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Design of supersonic transport flap systems for thrust recovery at subsonic speeds
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Mann, Michael J. Carlson, Harry W. Domack, Christopher S. |
| Copyright Year | 1999 |
| Description | A study of the subsonic aerodynamics of hinged flap systems for supersonic cruise commercial aircraft has been conducted using linear attached-flow theory that has been modified to include an estimate of attainable leading edge thrust and an approximate representation of vortex forces. Comparisons of theoretical predictions with experimental results show that the theory gives a reasonably good and generally conservative estimate of the performance of an efficient flap system and provides a good estimate of the leading and trailing-edge deflection angles necessary for optimum performance. A substantial reduction in the area of the inboard region of the leading edge flap has only a minor effect on the performance and the optimum deflection angles. Changes in the size of the outboard leading-edge flap show that performance is greatest when this flap has a chord equal to approximately 30 percent of the wing chord. A study was also made of the performance of various combinations of individual leading and trailing-edge flaps, and the results show that aerodynamic efficiencies as high as 85 percent of full suction are predicted. |
| File Size | 2180457 |
| Page Count | 52 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20000038403 |
| Archival Resource Key | ark:/13960/t09w5ct55 |
| Language | English |
| Publisher Date | 1999-12-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Design, Testing And Performance Pitching Moments Subsonic Speed Aerodynamic Configurations Leading Edge Thrust Leading Edge Flaps Deflection Vortices Supersonic Transports Trailing Edge Flaps Design Analysis Flapping Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
