Patent ID: 8235327

Claim:
An unmanned aircraft system, comprising: a movable mechanism of an unmanned aircraft; a servomechanism assembly operably coupled to the movable mechanism, wherein the servomechanism assembly includes a servo motor and an output shaft operably coupled to the motor, and wherein the output shaft has a first non-round surface; and an interface assembly operably coupled to the output shaft and the movable mechanism, wherein the interface assembly includes an adapter portion carried by the output shaft, wherein the adapter portion includes (a) a first aperture having a second non-round surface mated with the first non-round surface of the output shaft, and (b) a generally smooth, non-splined, engagement surface; and an output arm releasably engaged with the adapter portion, wherein the output arm includes a second aperture sized to receive at least a portion of the engagement surface of the adapter portion, and wherein the second aperture includes a non-splined, generally smooth inner surface in contact with and rotatable through 360 degrees relative to the engagement surface of the adapter portion.