Reliability Assessment of Actuator Architectures for Unmanned Aircraft★★The research leading to these results has received funding from the European Union Seventh Framework Programme (FP7/2007- 2013) under grant agreement no. FP7-AAT-2012-314544. This work was supported by the National Science Foundation under Grant No. NSF/CNS-1329390 entitled “CPS: Breakthrough: Collaborative Research: Managing Uncertainty in the Design of Safety-Critical Aviation Systems”.