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Ground vibration test of the xv-15 tiltrotor research aircraft and pretest predictions
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Studebaker, Karen Abrego, Anita |
| Copyright Year | 1994 |
| Description | The first comprehensive ground vibration survey was performed on the XV-15 Tiltrotor Research Aircraft to measure the vibration modes of the airframe and to provide data critical for determining whirl flutter stability margins. The aircraft was suspended by the wings with bungee cords and cables. A NASTRAN finite element model was used in the design of the suspension system to minimize its interference with the wing modes. The primary objective of the test was to measure the dynamic characteristics of the wings and pylons for aeroelastic stability analysis. In addition, over 130 accelerometers were placed on the airframe to characterize the fuselage, wing, and tail vibration. Pretest predictions were made with the NASTRAN model as well as correlations with the test data. The results showed that the suspension system provided the isolation necessary for modal measurements. |
| File Size | 558763 |
| Page Count | 8 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19940031465 |
| Archival Resource Key | ark:/13960/t5fc00d2b |
| Language | English |
| Publisher Date | 1994-02-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Stability And Control Accelerometers Stability Tests Vibration Rotor Aerodynamics Finite Element Method Ground Tests Wings Airframes Research Aircraft Xv-15 Aircraft Vibration Mode Flutter Mathematical Models Fuselages Nastran Vibration Tests Aeroelasticity Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
