Flight Mechanics and Control Issues for Micro Air Vehicles

Stewart, Kelly; Abate, Gregg; Evers, Johnny

doi:10.2514/6.2006-6638

Cited by 14 publications

(6 citation statements)

References 3 publications

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“…This low-order code makes assumptions that the flow is incompressible and inviscid. The community has demonstrated that such assumptions are particularly appropriate for MAVs such as the ones considered in this paper with thin wings [5,7,13,15,20,[23][24][25][26]31]. The aerodynamics of the wings are estimated along with flow associated with slender bodies such as the fuselage.…”

Section: Modeling Methodologymentioning

confidence: 99%

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Design and analysis of biomimetic joints for morphing of micro air vehicles

Grant

Abdulrahim²,

Lind

2010

Bioinspir. Biomim.

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Flight capability for micro air vehicles is rapidly maturing throughout the aviation community; however, mission capability has not yet matured at the same pace. Maintaining trim during a descent or in the presence of crosswinds remains challenging for fixed-wing aircraft but yet is routinely performed by birds. This paper presents an overview of designs that incorporate morphing to enhance their flight characteristics. In particular, a series of joints and structures is adopted from seagulls to alter either the dihedral or sweep of the wings and thus alter the flight characteristics. The resulting vehicles are able to trim with significantly increased angles of attack and sideslip compared to traditional fixed-wing vehicles.

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Section: Modeling Methodologymentioning

confidence: 99%

“…Indeed, such vehicles are routinely being designed and flown at numerous universities and government laboratories while industry has already marketed several platforms for military and civilian purposes. Associated flight testing has amply demonstrated their basic capabilities and flight properties [6,12,14,[24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Design and analysis of biomimetic joints for morphing of micro air vehicles

Grant

Abdulrahim²,

Lind

2010

Bioinspir. Biomim.

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“…The flight dynamics are analyzed using Athena Vortex Lattice (AVL) to estimate the aerodynamics [22]. This low-order code makes assumptions that the flow is incompressible and inviscid; however, it is widely used in the community and predicts aerodynamics that have been shown in certain cases to have specific values within 20% of experimental measurements for this class of MAVs thin wings [23][24][25][26][27][28][29][30][31][32]. The aerodynamics of the wings are estimated along with the flow associated with slender bodies such as the fuselage.…”

Section: Platform Analysismentioning

confidence: 99%

Flight dynamics of a pterosaur-inspired aircraft utilizing a variable-placement vertical tail

Roberts¹,

Lind²,

Chatterjee³

2011

Bioinspir. Biomim.

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Mission performance for small aircraft is often dependent on the turn radius. Various biologically inspired concepts have demonstrated that performance can be improved by morphing the wings in a manner similar to birds and bats; however, the morphing of the vertical tail has received less attention since neither birds nor bats have an appreciable vertical tail. This paper investigates a design that incorporates the morphing of the vertical tail based on the cranial crest of a pterosaur. The aerodynamics demonstrate a reduction in the turn radius of 14% when placing the tail over the nose in comparison to a traditional aft-placed vertical tail. The flight dynamics associated with this configuration has unique characteristics such as a Dutch-roll mode with excessive roll motion and a skid divergence that replaces the roll convergence.

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“…Among these are: advanced modeling and simulation models for SUAS, aero-structural interaction, advanced guidance techniques, digital simulations, and vehicle integration [1][2][3][4][5][6][7][8]. In order to optimize collaboration within AFRL and also with outside research organizations, a common SUAS configuration, named Generic Micro-Munitions (GENMM) was designed, as shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Aerodynamic Investigation of Generic SUAS

Yang

Dudley

Davis

2012

42nd AIAA Fluid Dynamics Conference and Exhibit

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To optimize collaboration within AFRL and also with outside research organizations, a common SUAS configuration, named Generic Micro-Munitions (GENMM) was designed. This configuration serves as a reference for current and future research. The GENMM design incorporates a circular fuselage, a thin cambered wing of 24 inches wingspan, a fuselage length of 17 inches, and a conventional tail. In the previous study, simulation tools based on vortex panel method have been used to study the aerodynamics of the GENMM. The objective of this study is to apply Direct Numerical Simulation (DNS) to study the aerodynamic characteristics of the GENMM at different Reynolds numbers and to investigate techniques to reduce the adverse effects of flow separation and unsteady aerodynamics. For the aeroelastic predictions, the flow solver can be fully implicitly coupled with the structural dynamics solver. With this strong coupling, our in-house code is able to accurately and efficiently predict the unsteady aerodynamics, boundary layer separation, lift and drag, the stress and structural deformation of the flexible wing GENMM. The focus of this paper is, however, on the individual prediction of structural dynamics and fluid dynamics of the GENMM, and the coupled solution will be reported in the future.

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Flight Mechanics and Control Issues for Micro Air Vehicles

Cited by 14 publications

References 3 publications

Design and analysis of biomimetic joints for morphing of micro air vehicles

Design and analysis of biomimetic joints for morphing of micro air vehicles

Flight dynamics of a pterosaur-inspired aircraft utilizing a variable-placement vertical tail

Aerodynamic Investigation of Generic SUAS

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