**Subsidiary:** [[Advanced Solutions Inc]] >[!summary] SOLIS is a commercial plug-in to the [ANSYS, Inc Systems ToolKit (STKTM)](https://www.ansys.com/products/missions/ansys-stk) mission analysis software, providing integrated end-to-end spacecraft simulation. Running [[MAX Flight Software]] and [[MAX Flight Software#ODySSy|ODySSy]], SOLIS provides simulation capabilities of all major spacecraft subsystems. > >🔗 https://www.rocketlabusa.com/space-systems/space-software/ >[📄 MAX and SOLIS Documentation](https://max.rocketlabusa.com/docs#Welcome.md) ![[Pasted image 20250312190140.png]] ## 🛠️ Features ### Attitude Disturbance Modeling - Magnetic dipole, gravity gradient, solar and aerodynamic forces ### Attitude Determination Modeling / Guidance - Sun sensors, horizon sensors, rate sensors, IMUs, magnetometers, star trackers, simulated GPS - Perfect attitude determination, fixed-gain filter, Kalman filter - Orbit determination, ephemeris propagation ### Attitude Control Modeling - Reaction wheels, magnetic torquers, thrusters - Perfect control, PIID control - Mode Control - Idle, Inertial Hold, Rate Damp - Numerous Tracking and Clocking Modes: Inertial Point, Sun Track, Nadir Track, Velocity Track, Mag Field Track, Target Tracking, Inertial Vector Tracking, Orbit Normal Track, Surface Relative Velocity Track, Rotisserie, External Guidance, Nadir Scan, Lat/Lon Scan - Eigen-Axis Slew, Optimized "Rendez-Slew" ### Power/Thermal Modeling - Distance-dependent solar flux, central body infrared, albedo - Finite element thermal; absorptivity, emissivity, conductivity, shunt - Solar panel size, efficiency, articulation, temperature dependency - Battery capacity, charge/discharge regulation - Dynamic spacecraft loads; payload power, comm system power, reaction wheel power ### Payload/Communications/Data Modeling - Off, On, Standby - Define multiple payload modes; power consumption, data collection - Transmitters, receivers, transceivers; data rates, overhead, power consumption - Data recorder size, current state - Command/telemetry availability when ground stations are visible ### Flight Emulation - Mission sequence modeling, real-time commanding, telemetry ## ✅ Applications - **System/Mission Requirements** Requirements definition, feasibility studies, component selection - **Conceptual Design** Analyze various system concepts to determine which can meet mission requirements - **Preliminary Design** Variations of conceptual designs are analyzed and refined Define subsystem and component level specifications - **Critical Design** Final design verification of subsystem models and components - **Risk Reduction and IV&V** Independent validation and sensitivity/margin analysis ![[Pasted image 20250312190058.png]] <div class="responsive-video"> <iframe src="https://www.youtube.com/embed/DxgVA5zfLIc" title="Introduction to SOLIS | ASI by Rocket Lab" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe> </div>