> Between the engine and the 18 variable displacement pumps [...] was a 100-pound flywheel. It spun up to 12,000 rpm and could store .25 kWh of energy. > The fl

> Between the engine and the 18 variable displacement pumps [...] was a 100-pound flywheel. It spun up to 12,000 rpm and could store .25 kWh of energy. > The flywheel also allowed the vehicle to recuperate some energy from the pumps when the ASV came to a stop […] and ensured a smooth shutdown in case of a sudden loss of power.