TIL about the "Rolleron" - a 'dumb'/passive/non-electrical stability system that was used for the early sidewinders. It acts by having the wind spin up rollers, creating a gyroscopic effect. The rollers were placed on hinges, so as the missile spun the rollers stopped the roll by acting as rudders.

https://en.wikipedia.org/wiki/Rolleron
#til #todayilearned
https://www.reddit.com/r/todayilearned/comments/1g8hk6t/til_about_the_rolleron_a_dumbpassivenonelectrical/