Loading...
Please wait, while we are loading the content...
Similar Documents
A new forced oscillation capability for the transonic dynamics tunnel
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Piatak, David J. Cleckner, Craig S. |
| Copyright Year | 2002 |
| Description | A new forced oscillation system has been installed and tested at NASA Langley Research Center's Transonic Dynamics Tunnel (TDT). The system is known as the Oscillating Turntable (OTT) and has been designed for the purpose of oscillating, large semispan models in pitch at frequencies up to 40 Hz to acquire high-quality unsteady pressure and loads data. Precisely controlled motions of a wind-tunnel model on the OTT can yield unsteady aerodynamic phenomena associated with flutter, limit cycle oscillations, shock dynamics, and non-linear aerodynamic effects on many vehicle configurations. This paper will discuss general design and components of the OTT and will present test data from performance testing and from research tests on two rigid semispan wind-tunnel models. The research tests were designed to challenge the OTT over a wide range of operating conditions while acquiring unsteady pressure data on a small rectangular supercritical wing and a large supersonic transport wing. These results will be presented to illustrate the performance capabilities, consistency of oscillations, and usefulness of the OTT as a research tool. |
| File Size | 1128978 |
| Page Count | 18 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20030013003 |
| Archival Resource Key | ark:/13960/t09w5d74g |
| Language | English |
| Publisher Date | 2002-01-01 |
| Access Restriction | Open |
| Subject Keyword | Fluid Mechanics And Thermodynamics Performance Tests Computational Fluid Dynamics Transonic Wind Tunnels Pressure Distribution Performance Prediction Wind Tunnel Apparatus Wing Oscillations Unsteady Aerodynamics Semispan Models Wind Tunnel Tests Flutter Wind Tunnel Models Loads Forces Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
