of any material that violates outgassing requirements
plan: check the batteries, solar cells, PCBs, cables. any other component shall be conformally coated. make sure right type of coating is used
V-POW-0601
V-POW-0601
Look at the schematics to confirm that all components are electrically bonded per SSP 30245 to prevent electrical shock and static discharge hazards
make sure all the live lines have female connectors. design review. ask microart and put it on wiki
V-POW-0621
V-POW-0621
Look at the engineering drawings for the power module and CubeSat assembly with the deployer in the structure ICD to ensure that there are no electrical interfaces between the power subsystem and the deployer or that the structure of the power subsystem is electrically isolated from the deployer.
Verified: Phase C
verified by design: Iris Project - Structural ICD Overview (google.com)
pow block diageam https://sites.google.com/site/manitobasat1/subsystems/power/power-design#h.8nj382ow6hth
V-POW-0630
V-POW-0630
Look at the ground leg inhibit scheme circuit schematics to confirm that the inhibit disconnects the batteries from the negative terminal to ground.
Verified: Phase C
page13 https://drive.google.com/file/d/1htr4HllojlcOW-E5ZuOT7MCBIU8NsM3w/view
V-POW-0631
V-POW-0631
Inspect the final circuit to confirm that the isolation system is located between the battery's negative terminal and ground such that the ground leg inhibit that disconnects the batteries along the power line from the negative terminal to ground.
Verified: Phase D
V-POW-0640
V-POW-0640
Review import condition documentation and the parts list to confirm that none of the imported products violate conditions.
Verified: Phase C
Parts List for the Power Subsystem - Google Sheets
https://sites.google.com/site/manitobasat1/subsystems/power/power-design-schematics#h.bjl27qr5tzpg
V-POW-0650
V-POW-0650
Look/review (at) the power module CAD on the structural ICD to check that it has no components internal to the CubeSat are no longer than 92 mm in length in the X and Y axes.
Verified: Phase C
https://sites.google.com/site/manitobasat1/subsystems/power/power-design-schematics#h.ab3dq8el1buh
V-POW-0651 (separate into 3 activities)
V-POW-0651 (separate into 3 activities)
Review drawings of the battery saddle, drawings of the CCAs, and the battery cells' datasheet to confirm that no component is longer than 92 mm along the X and Y axes.
Verified: Phase C
battery saddle: https://sites.google.com/site/manitobasat1/subsystems/mechanical-structural/structural-icd-overview#h.p_H-N-1P8cEy6x
CCA drawings: https://sites.google.com/site/manitobasat1/subsystems/power/power-design-schematics#h.ab3dq8el1buh
Cells' datasheets: https://sites.google.com/site/manitobasat1/subsystems/power/components-datasheet#h.jax2mkw85w61
V-POW-0660
V-POW-0660
Review power schematics and confirm that there is a switch available for deployables which provides power to the redundant firing and holding systems.
Verified: Phase C
page18 https://drive.google.com/file/d/1htr4HllojlcOW-E5ZuOT7MCBIU8NsM3w/view
V-POW-0661
V-POW-0661
Look at the static power budget to make sure that there is enough power allocated to deployable redundant firing and holding systems.
Verified: Phase B
https://sites.google.com/site/manitobasat1/subsystems/power/power-analysis#h.p_8tM72Lb6zFDl
V-POW-0662
V-POW-0662
Perform dynamic power simulations to show that there is sufficient power for deployable redundant firing and holding systems (burn-wire mechanism).
Verified: Phase C
https://sites.google.com/site/manitobasat1/subsystems/power/power-analysis#h.p_FPijZl2q_Anq
V-POW-0669 (shuffle mass budget? )
V-POW-0669 (shuffle mass budget? )
Check the mass budget to verify that the power subsystem components' non-structural mass does not exceed 871 grams.
Verified: Phase C / Non-compliant
total mass= 908.8gm: https://sites.google.com/site/manitobasat1/subsystems/mechanical-structural#h.p_dS82XbFV14tf
V-POW-0679
V-POW-0679
Perform a test with the EM to verify that current and voltage telemetry is relayed from the solar arrays, load switches and battery to the PCU. Solar array telemetry will be simulated
Verified: Phase D
V-POW-0680
V-POW-0680
Review the power schematics to check if there are enough sensors (signals) to send current and voltage values from each of the solar panel strings, the battery and load switches to the power control unit
Verified: Phase C
Schematics - Google Drive // not goood
https://sites.google.com/site/manitobasat1/subsystems/power/power-design-schematics#h.dbato6a9izvc
V-POW-0710 (in progress )
V-POW-0710 (in progress )
Check by inspection that the physical fasteners used to attach the subsystem components have a thread size of 2-56, 4-40, or 6-32
Verified: Phase D / Non-compliant
V-POW-0711
V-POW-0711
Check that fasteners used to attach the subsystem components have a thread size of 2-56, 4-40, or 6-32 by reviewing the parts list
Verified: Phase D
V-POW-0715 (split into 2: 1) intentional and not intentional parts(battery))
V-POW-0715 (split into 2: 1) intentional and not intentional parts(battery))
Look at the power schematics and parts list to ensure that there are no detachable parts including when failure might occur.
