Nutation (engineering)

Nutating mixers are used in gentle three-dimensional (gyrating) agitation of chemical or biological scientific procedures by repetitively moving the vessels holding the liquids.

In the case of flowmeters, the product of the rotational speed and the displacement per revolution is then taken to find the flow rate.

A nutating disc engine was patented in 1993 and a prototype was reported in 2006.

The engine consisted of an internal disk wobbling on a Z-shaped shaft.

[2] Nutation has also been used in drive systems for gearboxes, with proposed uses including helicopter rotors, seat recliners and a European Space Agency probe[which?]