Sensor networks [1] contain a large number of sensor nodes that collect some kind of data, for example temperature or air pressure, from the environment. Even though both wireless ad hoc networks and sensors networks communicate wirelessly, they are quite different from each other. The number of nodes in sensor networks can be several orders of magnitude larger than in ad hoc networks. Sensor n...

On-demand air transport is an air-taxi service concept that should ideally use small, autonomous, Vertical Short Takeoff and Landing (VSTOL), “green”, battery-powered electric aircraft (eVSTOL). In addition, these be competitive with modern helicopters, which are exceptionally reliable machines capable of the same task. For certification economic purposes, mobile tilting parts avoided. The intr...

Lithium-ion batteries have been used as energy storage technologies for electric vehicles or power plants due to their high density, low self-discharge rate, and long lifespan. Since the temperature of are directly related with durability, distributing uniformly efficiently is critically important. In this study, a technology using forced convection air was implemented remove heat battery cells...

The rotating shaft is the key component of air compressor connecting bearing seat and turbine disk for hydrogen battery, its working reliability affects safety compressor.The energy battery disk, life compressor. performance analysis comparison typical structure an are carried out, which provides experimental data vibration lays a theoretical foundation relevant design enterprises.