mention the 2 holding mechanisms for it
Verified: Phase C
Parts List for the Power Subsystem - Google Sheets
V-POW-0740
V-POW-0740
Look at the detailed BOM and final parts list to confirm that the power system does not contain any pyrotechnics
Verified: Phase C
Bill of materials (Power subsystem) - Google Sheets
V-POW-0741
V-POW-0741
Check the preliminary BOM and parts list to ensure that the power system does not contain any pyrotechnics
Verified: Phase B
https://docs.google.com/spreadsheets/d/19ePosxMieDmOCtYL3sXxmIGgYtRV4zDfLJSXK9ivTyU/edit?usp=sharing
V-POW-0750 (add INT requirement that has a MECH child)
V-POW-0750 (add INT requirement that has a MECH child)
Look at the engineering drawings on the structural ICD for the complete spacecraft assembly in the deployer to confirm that the solar panels dimensions don't exceed the deployer dimensions when stowed.
V-POW-0770
V-POW-0770
Review the power subsystem test plan to ensure that it reflects all verification activities provided in the nanoracks/NASA test plan
Verified: Phase C
https://docs.google.com/document/d/1UejV4jRzdwwC--WysCgnMRhvxKcjj3FG2miQ6VilIG0/edit
V-POW-0781 (Needs respond from nanoracks)
V-POW-0781 (Needs respond from nanoracks)
Review the playbook work packages (Phase C and D) for the power subsystem to confirm that preparing the battery design and safety verification plan are in the schedule and battery tests are scheduled appropriately.
Verified: Phase B & Phase D
Playbook
V-POW-0790
V-POW-0790
Review the parts list to confirm that there are no coin cells
Verified: Phase C
https://docs.google.com/spreadsheets/d/19ePosxMieDmOCtYL3sXxmIGgYtRV4zDfLJSXK9ivTyU/edit?usp=sharing
V-POW-0820 (make INT to MECH)
V-POW-0820 (make INT to MECH)
Review the structure ICD to confirm that there exists an independent restraint mechanism (burn wire) for the solar panels to let them be stowed during launch.
Verified: Phase B
Iris Project - Structure (google.com)
V-POW-0821 (make INT to MECH)
V-POW-0821 (make INT to MECH)
Look at the engineering drawings and CAD models for the power module on the power and structure ICDs to confirm that the three-axis orientation system defined by Nanoracks is used.
Verified: Phase C / Non-compliant
V-POW-0870
V-POW-0870
Confirm by reviewing the power block diagram on the power ICD that the battery has two thermistors.
Verified: Phase C
https://sites.google.com/site/manitobasat1/subsystems/power/power-icd#h.2d75n0bfxkh
V-POW-0880
V-POW-0880
Review the PCU schematics to ensure that the PCU has the capability to read the temperature data from the thermistors and send it to CDH through the CAN bus.
Verified: Phase C
page3 https://drive.google.com/file/d/1YB1xIoX-vosYctnxvlWGo9BhfDRMvrWu/view
V-POW-0881 (add the software, isolated and flatsat activities)
V-POW-0881 (add the software, isolated and flatsat activities)
Look at CDH information document to confirm that design requires the power control unit to relay data from the thermistors to the CDH system
Verified: Phase B
https://sites.google.com/site/manitobasat1/subsystems/c-dh#h.p_EdJF9eU--PYQ
V-POW-0900
V-POW-0900
Review power schematics for the solar panels on the power design page to confirm that there are 8 data connections from the solar panels to the PCU to read thermal sensors.
Verified: Phase C
Page 9: https://drive.google.com/file/d/1YB1xIoX-vosYctnxvlWGo9BhfDRMvrWu/view?usp=sharing
PCB render: https://drive.google.com/file/d/1IBM1Z-YcNEz1JcVYiTDbuVrSwUMpfjqT/view?usp=sharing
V-POW-0910
V-POW-0910
Review the circuitry schematics to make sure that all grounds on the spacecraft meet at one point.
Verified: Phase C
connection to STR: https://sites.google.com/site/manitobasat1/subsystems/power/power-assembly-and-testing/power-shell-assembly#h.v5e26dfbi4p2
EPS Schematics: page1 https://drive.google.com/file/d/1plyvTNu4z0a3c2v-ncSmyN24R8oThgYb/view?usp=sharing
V-POW-0920
V-POW-0920
Confirm after reviewing the operations plan and load-shedding plan that the real time clock is the only component on during the post-ejection hold.
Verified: Phase B
https://sites.google.com/site/manitobasat1/subsystems/power/power-design#h.8gawm07jbtbx (change font in table 1)
V-POW-0922
V-POW-0922
Review operations plan and load shedding plan in phase C to confirm that during post-ejection, only real-time clock will be on
Verified: Phase C
https://sites.google.com/site/manitobasat1/operations#h.p_ID_60
V-POW-0923
V-POW-0923
Perform a test with the PCU software and the EM power module to confirm that PCU is able to restrict power to itself and the load switches are all open providing no power to other subsystems
Verified: Phase D
V-POW-0941 (NOT IN THE RIGHT PLACE)
V-POW-0941 (NOT IN THE RIGHT PLACE)
Review the commissioning plan to confirm that the solar panels deployment at the end of the detumbling mode.
