Why SSDT?

• End-to-End Software Lab – Develop, debug, and regress-test flight and ground software months before hardware exists.

• High-Fidelity Models – Subsystem and environment models fool the code into thinking real sensors and actuators are present.

• Hybrid Hardware-in-the-Loop Ready – Swap in real components via TMC’s FlexSat® platform for seamless hardware validation.

• Cyber-Hardening Sandbox – Recreate on-orbit operations to practice penetration tests and intrusion-detection drills.

• AI & Autonomy Testbed – Evaluate Machine Learning payloads or autonomous agents alongside cFS, F-Prime, OnAIR, and other open frameworks.

Small Satellite Digital Twin (SSDT)

TMC Technologies’ Small Satellite Digital Twin (SSDT) turns the NASA Operational Simulator for Small Sats (NOS3) into a commercially supported, download-and-run virtual spacecraft. Built and maintained by the original NOS3 team, SSDT delivers real-time telemetry, dynamics, and hardware models so flight software runs unchanged in simulation or on the actual satellite.

Typical Uses:

• Design & Prototyping

  Rapid iterate avionics architectures and software interfaces.

• Verification & Validation (V&V)

  Run continuous-integration test suites against full mission scenarios.

• Operations Training

  Rehearse passes, anomalies, and contingency procedures with the Operations Team.

• Security / AI Research

  Safely explore cyber threats or autonomous behaviors in a realistic space environment.

• Ready to Accelerate Your Mission?

  TMC offers commercial-grade support, model customization, and deployment packages on-prem or cloud.