Abstract: A method for handling a simultaneous failure of all channels of a multi-channel engine controller configured to control operation of a gas turbine engine is provided. The method includes obtaining, by a first processor associated with a first channel of the engine controller, data indicative of the simultaneous failure of all channels of the engine controller. The method further includes providing, by the first processor, one or more control signals associated with resetting at least a second processor associated with a second channel of the multi-channel engine controller based, at least in part, on the data. Furthermore, the method includes controlling, by the first processor, operation of the gas turbine engine while at least the second processor is resetting.

Abstract: A method for handling a simultaneous failure of all channels of a multi-channel engine controller configured to control operation of a gas turbine engine is provided. The method includes obtaining, by a first processor associated with a first channel of the engine controller, data indicative of the simultaneous failure of all channels of the engine controller. The method further includes providing, by the first processor, one or more control signals associated with resetting at least a second processor associated with a second channel of the multi-channel engine controller based, at least in part, on the data. Furthermore, the method includes controlling, by the first processor, operation of the gas turbine engine while at least the second processor is resetting.

Abstract: A method of measuring elevational misalignment of an automotive radar sensor in a factory or service setting utilizes two or more targets that can be discriminated by the radar system. The targets are positioned at different elevational angles with respect to the desired elevation axis, and the degree of elevational misalignment is determined according to the ratio or difference in return signal amplitude for the two targets. Discrimination of the targets may be ensured by differences in range, azimuth angle or Doppler. Since the amplitude difference is a measure of misalignment, the measurement may be used to verify proper alignment or to indicate the amount of adjustment required to achieve proper alignment.