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Evaluation of four advanced nozzle concepts for short takeoff and landing performance
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Kemmerly, Guy T. Paulson Jr., John W. Quinto, P. Frank |
| Copyright Year | 1993 |
| Description | Four advanced nozzle concepts were tested on a canard-wing fighter in the Langley 14- by 22-Foot Subsonic Tunnel. The four vectoring-nozzle concepts were as follows: (1) an axisymmetric nozzle (AXI); (2) an asymmetric, load balanced exhaust nozzle (ALBEN); (3) a low aspect ratio, single expansion ramp nozzle (LASERN); and (4) a high aspect ratio, single expansion ramp nozzle (HASERN). The investigation was conducted to determine the most suitable nozzle concept for short takeoff and landing (STOL) performance. The criterion for the best STOL performance was a takeoff ground roll of less than 1000 ft. At approach, the criteria were high lift and sufficient drag to maintain a glide slope of -3 to -6 deg with enough pitching-moment control from the canards. The test was performed at a dynamic pressure of 45 lb/sq ft and an angle-of-attack range of 0 to 20 deg. The nozzle pressure ratio was varied from 1.0 to 4.3 at both dry power and after burning nozzle configurations with nozzle vectoring to 60 deg. In addition, the model was tested in and out of ground effects. The ALBEN concept was the best of the four nozzle concepts tested for STOL performance. |
| File Size | 28969785 |
| Page Count | 98 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19930019976 |
| Archival Resource Key | ark:/13960/t51g5mj6q |
| Language | English |
| Publisher Date | 1993-06-01 |
| Access Restriction | Open |
| Subject Keyword | Aerodynamics Pitching Moments Low Aspect Ratio High Aspect Ratio Aircraft Landing Canard Configurations Aircraft Performance Glide Paths Subsonic Wind Tunnels Exhaust Nozzles Pressure Ratio Short Takeoff Aircraft Roll Angle of Attack Aerodynamic Loads Dynamic Pressure Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
