Observations of the quasi-steady aerodynamic model of the Atalanta project for additional velocity conditions

This research work presents the observations of the updated quasi-steady aerodynamic model of the Atalanta project, a flapping wing Micro Air Vehicle (MAV) project, for additional velocity conditions. The main focus of this research work is to update the existing quasi-steady model of Q.Wang developed for hovering conditions since its...

Airborne Wind Energy Systems for Mars Habitats

Using renewable energy to power a Mars habitat is a technological challenge because resources such as solar and wind are significantly weaker than on Earth. This work investigates the feasibility of using airborne wind energy (AWE) systems in combination with solar photovoltaic (PV) modules to power a Mars habitat. The Luchsinger model and the...

PMU-based state estimation for real-time monitoring of active distribution systems

State estimation (SE) is a crucial tool for power system state monitoring since the control center requires a process to deal with a large number of imprecise measurements. Several SE methods have been applied and developed for the electric power system in the transmission level in the past several decades. Meanwhile, SE for the distribution...

Quasi-Steady Model Enhancements of Airborne Wind Energy Systems

The quasi-steady model (QSM) was developed to calculate the power output of a soft-wing airborne wind energy (AWE) system operated in pumping cycles. The comparison with experimental data shows that the original formulation of the model underestimates the power output. The model does not take inertial forces into account and highly simplifies...

Assisting and opposing mixed convection with conjugate heat transfer in a differentially heated cavity filled with coarse-grained porous media

We report numerical simulations of assisting and opposing mixed convection in a side-heated, side-cooled cavity packed with relatively large solid spheres. The mixed convection is generated by imposing a movement on the isothermal vertical walls, either in or opposite to the direction of natural convection flow. For a fluid Prandtl number of...

Effect of double-diffusive convection with cross gradients on heat and mass transfer in a cubical enclosure with adiabatic cylindrical obstacles

We investigate natural convection driven by a horizontal temperature gradient and a vertical concentration gradient in fluid-filled enclosures with obstructions inside it. Within the domain, nine adiabatic and impermeable cylinders are placed, occupying 30% of the domain volume. The Boussinesq approximation is used to account for density...

Model identification of a flapping wing micro aerial vehicle

Different flapping wing micro aerial vehicles (FWMAV) have been developed for academic (Harvard’s RoboBee), military (Israel Aerospace Industries’ Butterfly) and technology demonstration (Aerovironment’s NanoHummingBird) purposes. Among these, theDelFly II is recognized as one of themost successful configurations of FWMAV, with a broad flight...

Verifying the Blade Element Momentum Method in unsteady, radially varied, axisymmetric loading using a vortex ring model.

Although the Blade Element Momentum method has been derived for the steady conditions, it is used for unsteady conditions by using corrections of engineering dynamic inflow models. Its applicability in these cases is not yet fully verified. In this paper, the validity of the assumptions of quasi-steady state and annuli independence of the blade...