Verified: Phase B
https://sites.google.com/site/manitobasat1/operations#h.p_zyHMnJsAFC-9
V-POW-1000
V-POW-1000
Inspect the FM cells for any deformations such as scrapes, bulges, and dents with the cell wrappings removed where possible NOT VERIFIED
V-POW-1001
V-POW-1001
Measure and record the length, width, and height of the EM cells with 0.1mm precision
Verified: Phase D
V-POW-1002
V-POW-1002
Measure and record the mass of each EM cell with 0.1g precision
Verified: Phase D / Non-Compliant (Precision = 1gr)
V-POW-1003
V-POW-1003
Measure and record the Open Circuit Voltage (OCV) between 20% - 80% charge on the engineering model cells using a multi-meter with 0.1 V precision. (What are we doing this for? clarify what is good? )
Verified: Phase D / Non-Compliant
Page 6: measured at 30%: https://sites.google.com/site/manitobasat1/subsystems/power/power-assembly-and-testing#h.mttxnvz9hons
V-POW-1020
V-POW-1020
Perform simulations to confirm the battery's state of charge doesn't go below 80% during the mission lifetime (2 years).
Verified: Phase B
https://sites.google.com/site/manitobasat1/subsystems/power/power-analysis#h.p_FPijZl2q_Anq
V-POW-1030
V-POW-1030
Review design to confirm that the power subsystem is designed such that no combination of two failures, two operator errors (or one of each), can cause a disabling or fatal personnel injury or loss of one of the following: loss of ISS, loss of a crew-carrying vehicle, or loss of major ground facility
Verified: Phase C
based on risk registry: https://sites.google.com/site/manitobasat1/subsystems/power/power-analysis#h.yzsz8oprczwd
V-POW-1032
V-POW-1032
Perform failure mode analysis to find all possible failures and how they are prevented in the design to confirm that no combination of two failures, two operator errors (or one of each), can cause a disabling or fatal personnel injury or loss of one of the following: loss of ISS, loss of a crew-carrying vehicle, or loss of major ground facility can take place
Verified: Phase C
based on risk registry: https://sites.google.com/site/manitobasat1/subsystems/power/power-analysis#h.yzsz8oprczwd
V-POW-1041
V-POW-1041
Perform failure mode analysis to identify possible failures and confirm that there are provisions in the design such that no single failure or single operator error can cause a non-disabling personnel injury or illness, loss of a major ISS element, loss of redundancy (i.e. with only a single hazard control remaining) for on-orbit life sustaining function, or loss of use of the Space Station Remote Manipulator System (SSRMS) can take place.
Verified: Phase C
based on risk registry: https://sites.google.com/site/manitobasat1/subsystems/power/power-analysis#h.yzsz8oprczwd
V-POW-1042
V-POW-1042
Review design documentation to ensure that no single failure or single operator error can cause a non-disabling personnel injury or illness, loss of a major ISS element, loss of redundancy (i.e. with only a single hazard control remaining) for on-orbit life sustaining function, or loss of use of the Space Station Remote Manipulator System (SSRMS) can take place.
Verified: Phase C
based on risk registry: https://sites.google.com/site/manitobasat1/subsystems/power/power-analysis#h.yzsz8oprczwd
V-POW-1043
V-POW-1043
Review design to confirm that the CSA physical 30 minute timer circuit is implemented ask Hafis if this is provided by CSA
Verified: Phase C
https://sites.google.com/site/manitobasat1/subsystems/power/power-design#h.8nj382ow6hth
V-POW-1044
V-POW-1044
Review battery data sheet to confirm that it can be stored without charging for 3 months
Verified: Phase C / Non-compliant
the datasheet suggests SoC = 30% before shipping, and charge/discharge cycle every 3 months https://sites.google.com/site/manitobasat1/subsystems/power/components-datasheet#h.jax2mkw85w61
V-POW-1046
V-POW-1046
Review that power is on hold for all systems during 30 minutes of foot switch release. There should be an inhibit scheme to implement this.
Verified: Phase C
https://drive.google.com/file/d/1nc-ja5xhJVlRNH0lwx2nnnmNj8Bj96iK/view?usp=sharing
V-POW-1050
V-POW-1050
Review CAD models for power module to verify that there are no external power components (inhibit switches) have sharp edges
Verified: Phase C
Iris Project - Structural ICD Overview (google.com) (Jesse update wiki stating no sharp edges exist)
V-POW-1063
V-POW-1063
Look at the harnessing layouts to verify if the circuit interrupters in the design are located in the ground (negative) leg of a battery where the negative terminal is connected to ground.
Verified: Phase D
as shown in the detailed block diagram: https://sites.google.com/site/manitobasat1/subsystems/power/power-design#h.8nj382ow6hth
V-POW-1070 (update from vali)
V-POW-1070 (update from vali)
Look at the harnessing layouts to verify if the circuit interrupters in the design are placed as close to the cell or battery terminals.
