RAM Air and Wind Energy harvesting survey for Electrical Vehicles and transportation
This paper presents a survey on how the implementation of RAM Air/Wind Energy has the potential to become a feasible energy source by extending the range traveled for electric cars, Unmanned Aerial Vehicles (UAVs), trucks, and rail transports. Through the concepts of the Venturi Effect, the Bernoulli Principle, and the application of RAT in the aviation system, the main goal will be achieved. In due course, RAM Air/Wind Energy will bring about the future of electrical transportation.
Resource Allocation for OFDM Relaying Wireless Power Transfer Based Energy-Constrained UAV Communication Network
This paper proposes an orthogonal frequency division multiplexing (OFDM) relaying wireless power transfer based protocol for energy-constrained unmanned aerial vehicle (UAV) communication network. At the first step of the proposed protocol, the energy-constrained UAV separates the received signals into two disjoint subcarrier groups to perform energy harvesting (EH) and information decoding (ID). At the second step, UAV forwards the received information signals with the energy harvested a priori. Based on the proposed protocol, this paper aims to find the joint optimization of subcarrier grouping and power allocation for maximizing the transmission rate under the EH constraint. We further solve such a joint resource allocation problem via dual decomposition after transforming it into an equivalent convex optimization problem. Simulation results indicate that the performance of our proposed protocol can be significantly improved for the OFDM relaying based UAV communication network.
A numerical study on liquid ring motion and fragmentation for the initial process of liquid explosive dispersal
For the explosive dispersal on liquid fuel of FAE technique, the expansion of gaseous detonation products, axisymmetric radial extension and fragmentation of a liquid ring were analyzed, then corresponding models were established. By those models coupled, the numerical simulation on motion and fragmentation of the liquid ring exerted by strong action was carried out. The results computed show that the models established are feasible, and present study can offer initial conditions for the numerical simulation on the process of liquid secondary breakup and gas-liquid mixing.