The following is a brief overview of the GNC architecture.

The tree below provides links to relevant design documents.

• Attitude determination and control system
  • Attitude determination sensors
    • Sun Sensor
      • The SS210 sun sensor has previously been procured.
    • IMU/Gyroscope/Magnetometer
      • The VN100 IMU has previously been procured.
      • Translational acceleration (acclerometer)
      • Angular velocity (gyroscope)
      • Magnetic field measurements (magnetometer)
  • Attitude control actuators
    • Reaction Wheel
      • 1 CubeWheel Small (CW0017) has previously been procured.
      • As of Summer 2025 the design has reverted to reaction wheels in 3 orthogonal axes instead of a pyramidal configuration of 4. While this removes redundancy, it also reduces costs, as reaction wheels are very expensive components, and simplifies the resolution of commanded torque to reaction wheel commands to a case with an invertible matrix.
    • Magnetorquer
      • 1 prototype magnetorquer has been wound.
      • This page is to be updated. The present approach as of Fall 2025 is to produce magnetorquers in-house, with design parameters similar to those shown in this design document.
  • STEVE
    • The STEVE is a secondary attitude determination scheme for use with the QEYnet mission. Its inclusion is TBD; more information is to be provided by October 2025. The STEVE is to provide a direction vector towards a known reference point on the ground based on the detection of a laser beam from a ground station pointed at the satellite. If STEVE is implemented, the addition of orbit determination with greater frequency than that possible with NORAD updates is likely required.