Verified: Phase D
as shown in the harness diagram the wire lengths are selected to be as short as possible: https://drive.google.com/file/d/1InC1AtRYjOAaUCO47OXgqaVu1e5xVF7x/view
V-POW-1080
V-POW-1080
Look at the bill of materials to verify that all inner surfaces of metal battery enclosures are anodized and/or coated with a non-electrically conductive electrolyte-resistant paint
Verified: Phase C
Internal surfaces are anodized aluminum. https://sites.google.com/site/manitobasat1/subsystems/power/power-design-schematics#h.18mjehprf2xb
V-POW-1120
V-POW-1120
Review from the battery datasheet & configuration that the battery design doesn't have a rating greater than 50 VDC .
Verified: Phase B
(its 6.4 V) https://sites.google.com/site/manitobasat1/subsystems/power/power-design#h.y3t2x8bj28qr
V-POW-1130
V-POW-1130
Inspect the certificate of conformance for the charger from the manufacturer to ensure that the charging equipment has at least 2 low levels of control or confirm that no charging of the battery will occur at Nanoracks.
Verified: Phase D
By reviewing datasheet: The charger has over current, over voltage, reverse polarity, and short circuit protection charger.pdf - Google Drive
V-POW-1150 (split into 4 activities) don't duplicate
V-POW-1150 (split into 4 activities) don't duplicate
Review datasheets of the circuit interrupters to ensure that the circuit interrupters' design and placement follows all constraints placed by Nanoracks.
Verified: Phase C
Efuse datasheets (TPS2596): Datasheets - Google Drive
protection circuit: https://sites.google.com/site/manitobasat1/subsystems/power/power-assembly-and-testing/em-battery-pack#h.4s14vhbdh2fi
V-POW-1180
V-POW-1180
Review the battery saddles engineering drawings on the structure ICD to confirm that there are two battery heaters.
Verified: Phase B
UMS-0072 and UMS-0042: https://sites.google.com/site/manitobasat1/subsystems/power/power-assembly-and-testing/power-shell-assembly#h.a4kd509y1vab
V-POW-1181
V-POW-1181
Review the power subsystems parts list to confirm that there are two battery heaters.
Verified: Phase B / Non-compliant (heaters are not listed in Power parts list. they are in Thermal list)
UMS-0072 and UMS-0042: https://sites.google.com/site/manitobasat1/subsystems/power/power-assembly-and-testing/power-shell-assembly#h.a4kd509y1vab
V-POW-1182
V-POW-1182
Perform power simulations to confirm that there is 1.5 +-0.3 W power for the battery heaters
Verified: Phase B
a max of 1.4W and an average of 0.7W/orbit is allotted https://sites.google.com/site/manitobasat1/subsystems/power/power-budget#h.z8tjl084e5zm
V-POW-1183
V-POW-1183
Confirm from the static power budget that there is 1.5 W power allotted to the heaters.
Verified: Phase C
a max of 1.4W and an average of 0.7W/orbit is allotted https://sites.google.com/site/manitobasat1/subsystems/power/power-budget#h.z8tjl084e5zm
V-POW-1191
V-POW-1191
Review from the structural CAD designs that the solar arrays are on the same side/face as the payload sample window and be positioned along the +X axis.
Verified: Phase C
V-POW-1220
V-POW-1220
Review/ Look at the structural CAD models to confirm that the height of the wiring board is 5.97 mm. (update requirement to 9.52mm)
drawings show that the boards are taller: https://sites.google.com/site/manitobasat1/subsystems/power/power-design-schematics#h.ab3dq8el1buh
V-POW-1221
V-POW-1221
Inspect the assembled power wiring board by measuring the height and confirming that its lesser than or equal to 13.97 mm +-1.2mm
It's 13.53mm tall https://sites.google.com/site/manitobasat1/subsystems/power/power-assembly-and-testing/eps-electronic-boards-testing#h.skkdp5dpau6n
V-POW-1222
V-POW-1222
Review the detumbling power budget and analysis on the power analysis page to confirm that enough power is given to ADCS during detumbling. (reword so it makes more sense. meeting with york)
Verified: Phase C
https://sites.google.com/site/manitobasat1/subsystems/power/power-budget#h.3x1gli7itkm
V-POW-2004
V-POW-2004
Review power subsystem design risks and evaluate design redundancy for hazard mitigation
Verified: Phase C
https://sites.google.com/site/manitobasat1/subsystems/power/power-analysis#h.yzsz8oprczwd (add more details to it)
V-POW-2005
V-POW-2005
Review the battery hazards listed on the design risks for the power subsystem and compare them with the nanoracks document to ensure that all hazards for the battery system have been identified.
Verified: Phase C
based on battery test https://sites.google.com/site/manitobasat1/subsystems/power/power-assembly-and-testing#h.mttxnvz9hons
and nanoracks NR-SRD-139-RevD: https://drive.google.com/file/d/1i4skVKjYs287PWiR269wHI1U1LVRer9B/view?usp=sharing
and the power risk registry: https://sites.google.com/site/manitobasat1/subsystems/power/power-analysis#h.yzsz8oprczwd (UPDATE IT TO REFLECT NR-NRCSD-S0003 (Rev-) NanoRacks CubeSat Deployer IDD.pdf - Google Drive )
V-POW-2009
V-POW-2009
Review assembly plan of the power module to confirm that there exists harnessing (connector) between the PCU and the solar panels.
