A brushless, three phase wound field synchronous machine (WFSM) provides an electromechanical power transfer system wherein it may serve as both a starter and a generator. Power for the excitation system of the WFSM is provided by a three phase flux switch...

An electrical system for generating a reliable power source for starting an engine, including a first interface to a direct current power source 206 and a second interface to an inverter 210. The inverter is coupled to a generator 204, An inductive damper ...

An electric power generating device (1) capable of suppressing an increase of a frontal surface area of an aircraft engine includes a transmission (22) connected with a rotary shaft (9) of the engine (E), an electric power generator (34) driven by an outpu...

An exemplary turbomachine starter assembly includes a motor-generator 50 that selectively operates in a motor mode or a generator mode. The motor-generator provides a rotational input to a turbomachine 10 when operating in the motor mode. The motor-generat...

A gas turbine engine (20) includes a first spool (40), a first gear system (72) connected to and driven by the first spool (40), a second spool (38), and a second gear system (70) connected to and driven by the second spool (38). A first starter-generator ...

The drive shaft has a metallic, hollow output shaft (1) with a load introducing element (2) formed at the ends. The output shaft has a metal rod (3) designed as semi-finished goods for the transmission of torsion loads. A fiber composite layer is made from...

A starter for an auxiliary power unit (12) includes a direct current motor (14) operably connectable to an auxiliary power unit. A clutch (22)is arranged in an electrically parallel relationship and configured to operably connect the motor to the auxiliary...

A starter generator has an electric rotating machine having a rotating shaft. The rotating machine is designed to carry on two reverse operations- motor and generator. A first clutch is connected between the rotating machine and the first rotating shaft fo...

An electric start system (20) includes a controller (40) that controls operation of a motor (22) used to start a device such as a gas turbine engine (24). In one example, the controller (40) determines when an acceleration rate of the motor (22) is outside...