Ground Support Equipment - igpp.ucla.edu · Mark Spencer WA8SME @ ARRL Tony Monteiro AA2TX & Bob...
Transcript of Ground Support Equipment - igpp.ucla.edu · Mark Spencer WA8SME @ ARRL Tony Monteiro AA2TX & Bob...
U.S. AIR FORCE
ELECTRON LOSSES ANDFIELDS INVESTIGATION
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Ground Support EquipmentMission PDR
Michael Anderson
Los Angeles, CaliforniaFebruary 12, 2015
U.S. AIR FORCE
Major Campaigns to Support
Notable Requirements
GSE-Spacecraft Interface
GSE Practices
Specific I&T GSE
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GSE AGENDA
U.S. AIR FORCE
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SUPPORTING ELFIN… EVERY STEP OF THE WAY
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1. Full Development Model Tests
2. Mass Model Vibration
3. Instrument-Level Qualification TVAC
4. Internal Power Deployment Tests
5. EM Qualification TVAC
6. EM Qualification Vibe
7. Instrument-Level Acceptance TVAC
8. FM Acceptance Vibe
9. FM Acceptance TVAC
. . . And all intermediate assembly efforts!
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MAJOR CAMPAIGNSTO SUPPORT
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NOTABLE REQUIREMENTS
REQ ID Requirement Rationale Parent(s) Verification Method
GSE‐04
Electrical Ground Support Equipment shall be capable of supporting functional testing of the satellite, including subsystem level and full “day in the life” testing.
For verifying functional requirements
UNP‐NS8‐Userguide_IR (UNP 16)
I: by design
GSE‐06Electrical Ground Support Equipment shall be capable of command and control of the satellite without free radiation of RF energy.
For functionaility tests involving magnetic cleanliness
UNP‐NS8‐Userguide_IR (UNP 18)
I: by design
GSE‐07Electrical Ground Support Equipment shall be capable of command and control of the satellite through radios and RF.
For testing communications functionaility
UNP‐NS8‐Userguide_IR (UNP 19)
I: by design
Notable EGSE Requirements: Covered at Systems Requirements Review
Modifications in Future: Better definition of MGSE requirements, apply magnetic
requirements Add EGSE requirements for thermocouples
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32 pins required for EGSE-Spacecraft interface: 8 pins: FCPCBs (Remove Access Cable) 2 pins: SBPCB1 SI-5 2 pins: SBPCB2 SI-5 4 pins: FCPCB MM I2C 4 pins: PPCB MM I2C 2 pins: IDPU GPIO 8 pins: BATT direct connections 2 pins: Inhibit actuation
Micro-D connector of TBD size Comes in 37, 51, 100 pin configuration
1 UART line to FCPCB, 1 to Radio Radio bypass to satisfy GSE-06
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EGSE-SPACECRAFT INTERFACE
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Safe-to-mates part of all relevant test procedures
Breakpoints in major GSE cabling to support TVAC and other tests
Time allocated in schedule for bakeout of TVAC EGSE
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GSE PRACTICES
REQ ID Requirement Rationale Parent(s) Verification Method
GSE‐23
All Electrical Ground Support Equipment connectors that interface with flight hardware shall be designed, built, and controlled in a manner commensurate with flight hardware with the exception of cleanliness and, therefore, shall meet applicable requirements for configuration control, quality assurance, parts & materials, etc.
Keep EGSE at similar quality of flight hardware ‐to protect the flight hardware
UNP‐NS8‐Userguide_IR (UNP 35)
I: by design
ELECTRICAL GSE
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GSE PRACTICESMECHANICAL GSE MGSE support structures must be vacuum safe
To be machined out of aluminum, Delrin, or PEEK
Protective covers for all instruments, optical sensors
Modeling tools in SolidWorks before assembly procedures attempted Verify assembly order is viable
MGSE to be colored or anodized red whenever possible
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Simulated Sunlight Basic light sources for
functional testing Potential performance
testing in solar simulator at Aerospace Corporation
RF Dummy Load Radio testing with limited
radiated power
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SPECIFIC I&T GSE
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P-POD analog borrowed from Cal Poly Fit checks of engineering, flight models Fixture for vehicle vibration campaigns
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SPECIFIC I&T GSE
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SPECIFIC I&T GSE Vehicle assembly to be conducted on sled
Separate grounding cable rather than passively grounding through sled; desirable for functional checks of EPD
Roll cage attachment for movement, accessing different sides
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Stacer Cradle Assembly Stacer not designed to support itself
horizontally except in orbit
EPD Aperture Covers General covers for protection Separate covers to contain isotope sources for
calibration in TVAC
FGM Cover Stowed FGM to be covered with vacuum-safe
plate when not in use
Solar Panel Covers Secured above panels to protect cells without
being in direct contact with cell coverglass
Bonus Volume Cover Secured to roll cage to protect stowed antennas
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SPECIFIC I&T GSE
U.S. AIR FORCE
Thank you to all of our sponsors, stakeholders,and contributors
Shaun Murphy @ Northrop GrummanKatharine Gamble @ UT Austin
Jim White WD0E @ Colorado Satellite ServicesMark Spencer WA8SME @ ARRL
Tony Monteiro AA2TX & Bob Davis KF4KSS @ AMSAT-NA
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ACKNOWLEDGEMENTS
U.S. AIR FORCE
Questions?
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