Verified: Phase C / Non-compliant (Solder will be used instead of connectors)
pages 25 to 28: Power Critical Design, Prototyping and Qualification Plan - Google Docs
V-POW-2013
V-POW-2013
Review power schematics for the battery on the ICD to confirm that there are two thermistors.
Verified: Phase C
https://sites.google.com/site/manitobasat1/subsystems/power/power-icd#h.2d75n0bfxkh
V-POW-2017
V-POW-2017
Inspect the final power module circuitry to ensure that there are 8 wires from the solar panel thermal sensors to the PCU responsible for 4 thermistors' values.
Verified: Phase D
Page 9 of EPSCTRL Schematics : https://sites.google.com/site/manitobasat1/subsystems/power/power-design-schematics#h.erolecgz5cw5
V-POW-2022
V-POW-2022
Perform dynamic simulations on the power subsystem simulator to confirm that sufficient power is given to ADCS during detumbling
Verified: Phase C
https://sites.google.com/site/manitobasat1/subsystems/power/power-analysis#h.p_eUP4oc1U8rlL
V-POW-2025
V-POW-2025
Review PCU software wiki page to confirm that there is a command to the power subsystem to enter idle operations
Verified: Phase C
Iris Project - EPS controller software (google.com)
// add the link to FSW wiki too
V-POW-2026
V-POW-2026
Review the operations plan to confirm that the power subsystem enters different load shedding modes according to the battery's state of charge
Verified: Phase C
https://sites.google.com/site/manitobasat1/operations#h.p_9uhvtnX4dvCa
V-POW-2029
V-POW-2029
Review power schematics to ensure that there are power lines/switches to one of the battery heaters.
Verified: Phase C
Iris Project - Power Design (google.com)
V-POW-2030
V-POW-2030
Review the battery schematics to confirm that there is a thermostat in series with the power line from the PCU.
Verified: Phase C
https://sites.google.com/site/manitobasat1/subsystems/thermal/thermal-icd#h.p_F6KkIARU7ZUr
// add the link to POWER
V-POW-2033
V-POW-2033
Review the detailed parts list of the power subsystem components to confirm that all of the components can survive in environments of temperatures -20 to 50 C
Verified: Phase C
based on the detailed parts list: https://sites.google.com/site/manitobasat1/subsystems/power/power-design-schematics#h.bjl27qr5tzpg
V-POW-2037
V-POW-2037
Review the power subsystem, especially the battery safety plan to confirm that no system shall operate for 30 minutes when hazard potential exists
Verified: Phase C
the descriptions of deployment timer: https://sites.google.com/site/manitobasat1/subsystems/power/power-design
V-POW-2039
V-POW-2039
Review the power schematics to confirm that there is a switch to provide unregulated voltage to the deployment mechanisms for the solar arrays and antenna.
Verified: Phase C
page1 https://drive.google.com/file/d/1plyvTNu4z0a3c2v-ncSmyN24R8oThgYb/view?usp=sharing
V-POW-2040
V-POW-2040
Review the static power budget to confirm that unregulated voltage is provided to the deployment mechanism (burn wire) for solar arrays and antenna.
Verified: Phase C
https://sites.google.com/site/manitobasat1/subsystems/power/power-icd#h.p_ru1XD74gdm8P
V-POW-2042
V-POW-2042
Test the thermistor with the EM power board and note the resolution of its reading. It should be 0.5 deg C
Verified: Phase C
V-POW-2043
V-POW-2043
Review wiring table in the power module assembly plan for the PCU on the design page to confirm that there are 2X wires connecting the power subsystem with the ground umbilical interface
Verified: Phase C
https://sites.google.com/site/manitobasat1/subsystems/harness/harness-icd#h.tg4teszeu63w
V-POW-2044
V-POW-2044
Review the power schematics or SBD to confirm that there are data interfaces connecting the power subsystem to the ground umbilical interface
Verified: Phase C
page 4: Power assembly plan.docx - Google Docs
// add evidence in ICD
V-POW-2047
V-POW-2047
Review the parts list and the datasheet for the fasteners to ensure that they have a hex head
Verified: Phase D / Non-Compliant (some don't have Hex head)
based on STRUCTURE ICD https://docs.google.com/spreadsheets/d/1ZYdulFtWDdX2YByLPf0cNS1qcBa_kGKaHYtYa76qzMY/edit#gid=0
V-POW-2049
V-POW-2049
Review that the CDH information sheet mentions that the power subsystem will send current readings for every solar string to CDH
Verified: Phase C
Iris Project - CDH (google.com)
V-POW-2050
V-POW-2050
Review the power schematics to confirm that there are current sensors for each of the 7 solar cell strings and that the pcu is connected to CDH via CAN bus from the power interface block diagram
Verified: Phase C
data interface: https://sites.google.com/site/manitobasat1/subsystems/power/power-icd#h.p_ru1XD74gdm8P
page 2 & 3 of Controller Schematics: https://sites.google.com/site/manitobasat1/subsystems/power/power-design-schematics#h.erolecgz5cw5
V-POW-2052
V-POW-2052
Review the PCU software protocol to ensure that there is no command to increment power modes autonomously except low, survival and critical
Verified: Phase C
https://sites.google.com/site/manitobasat1/subsystems/power/eps-controller-software#h.j46gfio5ex1o
V-POW-2053
V-POW-2053
Look at the battery datasheet and its configuration to confirm that the battery pack does not have a specific energy of greater than 80W.h.
