The model satellite
consists of a gimbaled system
constructed entirely from aluminum containing three concentric rings.
outermost ring is bolted to the frame while the middle and innermost
connected to the outermost and middle ring respectively via ball
aluminum platform is mounted through the innermost ring on which the
orthogonal gyroscopes are mounted. The gyroscopes consist of three DC
with 6 cm diameter brass rings attached to them. The motors are powered
three power sources (available in the Outreach Lab). Loosely coiled
run from the motors to connections secured on the base of the gimbals.
these connections the wires could be connected to the power sources.
The acceleration of the motors causes a change in angular momentum due to the change in angular velocity of the spinning brass wheels. This change induces a torque and will rotate the model satellite. With the gimbaled system the model is free to rotate in any direction and can do so with the three orthogonal motors. When the three motors are spun at high angular velocities, the high angular momentum will resist the tilting of the model, stabilizing it and allowing it to hold its orientation.
Full detailed building
plans available here.