A method, comprising: detecting a rotor strike of an object striking an aircraft rotor, the detection including comparing a commanded control signal against an adaptive control signal in order to detect the rotor strike by the aircraft rotor included in an aircraft, wherein the adaptive control signal is associated with controlling the aircraft rotor (306; 708) and the adaptive control signal varies based at least in part on the commanded control signal and state information associated with the aircraft rotor; and in response to detecting the rotor strike, adjusting one of the commanded control signal or the adaptive control signal to the aircraft rotor in order to reduce a striking force associated with the aircraft rotor; wherein comparing the commanded control signal against the adaptive control signal in order to detect the rotor strike includes: determining a reference signal based at least in part on the commanded control signal; determining a degree to which the adaptive control signal, which includes a sinusoidal signal, deviates from the reference signal; comparing the degree against a detection threshold; and in response to the degree exceeding the detection threshold, declaring that the rotor strike has been detected; characterised in that: adjusting the control signal to the aircraft rotor (306; 708) in order to reduce the striking force includes: in response to detecting the rotor strike, using an electrical connector to electrically disconnect the adaptive control signal from a rotor input signal; and in response to electrically disconnecting the adaptive control signal from the rotor input signal, using a pull resistor to set the rotor input signal to a known value associated with reducing the striking force associated with the aircraft rotor. wherein the adaptive control signal is associated with controlling the aircraft rotor (306; 708) and the adaptive control signal varies based at least in part on the commanded control signal and state information associated with the aircraft rotor; and in response to detecting the rotor strike, adjusting one of the commanded control signal or the adaptive control signal to the aircraft rotor in order to reduce a striking force associated with the aircraft rotor; wherein comparing the commanded control signal against the adaptive control signal in order to detect the rotor strike includes: determining a reference signal based at least in part on the commanded control signal; determining a degree to which the adaptive control signal, which includes a sinusoidal signal, deviates from the reference signal; comparing the degree against a detection threshold; and in response to the degree exceeding the detection threshold, declaring that the rotor strike has been detected; characterised in that: adjusting the control signal to the aircraft rotor (306; 708) in order to reduce the striking force includes: in response to detecting the rotor strike, using an electrical connector to electrically disconnect the adaptive control signal from a rotor input signal; and in response to electrically disconnecting the adaptive control signal from the rotor input signal, using a pull resistor to set the rotor input signal to a known value associated with reducing the striking force associated with the aircraft rotor. determining a reference signal based at least in part on the commanded control signal; determining a degree to which the adaptive control signal, which includes a sinusoidal signal, deviates from the reference signal; comparing the degree against a detection threshold; and in response to the degree exceeding the detection threshold, declaring that the rotor strike has been detected; characterised in that: adjusting the control signal to the aircraft rotor (306; 708) in order to reduce the striking force includes: in response to detecting the rotor strike, using an electrical connector to electrically disconnect the adaptive control signal from a rotor input signal; and in response to electrically disconnecting the adaptive control signal from the rotor input signal, using a pull resistor to set the rotor input signal to a known value associated with reducing the striking force associated with the aircraft rotor. in response to detecting the rotor strike, using an electrical connector to electrically disconnect the adaptive control signal from a rotor input signal; and in response to electrically disconnecting the adaptive control signal from the rotor input signal, using a pull resistor to set the rotor input signal to a known value associated with reducing the striking force associated with the aircraft rotor.