Verified: Phase C
battery datasheet https://sites.google.com/site/manitobasat1/subsystems/power/components-datasheet#h.jax2mkw85w61
battery pack design https://sites.google.com/site/manitobasat1/subsystems/power/power-design#h.y3t2x8bj28qr
V-POW-2054
V-POW-2054
Look through the PCU software protocol to confirm that there will be software logic written that allows for the PCU to decrement power modes when required.
Verified: Phase C
https://sites.google.com/site/manitobasat1/subsystems/power/eps-controller-software#h.j46gfio5ex1o
V-POW-2056
V-POW-2056
Perform dynamic simulations with the power consumption accommodating sending at least 1 image per week to the ground for over 2 years
Verified: Phase B
https://sites.google.com/site/manitobasat1/subsystems/power/power-analysis#h.p_FPijZl2q_Anq
V-POW-2057
V-POW-2057
Review the CDH information sheet on the CDH ICD to confirm that power subsystem is capable of estimating the battery's SOC and sending it to the ground anytime
Verified: Phase C
Iris Project - EPS controller software (google.com)
V-POW-2058
V-POW-2058
Look through the power subsystem simulator's algorithm that will be incorporated in the PCU software to confirm that with voltage and current readings, it is possible to estimate the battery's state of charge at any point.
Verified: Phase C
Iris Project - EPS controller software (google.com)
V-POW-2062
V-POW-2062
Analyze the CAD model and get the mass from the CAD software and check that it is less than 871g // update the mass budget
Verified: Phase C
power sheet: total mass= 908.8gm: https://sites.google.com/site/manitobasat1/subsystems/mechanical-structural#h.p_dS82XbFV14tf
V-POW-2063
V-POW-2063
Review NASA space debris mitigation guildeline documentation and confirm that the power subsystem complies with them.
Verified: Phase B
https://drive.google.com/file/d/1FnHIJPQ3AJgxpFxvtpwufFIk5dkkpSz_/view?usp=sharing
V-POW-2065
V-POW-2065
Perform failure mode analysis to look at the different hazard types and how the design is able to combat that. // add the failure mode analysis to this page as well
Verified: Phase B
Iris Project - Power Analysis (google.com)
V-POW-2066 (not verified )
V-POW-2066 (not verified )
Inspect documentation package to ensure that battery test plan and report is included in the Nanoracks review
Verified: Phase D
it's included: https://drive.google.com/file/d/1WF5pQ72YlSVYNqv2swNVWb5zPVWUdX61/view
V-POW-2072
V-POW-2072
Review the operations plan to confirm that after release of the CubeSat from the deployer, the power subsystem undergoes checkout activities to substantiate proper functioning including providing sufficient power to all subsystems.
Verified: Phase D
https://sites.google.com/site/manitobasat1/operations
https://sites.google.com/site/manitobasat1/operations#h.p_uM4Ga6cWJ2xe
V-POW-2073
V-POW-2073
Review the PCU schematics to ensure that the PCU has a sensor to read the temperature output from the PCU processor thermistor.
Verified: Phase C
page 9: https://drive.google.com/file/d/1YB1xIoX-vosYctnxvlWGo9BhfDRMvrWu/view?usp=sharing
V-POW-2075
V-POW-2075
Review CAN bus design to confirm that the PCU uses extended CAN Bus messages only for inter-module communications
Verified: Phase C
MBsat_EPS_controller_design.pdf - Google Drive // update design page
V-POW-2076 (delete this with R-POW-2050)
V-POW-2076 (delete this with R-POW-2050)
Review controller schematics to confirm that there are two power connections between the sun sensors and the ADCS controller
Verified: Phase C
verified by review: https://sites.google.com/site/manitobasat1/subsystems/aodcs#h.owhnjq6k0yv4
V-POW-2077
V-POW-2077
Review the thermistor location sheet on the thermal ICD to ensure that there are 4 thermistors on the solar panels to read their temperatures
Verified: Phase C
Thermistor Locations - Google Sheets
V-POW-2079
V-POW-2079
Review solar panel schematics on the power design page to confirm that there are 4 thermistors to measure the panel temperature
Verified: Phase C
schematics: solar panels - Google Drive
V-POW-3001
V-POW-3001
Look at the playbook work packages for all phases to ensure that the design, building, testing is led by students
Verified: Phase C
Playbook
V-POW-3002
V-POW-3002
Look at different electronic parts' datasheets and confirm that they survive past 3 months (reword to make it make sense)
Verified: Phase C
Iris Project - Component's Datasheet (google.com)
V-POW-3003
V-POW-3003
Review parts list to confirm that there are solar panels/ 21 solar cells
Verified: Phase C
https://docs.google.com/spreadsheets/d/19ePosxMieDmOCtYL3sXxmIGgYtRV4zDfLJSXK9ivTyU/edit?usp=sharing
V-POW-3012
V-POW-3012
Perform static power budget analysis to confirm that the solar arrays generate at least 11.12 W when they are is within 21 degrees of sun vector
Verified: Phase C
https://sites.google.com/site/manitobasat1/subsystems/power/power-analysis#h.p_8tM72Lb6zFDl
V-POW-3013
V-POW-3013
Review the power interface diagram to confirm that there is a SPI connection with ADCS
Verified: Phase C
