This report describes the research that has been conducted on the above referenced grant during the last nine-month period. The principal accomplishments during this time period are listed below: (1) Collected typical data such as wing mass and stiffness distributions geometric information and bending and torsional frequencies on HALE type vehicles such as Global Hawk, Darkstar U-2 etc. and used it to develop an ordering scheme, utilizing non- dimensional parameters, for this class of vehicles. (2) Developed simple structural dynamic/aeroelastic model for HALE type vehicles with isotropic wings undergoing moderate deflections in bending (normal to wing plane and chordwise), and torsion, and rigid body motion (plunge, pitch and fore and aft motion) using one mode for each elastic degree of freedom. (3) Developed procedure for coupling the unsteady aerodynamic loads obtained from CFD with the structural dynamic model. (4) Established fundamental scaling aeroelastic relations for testing this class of vehicles in a conventional wind tunnel.
Aeroelasticity and Aeroservoelasticity of Uninhabited Long Endurance Aircraft
2000
6 pages
Report
No indication
English
Aircraft , Aeroelasticity , Aeroservoelasticity , Surveillance drones , Structural properties , Stiffness , Elastic properties , Deflection , Computational fluid dynamics , Bending , Degrees of freedom , Aerodynamic loading , Wings , Remotely piloted vehicles , Wind tunnels , Torsion , Unsteady aerodynamics , Long endurance aircraft , Hale(High altitude long endurance) , Wing mass , Global hawk , Darkstar u-2 , Rigid body motion , Air vehicles , Isotropic wings
CFD-Based Aeroelasticity and Aeroservoelasticity
AIAA | 2003
|AEROELASTICITY AND AEROSERVOELASTICITY - Renaissance of Aeroelasticity and Its Future (SP)
Online Contents | 1999
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