Megawatt high-speed synchronous generators rated in the power range of megawatts have been discussed. These generators are nowadays necessary for new aerospace missions, such as directed energy weapon (DEW) and airborne radar (AR). Requirements, ferromagnetic materials for magnetic circuits, electromagnetic design and cooling techniques for highspeed multimegawatt generators have been discussed. New sizing procedure has been proposed. First prototypes (1 MW and 2.5 MW) have been outlined.