https://sites.google.com/site/manitobasat1/subsystems/power/power-icd#h.p_ru1XD74gdm8P
V-POW-3014
V-POW-3014
Review schematics and data connection diagrams to confirm that ADCS and power can communicate using SPI
Verified: Phase C
page 4 and page 7 : https://sites.google.com/site/manitobasat1/subsystems/power/power-design-schematics#h.erolecgz5cw5
V-POW-3015
V-POW-3015
Review operations plan to verify that power and ADCS communicate during detumbling and PCU controls ADCS during detumbling
Verified: Phase C
Iris Project - Operations (google.com)
V-POW-3018 (check siblings and delete if not needed )
V-POW-3018 (check siblings and delete if not needed )
Review timer design and schematics to confirm that it follows the timer design
V-POW-3020
V-POW-3020
Review battery test plan report to verify that test plan include all tests required by Nanoracks and NASA
Verified: Phase C
V-POW-3022
V-POW-3022
Look at power design page and check that there is a conformally coating material for all parts
Verified: Phase C
masked areas on the board: https://sites.google.com/site/manitobasat1/subsystems/power/power-assembly-and-testing/eps-electronic-boards-testing#h.ow2n0fvob8y3
Conformal coating in BOM: https://sites.google.com/site/manitobasat1/subsystems/power/power-design-schematics#h.18mjehprf2xb
V-POW-3031
V-POW-3031
Inspect that all members performing tests and assembly are students
Verified: Phase D
According to Playbook
V-POW-3033
V-POW-3033
Test the EM of DET switches by replacing the solar arrays with a current source and checking that we can control the switches
Verified: Phase D
V-POW-3035
V-POW-3035
Use the EM of the battery to test that it stores energy from a current source. charges to 4500mAh and discharges to 0. +-
Verified: Phase D
V-POW-3038
V-POW-3038
Test EM load switches with EM board to verify that the load switches don't interfere with each other during operations
Verified: Phase D
V-POW-3050
V-POW-3050
Test with the EM of the PCU and dummy loads to verify that it uses not more than 0.55 W
Verified: Phase D
V-POW-3052
V-POW-3052
Test the EM power subsystem with dummy loads to replace other subsystem components to verify that unregulated voltage is provided to all subsystems, tech. demo and deployment mechanisms
Verified: Phase D
page 11 to 13 https://drive.google.com/file/d/1sA-YIQpgvJp6haRZ7QNv7Yr0eC_47zDT/view?usp=sharing
/// include unregulated voltage
V-POW-3203
V-POW-3203
Perform failure mode analysis to identify possible battery hazards and confirm that they all have been considered for design
Verified: Phase C
https://sites.google.com/site/manitobasat1/subsystems/power/power-analysis#h.hwzritlofcda
V-POW-3204
V-POW-3204
Test the EM of the power module with dummy loads for deployment mechanisms to confirm that the restraint mechanisms receive power from the PCU
Verified: Phase D
V-POW-3206
V-POW-3206
Test the EM power module to confirm that the PCU can read the battery thermistor temperature data to a resolution of +-0.5 deg C
Verified: Phase D
V-POW-3219
V-POW-3219
Review design to see that the thermistor gives the resolution of its reading to be 0.5 deg C
Verified: Phase C
https://sites.google.com/site/manitobasat1/subsystems/power/power-analysis#h.hwzritlofcda // mention this in design
V-POW-3233
V-POW-3233
Inspect the FM battery datasheet to confirm that it does not have a specific energy of greater than 80W/h.
Verified: Phase D
based on battery datasheet, our battery pack has a total capacity of 28.8 W.h https://sites.google.com/site/manitobasat1/subsystems/power/components-datasheet#h.jax2mkw85w61
V-POW-3242
V-POW-3242
Review CAD model and design page to confirm that non-deployable solar arrays placement is such as: 2 are on - x axis and one is on + x axis
Verified: Phase C (needs drawing update)
V-POW-3249
V-POW-3249
Test the EM power subsystem watchdog circuit in place to deal with single event upsets. During the test, look at the parts in the microcontroller that are affected the most by single event upsets and if the watchdog circuit is able to sufficiently deal with the single event upsets especially during power reboot, no board required, software can be tested by itself. Stop the core of the software, the watchdog should then reset the PCU timer (rewording )
Verified: Phase D
V-POW-3300
V-POW-3300
Look at the thermistor data and note the resolution of its reading. It should be at least 0.5 deg C
Verified: Phase D
https://sites.google.com/site/manitobasat1/subsystems/power/power-analysis#h.hwzritlofcda //add to design
V-POW-4019
V-POW-4019
Review the parts list to confirm that the battery terminals have insulating material to insulate them from the case
based on parts list and datasheet
Verified: Phase C
https://sites.google.com/site/manitobasat1/subsystems/power/power-design-schematics#h.bjl27qr5tzpg
page 3: https://drive.google.com/file/d/1dNuMN4ntSFUlRuPgcMTt08TQvmuqW680/view?usp=sharing
V-POW-4020
V-POW-4020
Review harnessing diagrams to ensure that the wires inside the battery case are insulated, restrained and protected against chafing and are not affected by movement due to vibration or shock.
