An aircraft comprising an aircraft engine that during flight is controlled by utilizing one or more thrust levers, the aircraft engine comprising: - a core gas turbine engine including a compressor , a combustor , a high pressure turbine and a high pressure shaft ; - a fan assembly including a fan and a low pressure shaft , wherein the fan assembly is coupled to the core gas turbine engine ; and - an electric taxi system coupled to the fan assembly , the electric taxi system comprising an energy storage device and a motor responsive to energy provided by the energy storage device , wherein the motor is coupled to the fan assembly and is configured to drive the fan assembly during a taxi operation, wherein the motor comprises a variable frequency starter generator that is powered by the energy storage device and that is configured to drive the fan assembly during the taxi operation and wherein the motor is configured to attenuate a thrust generated by the fan assembly during a landing operation to slow the fan, reduce thrust and to charge the energy storage device ; wherein the fan assembly during taxi operation is controlled utilizing the same one or more thrust levers that are utilized to control the engine during flight; and wherein the core gas turbine is configured to be shut off during taxi operation such that the fan is driven by the low pressure shaft during the taxi operation without contribution by the high pressure shaft . - a core gas turbine engine including a compressor , a combustor , a high pressure turbine and a high pressure shaft ; - a fan assembly including a fan and a low pressure shaft , wherein the fan assembly is coupled to the core gas turbine engine ; and - an electric taxi system coupled to the fan assembly , the electric taxi system comprising an energy storage device and a motor responsive to energy provided by the energy storage device , wherein the motor is coupled to the fan assembly and is configured to drive the fan assembly during a taxi operation, wherein the motor comprises a variable frequency starter generator that is powered by the energy storage device and that is configured to drive the fan assembly during the taxi operation and wherein the motor is configured to attenuate a thrust generated by the fan assembly during a landing operation to slow the fan, reduce thrust and to charge the energy storage device ; wherein the fan assembly during taxi operation is controlled utilizing the same one or more thrust levers that are utilized to control the engine during flight; and wherein the core gas turbine is configured to be shut off during taxi operation such that the fan is driven by the low pressure shaft during the taxi operation without contribution by the high pressure shaft . wherein the motor comprises a variable frequency starter generator that is powered by the energy storage device and that is configured to drive the fan assembly during the taxi operation and wherein the motor is configured to attenuate a thrust generated by the fan assembly during a landing operation to slow the fan, reduce thrust and to charge the energy storage device ; wherein the fan assembly during taxi operation is controlled utilizing the same one or more thrust levers that are utilized to control the engine during flight; and wherein the core gas turbine is configured to be shut off during taxi operation such that the fan is driven by the low pressure shaft during the taxi operation without contribution by the high pressure shaft . <EOS>