Inspired by superior flight performance of natural flight masters like birds and insects and based on the ventilating flaps that can be opened and closed by the changing air pressure around the wing, a new flapping wing type has been proposed. It is known that the net lift force generated by a solid wing in a flapping cycle is nearly zero. However, for the case of the ventilated wing, results f...

Analyses were carried out for adsorption of a reactive dye RB5 onto chitin and chitosan under static and dynamic conditions in an air-lift reactor. Assays were conducted for the effect of the type of sorbent and its content in the reactor on adsorption capacity of sorbents examined. The sorbent’s concentration under static conditions and in the reactor reached 5 mg d.m./dm3. In all experimental...

~bstkzcthe open-ended coaxial probe with lift-off is studied the effects of air gap on dielectric measurements. Also, in using a full-wave inalysis, and an uncertainty analysis is presented. The field equations for the following terminations are worked out: (1) the sample extends to x in the positive axial direction, (2) the sample is backed by a well-characterized material, and (3) the sample ...

The blades of a vertical axis wind turbine (VAWT) rotor see an inconsistent angle of attack through its rotation. Consequently, VAWT blades generally use symmetrical aerofoils with a lower lift-to-drag ratio than cambered aerofoils tailored to maximise horizontal axis wind turbine rotor performance. This paper considers the feasibility of circulation controlled (CC) VAWT blades, using a tangent...

Wind-tunnel experimentswere conducted on a 47-deg sweep, scaled 1303unmanned air vehiclemodel to assess the performance of an innovative windward-surface plasma actuator design for flight control at low angles of attack. Control was implemented by altering the flow past an aft separation ramp on the windward side using a single dielectric barrier discharge plasma actuator. The influence of ramp...

introduction membrane bioreactor (mbr) is an effective technology for wastewater treatment and water reuse which is becoming increasingly popular due to its numerous applications and advantages over conventional activated sludge process. this novel technology have advantages of small footprint, high concentration of mixed liquor suspended solids (mlss), high removal efficiency of chemical oxyge...

Bio-inspired vehicles are currently leading the way in the quest to produce a vehicle capable of flight and underwater navigation. However, a fully functional vehicle has not yet been realized. We present the first fully functional vehicle platform operating in air and underwater with seamless transition between both mediums. These unique capabilities combined with the hovering, high maneuverab...