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Welcome to the NASA Operational Simulator (NOS3)!

NASA Operational Simulator for Small Satellites (NOS3)

The NASA Independent Verification and Validation (IV&V) Independent Test Capability (ITC) team developed West Virginia's first satellite, which is a 3U CubeSat (Small Satellite) named Simulation-to-Flight 1 (STF-1). The primary goal of this Small Satellite was to develop and demonstrate the lifecycle value of a software-only small satellite simulator. This simulator is called the NASA Operational Simulator for Small Satellites or NOS3.

NOS3 is an open-source, software-only test bed for small satellites available via the NASA Open Source Agreement. It is a collection of Linux executables, libraries, and source code. Current simulations are based on commercial off-the-shelf (COTS) hardware that has been used on several CubeSats. It is intended to easily interface with flight software developed using the NASA Core Flight System (cFS).

NOS3 serves as a baseline architecture for satellite missions, offering a robust and flexible framework that can be tailored to a specific mission. Its component-based structure facilitates integration of software modules, enabling developers to simulate spacecraft behavior, test instrument interfaces, and perform software/hardware integration. As an open-source platform, NOS3 serves as a valuable reference mission, providing teams with a flexible foundation to adapt to their mission requirements.

Documentation

Please refer to the following link for NOS3 Documentation: NOS3 - ReadTheDocs