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Flutter of asymmetrically swept wings
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Crittenden, J. B. Weisshaar, T. A. |
| Copyright Year | 1976 |
| Description | Two formulations of the oblique wing flutter problem are presented; one formulation allows only simple wing bending deformations and rigid body roll as degrees of freedom, while the second formulation includes a more complex bending-torsional deformation together with the roll freedom. Flutter is found to occur in two basic modes. The first mode is associated with wing bending-aircraft roll coupling and occurs at low values of reduced frequency. The second instability mode closely resembles a classical bending-torsion wing flutter event. This latter mode occurs at much higher reduced frequencies than the first. The occurrence of the bending-roll coupling mode is shown to lead to lower flutter speeds while the bending-torsion mode is associated with higher flutter speeds. The ratio of the wing mass moment of inertia in roll to the fuselage roll moment of inertia is found to be a major factor in the determination of which of the two instabilities is critical. |
| File Size | 842205 |
| Page Count | 33 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19760014076 |
| Archival Resource Key | ark:/13960/t8cg4h15t |
| Language | English |
| Publisher Date | 1976-03-12 |
| Access Restriction | Open |
| Subject Keyword | Aerodynamics Finite Element Method Moments of Inertia Swept Wings Flutter Galerkin Method Aerodynamic Stability Equations of Motion Aeroelasticity Wing Loading Rolling Moments Aircraft Structures Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
