Effect of geometry, static stability, and mass distribution on the tumbling characteristics of generic flying-wing models

Fremaux, C. Michael; Vairo, D. M.; Whipple, R. D.

doi:10.2514/6.1993-3615

“…Weisshaar and Ashley 3 studied the static aeroelasticity of flying wings, including instabilities such as divergence and large twist and bending that may lead to loss of control effectiveness. Fremaux, Vairo and Whipple 4 have identified some of the parameters that cause a flying wing configuration to be capable of a sustaining tumbling motion through the use of dynamically scaled generic models. In their work, effects due to the change of mass distribution and wing swept angle were presented.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Response of Highly Flexible Flying Wings

Su

¹

,

Cesnik

²

2011

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This paper presents a method to model the coupled nonlinear flight dynamics and aeroelasticity of highly flexible flying wings, as well as analyze their nonlinear characteristics. A low-order, nonlinear, strain-based finite element framework is used, which is capable of assessing the fundamental impact of structural nonlinear effects in a computationally effective formulation target for preliminary vehicle design and control synthesis. The crosssectional stiffness and inertia properties of the wings are calculated along the wing span, and then incorporated into the 1-D nonlinear beam model. A proposed model for the effects in the torsional stiffness of skin wrinkling due to large bending curvature of the wing is also presented. Finite-state unsteady subsonic aerodynamic loads are incorporated to complete the aeroelastic representation of a flying wing. In studying flying wing dynamic response, a spatially-distributed discrete gust model is introduced and its impact on the time-domain solutions is investigated.

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“…Weisshaar and Ashley 3 studied the static aeroelasticity of flying wings, including instabilities such as divergence and large twist and bending that may lead to loss of control effectiveness. Fremaux, Vairo and Whipple 4 have identified some of the parameters that cause a flying wing configuration to be capable of a sustaining tumbling motion through the use of dynamically scaled generic models. In their work, effects due to the change of mass distribution and wing swept angle were presented.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Response of Highly Flexible Flying Wings

Su¹,

Cesnik²

2006

47th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference

22
0
11
0

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This paper presents a method to model the coupled nonlinear flight dynamics and aeroelasticity of highly flexible flying wings, as well as analyze their nonlinear characteristics. A low-order, nonlinear, strain-based finite element framework is used, which is capable of assessing the fundamental impact of structural nonlinear effects in a computationally effective formulation target for preliminary vehicle design and control synthesis. The crosssectional stiffness and inertia properties of the wings are calculated along the wing span, and then incorporated into the 1-D nonlinear beam model. A proposed model for the effects in the torsional stiffness of skin wrinkling due to large bending curvature of the wing is also presented. Finite-state unsteady subsonic aerodynamic loads are incorporated to complete the aeroelastic representation of a flying wing. In studying flying wing dynamic response, a spatially-distributed discrete gust model is introduced and its impact on the time-domain solutions is investigated.

show abstract

Effect of geometry and mass distribution on tumbling characteristics of flying wings
Fremaux¹,
Vairo²,
Whipple
³

1995
Journal of Aircraft
9
0
3
0
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Effect of geometry, static stability, and mass distribution on the tumbling characteristics of generic flying-wing models

Cited by 4 publications

References 1 publication

Dynamic Response of Highly Flexible Flying Wings

Dynamic Response of Highly Flexible Flying Wings

Dynamic Response of Highly Flexible Flying Wings

Effect of geometry and mass distribution on tumbling characteristics of flying wings

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