Shape memory alloy-actuated propeller blades and shape memory alloy-actuatedpropeller assemblies are disclosed. An example propeller blade includes apropeller body, aplate coupled to the propeller body, a torque transfer member, and a shapememory alloy(SMA) actuator. The torque transfer member has a distal end attached to theplate such thatthe torque transfer member applies to the plate at least a portion of a torqueapplied to thetorque transfer member at a proximal end of the torque transfer member. TheSMA actuatorhas a distal end and a proximal end. The distal end of the SMA actuator isattached to thetorque transfer member. The proximal end of the SMA actuator is coupled to thepropellerbody such that the distal end is mated to the propeller body. The SMA actuatoris configuredto apply the torque to the proximal end of the torque transfer member inresponse to anapplication of heat to the SMA actuator.
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