Dynamic Flight Maneuvering Using Virtual Control Surfaces Generated by Trapped Vorticity

Glezer, Ari; Allen, Mark G.; Calise, Anthony J.; Leonard, Anthony; McMichael, James; Moser, Robert D.; Pearlstein, Arne J.

doi:10.21236/ada550638

Cited by 2 publications

(2 citation statements)

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“…Thus, simulations were performed with mass and moment of inertia approximately 2 and 58%, respectively, of those in the wind tunnel, as denoted by free-flight airfoil A in Table 1. These values are scaled from the inertial parameters of the Dragon Eye UAV [8] with an assumption that the UAV consists of only the two wings. The main controller for the actuators (without the hardware models) is extracted from the whole system because the additional models for the hardware system are not required for this free-flight test.…”

Section: Free-flight Airfoilsmentioning

confidence: 99%

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Simulation of Rapidly Maneuvering Airfoils with Synthetic Jet Actuators

et al. 2013

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Synthetic jet actuators are investigated for rapidly maneuvering airfoils that are regulated by a closed-loop control system. To support active flow-control simulations performed here, the closed-loop system and vehicle dynamics are coupled with computational fluid dynamics. High-frequency sinusoidal pitching simulations with and without synthetic jet actuation indicate that the current synthetic jet actuators provide bidirectional change in aerodynamic forces during rapid maneuvers whose time scales are of the same order as the flow time scales. Responses of a windtunnel airfoil are well represented in the current simulations, which allows us to predict the response of the system for dynamic conditions representative of free flight. The control system is able to execute rapid free-flight maneuvers. It is observed that the controller is responding to small fluctuations caused by vortex shedding from the trailing-edge actuators.

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Section: Free-flight Airfoilsmentioning

confidence: 99%

“…Such fast control ability of synthetic jet actuators enables the design of a rapidly maneuvering small-scale unmanned aerial vehicle (UAV) that operates in urban environments [8]. A rapid maneuvering means that the maneuver time scales associated with vehicle dynamics are of the same order as the flow time scales.…”

Section: Introductionmentioning

confidence: 99%