Gyroscopic absorber

Some spacecraft require three-axis stability where rotation about any axis must be rigorously suj>-pressed. If the spacecraft begins to rotate in an undesired manner, onboard gyroscopes are spun up to absorb the additional rotational momentum and, by reaction, leave the spacecraft as a whole stationary. Many other spacecraft maintain stability by rotation about a fixed axis. Control of the altitude control system is the responsibility of the command and data handling system. When total rotational momentum of the spacecraft gets too large, the excess is eliminated by firing the attitude thrusters in the propulsion system. 

Ropeways are commonly used for skiing and sightseeing venues and urban transportation. The swing of ropeway carriers is easily induced by wind loading, rendering them inoperable for wind speeds in excess of about 15 m/s. This problem has attracted much research attention in the past few decades. The research work has primarily focused on two methods to reduce swing that involve a dynamic vibration absorber and a gyroscope. 

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