A method of operating a flight control system for a rotary wing aircraft, comprising: using sensors to generate sensor data based on captured motions of the rotary wing aircraft; using motion actuators to induce a translational and/or a rotational movement of the rotary wing aircraft about at least one of a yaw axis, a roll axis, or a pitch axis; and using a passenger discomfort-aware control unit to receive the sensor data from the sensors and to generate, based on the sensor data, passenger discomfort-aware actuator control signals for controlling the motion actuators of the rotary wing aircraft, wherein the passenger discomfort-aware actuator control signals are at least suitable for kinetosis reduction or for whole-body vibration reduction in passengers of the rotary-wing aircraft when being applied to the motion actuators, characterised in that the method further comprises: configuring the passenger discomfort-aware control unit before using the passenger discomfort-aware control unit in the flight control system, wherein configuring the passenger discomfort-aware control unit comprises: using a motion simulator to perform motion simulations of representative trajectories of the rotary wing aircraft; determining a filter signal based on the motion simulations; adjusting a feedback controller based on an application of the filter signal in a passenger discomfort weighting filter; and with the adjusted feedback controller, determining a linear feedback function that minimizes a transfer from the sensor data to control signals that increase a difference of a passenger discomfort index from a reference value, wherein the reference value is indicative of an absence of passenger discomfort. using sensors to generate sensor data based on captured motions of the rotary wing aircraft; using motion actuators to induce a translational and/or a rotational movement of the rotary wing aircraft about at least one of a yaw axis, a roll axis, or a pitch axis; and using a passenger discomfort-aware control unit to receive the sensor data from the sensors and to generate, based on the sensor data, passenger discomfort-aware actuator control signals for controlling the motion actuators of the rotary wing aircraft, wherein the passenger discomfort-aware actuator control signals are at least suitable for kinetosis reduction or for whole-body vibration reduction in passengers of the rotary-wing aircraft when being applied to the motion actuators, characterised in that the method further comprises: configuring the passenger discomfort-aware control unit before using the passenger discomfort-aware control unit in the flight control system, wherein configuring the passenger discomfort-aware control unit comprises: using a motion simulator to perform motion simulations of representative trajectories of the rotary wing aircraft; determining a filter signal based on the motion simulations; adjusting a feedback controller based on an application of the filter signal in a passenger discomfort weighting filter; and with the adjusted feedback controller, determining a linear feedback function that minimizes a transfer from the sensor data to control signals that increase a difference of a passenger discomfort index from a reference value, wherein the reference value is indicative of an absence of passenger discomfort. using a motion simulator to perform motion simulations of representative trajectories of the rotary wing aircraft; determining a filter signal based on the motion simulations; adjusting a feedback controller based on an application of the filter signal in a passenger discomfort weighting filter; and with the adjusted feedback controller, determining a linear feedback function that minimizes a transfer from the sensor data to control signals that increase a difference of a passenger discomfort index from a reference value, wherein the reference value is indicative of an absence of passenger discomfort.