Dual-Spin Spacecraft - Instability of Intermediate and Minimum Principal Axes for Free Rigid Bodies
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This lecture examines instability in torque-free rigid-body rotation and explains dual-spin spacecraft stabilization. It develops the equations of motion and determines the flywheel speed required to stabilize rotation about different principal axes.
Syllabus
Introduction | general rigid bodies, all principal axes different.
Intermediate axis instability (Tennis Racket Theorem).
Phone toss, book toss to demonstrate.
Long-term instability of the minimum inertia axis.
Historical space missions, learning lessons from failure.
Dual-spin spacecraft stabilization.
Taught by
Ross Dynamics Lab