This research investigates the improvement on hardware and communication for traditional UAV formation flight. The major tasks include the redesign of a multi-microcontroller system and a Sequential Cyclic Broadcast Communication (SCBC) mechanism. The multi-microcontroller system allows the implementation of a distributed computation architecture for improving the computational capability and flexibility for varies applications. Based on the SCBC structure, an identification algorithm using prime factorization techniques is developed to ensure the transmission security of the transmitted flight information. The proposed algorithm is successfully verified using a random numerical simulation.