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Wind tunnel investigation of effects of variations in reynolds number and leading-edge treatment on the aerodynamic characteristics of an externally blown jet-flap configuration
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Megrail, J. L. Smith Jr., C. C. Parlett, L. P. |
| Copyright Year | 1973 |
| Description | An investigation has been conducted in a full-scale tunnel to determine the effects of variations in Reynolds number and leading-edge treatment on the aerodynamic characteristics of an externally blown jet-flap transport configuration. The model had a double-slotted trailing-edge flap and was powered by four high-bypass-ratio turbofan engines. Tests were performed by using each of three leading-edge devices (a 30-percent-chord flap and 15- and 25-percent-chord slats) at Reynolds numbers from 0.47 x one million to 1.36 x one million thrust coefficients up to 3.5. The use of a 25-percent-chord slat was found to be more effective than a 15-percent-chord slat or a 30-percent-chord flap in extending the stall angle of attack and in minimizing the loss of lift after the stall. The large slat was also effective in reducing the rolling moments that occurred when the engine-out wing stalled first. |
| File Size | 11296356 |
| Page Count | 157 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19730021289 |
| Archival Resource Key | ark:/13960/t6741jc1d |
| Language | English |
| Publisher Date | 1973-08-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Externally Blown Flaps Aerodynamic Configurations Transport Aircraft Reynolds Number Wind Tunnel Tests Aircraft Performance Short Takeoff Aircraft Aerodynamic Characteristics Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
