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A probabilistic wake vortex lateral transport model using data from sfo and den
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Mellman, George R. Delisi, Donald P. |
| Copyright Year | 2008 |
| Description | In a previous report, we considered the behavior of the lateral position of vortices as a function of time after vortex formation for Out of Ground Effects (OGE) data for aircraft landing at San Francisco International Airport (SFO). We quantified the spread in lateral position as a function of time and examined how predictable lateral position is under a variety of assumptions. The combination of spread and predictability allowed us to derive probability distribution functions (PDFs) for lateral position given observed crosswind (CW) velocities. In this study, we examine the portability of these PDFs with respect to other landing sites. To this end, we consider OGE data obtained by the Federal Aviation Administration for landings at Denver International Airport (DEN) between 04/05/2006 and 06/03/2006. We consider vortices from both B733 (Boeing 737 models 200-500) and B757 (Boeing 757) aircraft. The data set contains 635 B733 landings and 506 B757 landings. The glide slope altitude for these measurements was 280 m, determined by the average initial vortex observation adjusted for a 3-second delay in the initial observation. The comparable SFO altitude was 158 m. We note that the principal mechanism for lateral transport in the OGE regime is advection by the ambient wind. This implies that a simple crosswind correction may be effective in explaining much of the variation in the lateral transport data. In this study, we again consider the use of ASOS data and average Lidar crosswind data over the vortex altitude range to predict vortex location as a function of time. |
| File Size | 347105 |
| Page Count | 37 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20100003338 |
| Archival Resource Key | ark:/13960/t7xm39310 |
| Language | English |
| Publisher Date | 2008-10-03 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Design, Testing And Performance Landing Sites Probability Theory Boeing 757 Aircraft Airports Probability Distribution Functions Aircraft Models Wind Direction Time Dependence Vortices Aircraft Wakes Boeing 737 Aircraft Transport Theory Optical Radar 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 |
