What is another word for flywheel?
Pronunciation: [flˈa͡ɪwiːl] (IPA) 
Flywheel refers to a heavy disk or wheel that stores rotational energy and helps regulate the speed of an engine or machine. Some synonyms for the word flywheel include balance wheel, momentum wheel, inertial wheel, and energy accumulator. A balance wheel is typically found in a watch and helps regulate its time-telling mechanisms by maintaining the motion of the watch's gears. Momentum wheel is used in spacecraft to maintain or change the direction of the vehicle's movement. Inertial wheels are used in missile and spacecraft systems to help stabilize their orientation in space. The term energy accumulator is used to describe the flywheel that accumulates and stores energy for later use in hybrid and electric vehicles.
