Rotary Throttle Actuator

BAE Systems are at the forefront of UAV technology and development. They were in the process of adapting their High Endurance Rapid Technology Insertion (Herti) UAV drone for use in commercial, non-military applications. Drones offer significant advantages in many situations but, as with many things, the advantages often come with their own share of disadvantages. By definition, an autonomous drone lacks the capability for human intervention in a failure situation. Consequently, Civil Aviation Authority regulations demand that, in a non-military situation, controls must incorporate redundancy for increased safety in case of failure. On board software also needs to be DO178 compliant.

Link here