This paper deals with the control of a thrust vec-tored ying wing known as the ducted fan, developed at California Institute of Technology. The experiment was developed to serve as a testbed for nonlinear control design. In an earlier paper, the authors reported simulation results based on a sim-pliied (no aerodynamics involved) planar model of the ducted fan around hover position. In this pape...

This paper deals with the control of a thrust vectored flying wing known as the ducted fan, developed at California Institute of Technology. The experiment was developed to serve as a testbed for nonlinear control design. In an earlier paper, the authors reported simulation results based on a simplified (no aerodynamics involved) planar model of the ducted fan around hover position. In this pap...

The application of matched filtering to the problem of very low frequency (VLF) radio signals ducted between magnetically conjugate points on the Earth by ionospheric plasma structures has been examined theoretically and implemented in recent field experiments. With accurate knowledge of the source VLF emissions, the subionospheric component of the received waveform can be effectively removed a...

One possible way to harness wind more efficiently in low-wind urban areas is place turbines inside a duct. A known issue of such approach due the flow separation that can occur at diffuser walls. This be avoided using channelled structure consisting duct and flap, also as multi-slot system. The present work describes effects flap geometry on turbine performance, through computational fluid dyna...