00:00What that tiny wheel on a missile's fin actually does, it's called a Rolleron.
00:03As the missile cuts through the air, this small wheel spins at nearly 10,000 rpm,
00:08powered purely by the airflow. That spinning creates gyroscopic stability,
00:11because a rotating object resists changes to its axis, just like a gyroscope.
00:16So, the Rolleron reduces roll and helps the missile fly straighter, hitting its target more accurately.
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