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Analysis of limit cycle oscillation data from the aeroelastic test of the sugar truss-braced wing model
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Funk, Christie Scott, Robert C. Bartels, Robert E. |
| Copyright Year | 2015 |
| Description | Research focus in recent years has been given to the design of aircraft that provide significant reductions in emissions, noise and fuel usage. Increases in fuel efficiency have also generally been attended by overall increased wing flexibility. The truss-braced wing (TBW) configuration has been forwarded as one that increases fuel efficiency. The Boeing company recently tested the Subsonic Ultra Green Aircraft Research (SUGAR) Truss-Braced Wing (TBW) wind-tunnel model in the NASA Langley Research Center Transonic Dynamics Tunnel (TDT). This test resulted in a wealth of accelerometer data. Other publications have presented details of the construction of that model, the test itself, and a few of the results of the test. This paper aims to provide a much more detailed look at what the accelerometer data says about the onset of aeroelastic instability, usually known as flutter onset. Every flight vehicle has a location in the flight envelope of flutter onset, and the TBW vehicle is not different. For the TBW model test, the flutter onset generally occurred at the conditions that the Boeing company analysis said it should. What was not known until the test is that, over a large area of the Mach number dynamic pressure map, the model displayed wing/engine nacelle aeroelastic limit cycle oscillation (LCO). This paper dissects that LCO data in order to provide additional insights into the aeroelastic behavior of the model. |
| File Size | 6820902 |
| Page Count | 25 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20160006008 |
| Archival Resource Key | ark:/13960/t74v1md4q |
| Language | English |
| Publisher Date | 2015-06-22 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Design, Testing And Performance Aerodynamics Finite Element Method Simulation Transonic Wind Tunnels Oscillations Nacelles Aircraft Design Wind Tunnel Models Flutter Analysis Angle of Attack Aeroelasticity Subsonic Aircraft Trusses Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