Verified: Phase D
Power assembly plan.docx - Google Docs // add the specific stuff
V-POW-5041
V-POW-5041
Review the parts list to confirm that there is no coin cell for power
Verified: Phase C
ManitobaSat Part Number Registry - Archive 21112019 - Google Sheets
Parts List for the Power Subsystem - Google Sheets
V-POW-6039
V-POW-6039
Analyze with properties from datasheet to establish that the battery pack can be stored without recharging for 3 months
Verified: Phase C
page 4 : https://drive.google.com/file/d/1dNuMN4ntSFUlRuPgcMTt08TQvmuqW680/view?usp=sharing
V-POW-6060
V-POW-6060
Review from the part list that there is a coulomb counter to estimate the battery's SOC
Verified: Phase C
UMS-0286 in Parts List for the Power Subsystem - Google Sheets
V-POW-6090
V-POW-6090
Review the mass budget and the parts list, datasheets to confirm that no single part of the power subsystem weighs more than 250 g
Verified: Phase C
The heaviest single parts are the batteries each weighing about 41 grams https://sites.google.com/site/manitobasat1/subsystems/power/components-datasheet#h.jax2mkw85w61
V-POW-7000
V-POW-7000
Run a maximum current of 420 mA through ADCS load switch to verify that the switch can limit current at 420 mA
Verified: Phase D
V-POW-7001
V-POW-7001
Perform a test to verify that the ADCS load switch can provide current reading
Verified: Phase D
V-POW-7002
V-POW-7002
Run a maximum current of 300 mA through CDH load switch to verify that the switch can limit current at 300 mA
Verified: Phase D
limits at 305mA @ page 11: https://sites.google.com/site/manitobasat1/subsystems/power/power-assembly-and-testing/eps-electronic-boards-testing#h.skkdp5dpau6n
V-POW-7003
V-POW-7003
Perform a test to verify that the CDH load switch can provide current reading
Verified: Phase D
V-POW-7004
V-POW-7004
Run a maximum current of 2 A through COMS load switch to verify that the switch can limit current at 2 A
Verified: Phase D
limits at 2A @ page 11: https://sites.google.com/site/manitobasat1/subsystems/power/power-assembly-and-testing/eps-electronic-boards-testing#h.skkdp5dpau6n
V-POW-7005
V-POW-7005
Perform a test to verify that the COMS load switch can provide current reading
Verified: Phase D
V-POW-7006
V-POW-7006
Run a maximum current of 250 mA through PLD load switch to verify that the switch can limit current at 250 mA
Verified: Phase D
limits at 260mA @ page 11: https://sites.google.com/site/manitobasat1/subsystems/power/power-assembly-and-testing/eps-electronic-boards-testing#h.skkdp5dpau6n
V-POW-7007
V-POW-7007
Perform a test to verify that the PLD load switch can provide current reading
Verified: Phase D
V-POW-7008
V-POW-7008
Run a maximum current of 1.8 A through the solar array deployment load switch to verify that the solar array deployment load switch can limit current at 1.8 A
Verified: Phase D
limits at 2A @ page12: https://sites.google.com/site/manitobasat1/subsystems/power/power-assembly-and-testing/eps-electronic-boards-testing#h.skkdp5dpau6n
V-POW-7009
V-POW-7009
Perform a test to verify that the solar array deployment load switch can provide current reading
Verified: Phase D
V-POW-7010
V-POW-7010
Run a maximum current of 1.8 A through antenna deployment load switch to verify that the Antenna deployment load switch can limit current at 1.8 A
Verified: Phase D
limits at 2A @ page12: https://sites.google.com/site/manitobasat1/subsystems/power/power-assembly-and-testing/eps-electronic-boards-testing#h.skkdp5dpau6n
V-POW-7011 (delete)
V-POW-7011 (delete)
Perform a test to verify that the Antenna deployment load switch can provide current reading
Verified: Phase D
V-POW-7012
V-POW-7012
Perform a test to verify that the DATEC Heater load switch can provide current reading
Verified: Phase D
V-POW-7014
V-POW-7014
Perform a test to verify that the MINCO Heater load switch can provide current reading
Verified: Phase D
Partially Verified
Partially Verified
V-POW-0422
V-POW-0422
Activate the inhibit switch to test if it actually isolates (no interconnecting conductors) the batteries from the negative terminal to ground in the EM model.
Not Verified
Not Verified
These activities are still in progress and are scheduled for Phase D and after that.
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