In this paper research is described which aims at the long term goal of a Virtual Airport Tower without the need of a real tower building, however with improved functionality. Specifically we address the intermediate step of a Remote Airport Tower Center (RTC) for remote surveillance and control of small airports. Because previous work and task analyses indicated the importance of the visual in...

A new air traffic control tower research facility dedicated to countering potential air and runway traffic problems at commercial airports is advancing the stateof-the-art in aviation research at the National Aeronautics and Space Administration (NASA) Ames Research Center. FutureFlight Central (FFC), is a unique real-time simulator designed to safely study new technologies, airport design chan...

Secondary bending moment and geometric nonlinearity should be taken into account in pipe tower design. Taking the 110kV double-circuit narrow-base steel as an example, 110 kV is compared analyzed through structure design software general finite element ANSYS. The analysis results show that tube adopt a rigid-truss model, influence of secondary main material considered. effect accounts for about...

This paper focuses on the optimization of a Solar-Enhanced Natural-Draft Dry-Cooling Tower (SENDDCT), originally designed by the Queensland Geothermal Energy Centre of Excellence (QGECE), as the air-cooled condenser of a geothermal power plant. The conventional method of heat transfer augmentation through fin-assisted area extension is compared with a metal foam-wrapped tube bundle. Both lead t...

Negative aerodynamic damping causes tower vibrations on turbines with stall rotors. Under certain conditions, these vibrations may rise to a level that causes a shutdown. Active stall turbines have a pitch system, and the objective of the work was to develop pitch control algorithms which would minimise the probability of tower vibrations rising to the shutdown level. The results of a root caus...