Abstract: In this paper, recent Eigenstructure Assignment (EA) algorithms are implemented to provide dynamic control of a Lynx helicopter in the hover, using the ideal eigenstructure derived by Clarke et al. [2003b]. First, a state-feedback controller is presented to demonstrate that the target eigenstructure is consistent with the kinematics of a helicopter, and that the closed-loop system mee...

Female hairy-faced hover wasps forage for the young of a dominant breeder, but some forage more than others. New research shows that helpers decide how much to help by looking to the future.

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Chemical insecticides have hazardous effects on human health and the ecosystem hence there is a dire need of hour to use nonchemical eco-friendly tactics for management major insect pests. While traps other attract-and-kill devices in pest strategies reduce fruit fly (Tephritidae) populations has proved be efficient, therefore current study was designed evaluate different lure combinations moni...

An analytical treatment to quantify the losses captured in the induced power factor, k, is provided for flapping wings in normal hover, including the effects of non-uniform downwash, tip losses and finite flapping amplitude. The method is based on a novel combination of actuator disc and lifting line blade theories that also takes into account the effect of advance ratio. The model has been eva...

Title of dissertation: LOW REYNOLDS NUMBER FLOW VALIDATION USING COMPUTATIONAL FLUID DYNAMICS WITH APPLICATION TO MICRO AIR VEHICLES Eric J. Schroeder, Master of Science, 2005 Thesis directed by: Associate Professor James D. Baeder Department of Aerospace Engineering The flow physics involved in low Reynolds number flow is investigated computationally to examine the fundamental flow properties ...

A theoretical model of avian flight is developed which simulates wing motion through a class of methods known as predictive simulation. This approach uses numerical optimization to predict power-optimal kinematics of avian wings in hover, cruise, climb and descent. The wing dynamics capture both aerodynamic and inertial loads. The model is used to simulate the flight of the pigeon, Columba livi...