TMC Technologies marks 10 years of NOS3 digital engineering

TMC Technologies is marking the 10th anniversary of NASA’s Operational Simulator for Space Systems, a tool that has expanded from West Virginia’s first spacecraft project into a widely used open-source digital twin platform. The milestone underscores how software-first simulation is changing spacecraft development across government, academia and industry.

Why it matters: - NOS3 has helped spacecraft teams design, test, verify and operate flight software in a realistic software-only environment before hardware is available. - The approach has reduced cost, risk and schedule pressure across spacecraft programs. - The platform has grown from a SmallSat tool into a broader digital engineering capability used by government, academic and commercial organizations.

What happened: - TMC Technologies is celebrating the 10th anniversary of NASA Operational Simulator for Space Systems, or NOS3. - The work traces back to NASA’s Katherine Johnson Independent Verification and Validation Facility and TMC Technologies building Simulation-to-Flight 1, West Virginia’s first spacecraft. - NASA IV&V, TMC Technologies and academic partners are reflecting on the platform’s decade of impact across government, industry and academia. - The milestone is being marked at the 40th Annual Small Satellite Conference in Salt Lake City, Utah. - TMC Technologies Chief Engineer Dr. Scott Zemerick is scheduled to demonstrate NOS3 on Wednesday, Aug. 26, at 3:25 p.m. MDT in Meeting Room 250 D/E. - His presentation is titled "Accelerate SmallSat Development with NASA Operational Simulator for Small Satellites (NOS3) and the TMC Technologies FlexSat®." - TMC Technologies is also showing NOS3, SSDT® and FlexSat® at Booth 2100 in the main exhibit hall of the Salt Palace Convention Center.

The details: - NOS3 now brings together flight software, spacecraft dynamics, ground systems, mission operations and hardware simulators in one open-source environment. - The environment supports development, verification, training and mission operations. - The platform has supported NASA projects and missions, including the Lunar Environment Monitoring Station, or LEMS. - Government, academic and commercial groups have used the system to build their own digital twins for spacecraft. - TMC Technologies’ Small Satellite Digital Twin, or SSDT®, is described as the commercial evolution of NOS3. - SSDT® adds mission-specific customizations, proprietary enhancements and advanced capabilities for government and commercial customers. - TMC Technologies also offers hands-on space systems training using NOS3 and SSDT®. - The training is aimed at engineers, operators and mission teams working in realistic spacecraft development and mission operations environments. - TMC Technologies also cites FlexSat® as part of its digital engineering portfolio.

Between the lines: - NASA IV&V Director Wes Deadrick said the STF-1 and NOS3 work showed what can happen when government, industry and academia approach a mission problem in a different way. - Deadrick said high-fidelity software-centric simulation environments are increasingly important for mission assurance because they help teams understand software and system behavior earlier and assess risk sooner. - TMC’s leadership is positioning NOS3 as a foundation for a broader commercial strategy, not just a legacy NASA project. - Denise Lindsey, TMC’s chief strategist and senior vice president, said the company has built on NOS3 with SSDT® and FlexSat® to create a continuum from software simulation to hardware-in-the-loop testing. - TMC says that integrated digital engineering will matter more as spacecraft become more complex and development timelines compress.

What's next: - TMC Technologies plans to keep advancing digital twin technology through its commercial space systems portfolio. - The company expects continued use of NOS3, SSDT® and FlexSat® in mission development, testing and training. - TMC’s public demonstration at SmallSat is intended to show how the tools can support future mission design and operations.

The bottom line: - NOS3 has evolved from a collaboration around West Virginia’s first spacecraft into a long-running digital engineering platform with reach across the space sector.