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◦ Different class of ACS hardware and software Limited mass, power, processing
◦ Different dynamical regime Testbeds must be smaller/lighter
◦ Tight development schedules and small budgets Makes early hardware-in-the-loop testing necessary
SmallSats Need Unique Dyn. Testbed Capabilities
The SSDT augmentation to the FCT enables JPL dynamics testing for Small Satellites
Planar Air BearingSpherical Air Bearing
3 DOF Attitude
1 DOF Attitude2 DOF Translation
6 DOF Attitude
SSDT:3 Environments
Combined
6 DOF (1 actuated)
For comparison, the FCT Robots:
Computer Simulator
Planar Air BearingSpherical Air Bearing Computer Simulator
SSDT:3 Environments
2 Payload Types
Integrated ACS Units Individual Components
Planar Air BearingSpherical Air Bearing Computer Simulator
SSDT:3 Environments
2 Payload Types
1Shared Infrastructure
Integrated ACS Units Individual Components
SSDT:3 Environments 2 Payload Types 1Shared
InfrastructureAny SSDT payload type (or customer payload) can be placed (in a number of combinations) in any of our environments for study/checkouts/V&V/characterization, all while leveraging our common infrastructure
As-Built Testbed(Customer Brings Nothing)
Specific Actuator/Sensor + Testbed
Instrument +Testbed
Full Spacecraft + Testbed
Attitude Control Alg. HW-in-the-Loop Development
- Software functional testing in resource-constrained env..
- Software perf. evaluations
- Direct performance comparisons btwn different algorithms
Hardware Checkouts
- Phasing tests- Functional
testing of HW- Performance
testing comparisons of hw to testbed
- TRL demo for technology dev.
System-Level Performance Eval. - Demo of
complex activities (AR&D, fine pointing)
- System-Level V&V
Simulated Mission Scenarios
Using:
Different Uses of the SSDTDifferent Uses of the SSDT
SSDT Customer Interactions
• Reviews test docs
• Negotiates schedule
Generate:• Test Objectives• Test Plan • Test Procedure• Data Products List
• Staffs with FCT/SSDT support personnel
• Schedules dry run and test
Set up and Dry RunRun Test and Takedown
Follow Up Meeting
Projects
SSDT PoC
Project supports setup and dry run
SSDT PoC assists in setup, dry run, and interactions with project
Project supports test, handles project hw, assists in take down
SSDT PoC assists in test, handles testbed and FCT hw/sw, gathers data, take down
Project reviews data products, asks questions on data
SSDT PoC provides data products from FCT, reviews with project
Proximity Body Operations Precision Pointing Planetary Surface Study Astronomy Autonomous Rendezvous and Docking Formation Flying Orbiting Sample Capture Smallsat landers/impactors on Phobos and
Deimos Interferometry Mission Telecom Relay
Supporting Mars Applications
We Can Do Great Things with this Capability!
Flight Project Support
Technology Development
Proposal Writing
Capability/Infrastructure
• Develop mission-specific flight software/ algorithms with hw in the loop
• In-house ATLO phasing, functional, and performance ACS testing for SmallSat missions
• Strengthen in-house small satellite testing/ development capabilities on FCT
• Scaled demos/tests to examine complex ACS elements of larger missions
• Increase capabilities to leverage in proposals
• Perform testing and feasibility assessments that flow into small satellite proposals
• Improve estimates for the cost /duration of precision small satellite ACS
• Develop SmallSat precision pointing, AR&D, FF, and relative navigation capabilities
• Mature novel small satellite sensors, actuators, and algorithms