Development and Testing of Unconventional Micro Air Vehicle Configurations

Kellogg, J.C.; Bovais, Christopher; Foch, Richard J.; Cylinder, D.; Ramamurti, Ravi; Sandberg, William C.; Gardner, John; Srull, Donald W; Piper, George; Vaiana, Peter

doi:10.2514/6.2003-6656

Cited by 6 publications

(5 citation statements)

References 4 publications

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“…Experimental and computational investigations have been carried out on several fronts to gain insight into insect flight performance and use those insights in vehicle design. Kellogg et al (Kellogg et al, 2001;Kellogg et al, 2003) and Jones and Platzer (Jones and Platzer, 2003) have experimentally investigated the use of tandem flapping foils for micro-air vehicle propulsion and were successful. Ramamurti et al (Ramamurti et al, 2005) computationally studied the unsteady thrust and lift generation of tandem multiple flapping wing vehicles as well as rotary-wing vehicles to support MicroAirVehicle (MAV) design efforts.…”

Section: Introductionmentioning

confidence: 99%

A computational investigation of the three-dimensional unsteady aerodynamics ofDrosophilahovering and maneuvering

Ramamurti

Sandberg

2007

Journal of Experimental Biology

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the yaw moment is investigated by computing the center of pressures on each wing and the individual moment arms. This investigation leads to the conclusion that it is the forward force and a component of the lift force that combine to produce the turning moment while the side force alone produces the restoring torque during the maneuver. The vorticity shed from the wing's leading edge and the tips show a loop like structure that during stroke reversals pinches off into ^-like structures that have not been previously observed in the wakes of flapping fliers.

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Section: Introductionmentioning

confidence: 99%

A computational investigation of the three-dimensional unsteady aerodynamics ofDrosophilahovering and maneuvering

Ramamurti

Sandberg

2007

Journal of Experimental Biology

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“…Neglecting the viscous force cV f acting on the FMAV's body by assuming that it is moving at low speeds, the translational subsystem (6-7) can be transformed into a chain of integrators (1). cV f will be considered as a disturbance term in simulations.…”

Section: Position Controlmentioning

confidence: 99%

“…Flapping wing Micro Aerial Vehicles (FMAVs) aim to combine the advantages of the rotary and fixed airfoils [1]. They have a great maneuverability, develop high lift, and theoretically consume low energy.…”

Section: Introductionmentioning

confidence: 99%

Bounded control of an underactuated biomimetic aerial vehicle—Validation with robustness tests

Rifaï

Marchand

Poulin‐Vittrant

2012

Robotics and Autonomous Systems

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Flapping wing Micro Aerial Vehicles (FMAVs) have recently emerged as a promising challenge lying on the progress of the avionics technologies. The present paper deals with the development of simple control laws for an embedded implementation on a biomimetic MAV, aiming to control its attitude and position. The control laws are bounded, taking into consideration the amplitude bounds of the control angles characterizing the flapping wings movement. In order to validate the control laws, a simplified model having a simple wing kinematic parametrization and considering only the main aerodynamic forces and torques is proposed. The stability of the controller is shown in simulations using a diptera insect model. The robustness of the proposed controller is emphasized through different robustness tests. They concern mainly external disturbances, model and aerodynamic parameters errors, and aim to validate the considered simplifications in the model.

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“…Two other biomorphic configurations, to be treated in some detail later, are the clapping reversing-camber airfoil which creates and makes use of pressure pulses to augment thrust, and the tandem pair of clapping reversing camber-airfoils which provide both thrust and lift. Detailed description of our initial configurations such as the reversing camber Delphinopter and the clapping reversing camber Pectenopter is given by Kellogg et al (2003) (5) .…”

Section: Biomorphic Flightmentioning

confidence: 99%

Computational fluid dynamics study of unconventional air vehicle configurations

et al. 2005

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that claps down atop the rear fixed surface on each stroke; and a vehicle with tandem pairs of biplane configured flapping wings, in which each pair moves in opposition so as to alternately clap together and separate. This latter vehicle, which does not employ fixed lifting surfaces, has the advantage of being dynamically balanced in flight so that its center of mass is not forced to oscillate vertically by the flapping action. In addition, development is underway on a stop-rotor hybrid vehicle. This employs a pair of single-blade, rotary/fixed wing panels, attached at their roots to separate coaxial shafts. For low-speed flight the wing panels are driven as contra-rotating rotor blades for lift. A pusher propeller provides primary thrust, and control surfaces in the propeller wash provide pitch, yaw, and roll control. In fixed wing flight the wing panels are stopped opposite each other to become a conventional wing. This configuration eliminates the airflow reversal over the wing that occurs upon conversion in other stop-rotor designs. Developmental models of this vehicle have flown successfully in both fixed and rotary wing modes. Computational fluid dynamics (CFD) studies of these vehicles are performed using an unstructured grid based finite element incompressible flow solver called, feflo, to optimise propulsion efficiency and flight control techniques. In this paper, description of the flow solver and adaptive remeshing, descriptions of the flying models, CFD simulation results of two novel unmanned air vehicles will be presented. ABSTRACTTwo unconventional micro air vehicles developed by the Naval Research Laboratory are described. One of the vehicles employs flapping wings which is inspired by the flight of birds or insects but does not copy it directly. The second vehicle is a stop-rotor hybrid vehicle employing a pair of single blade, rotary/fixed wing panels, attached at their roots to separate coaxial shafts. An unstructured grid based incompressible flow solver, called feflo, is used to simulate the flow past these novel configurations in order to determine the flight characteristics of these vehicles.

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Development and Testing of Unconventional Micro Air Vehicle Configurations

Cited by 6 publications

References 4 publications

A computational investigation of the three-dimensional unsteady aerodynamics ofDrosophilahovering and maneuvering

A computational investigation of the three-dimensional unsteady aerodynamics ofDrosophilahovering and maneuvering

Bounded control of an underactuated biomimetic aerial vehicle—Validation with robustness tests

Computational fluid dynamics study of unconventional air vehicle configurations

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