Abstract: The present application relates to systems and apparatus for providing ground support services to aircrafts. An exemplary system may include a ground support apparatus. The ground support apparatus may include at least one motor controller configured to receive input power and to supply output power. The ground support apparatus may also include a motor configured to receive the output power from the at least one motor controller. The motor may include a rotatable motor shaft. Further, the ground support apparatus may include a gearbox having an input shaft and an output shaft. The input shaft may be coupled to the rotatable motor shaft of the motor. Additionally, the ground support apparatus may include a compressor configured to generate compressed air. The compressor may include an impeller coupled to a compressor shaft and the compressor shaft may be coupled to the output shaft of the gearbox.

Abstract: A brake system may comprise a controller, a vehicle management system (VMS) in communication with the controller, a valve in communication with the controller, and a tangible, non-transitory memory configured to communicate with the controller, the tangible, non-transitory memory having instructions stored thereon that, in response to execution by the controller, cause the controller to perform operations comprising determining, by the controller, that a first enable signal is received by the controller from the VMS, determining, by the controller, that a second enable signal is received by the controller from the VMS, and disabling, by the controller, the controller from control of the valve in response to the first enable signal and the second enable signal.

Abstract: A brake system may comprise a controller, a vehicle management system (VMS) in communication with the controller, a valve in communication with the controller, and a tangible, non-transitory memory configured to communicate with the controller, the tangible, non-transitory memory having instructions stored thereon that, in response to execution by the controller, cause the controller to perform operations comprising determining, by the controller, that a first enable signal is received by the controller from the VMS, determining, by the controller, that a second enable signal is received by the controller from the VMS, and disabling, by the controller, the controller from control of the valve in response to the first enable signal and the second enable signal.