This document summarizes Zhaohui Cen's research work in four areas: 1) Test, diagnosis and reliability of electronics and renewable energy systems, 2) Fault prognosis and recovery for aircrafts and UAVs, 3) Quadrotor UAV and thrust-vectoring UAV modeling and control, and 4) Applications of neural networks in modeling and fault identification. It provides relevant publications, deliverables, and figures for each research area.