Comparison of numerical model simulations and SFO wake vortex windline measurements

Delisi, Donald P.; Robins, Robert E.; Switzer, George F.; Lai, David Y.; Wang, Frank Y.; NorthWest Research Associates, Inc., Bellvue, WA; John A. Volpe National Transportation Systems Center (U.S.)

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Comparison of numerical model simulations and SFO wake vortex windline measurements

2003-06-23
By Delisi, Donald P. ; Robins, Robert E. ; Switzer, George F. ; ...

[PDF-2.34 MB]

English

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Alternative Title:

21st AIAA Applied Aerodynamics Conference, Orlando, FL, June 23-26, 2003
Creators:

Delisi, Donald P. ; Robins, Robert E. ; Switzer, George F. ; Lai, David Y. ; Wang, Frank Y.

Delisi, Donald P. ; Robins, Robert E. ; Switzer, George F. ; Lai, David Y. ; Wang, Frank Y. Less -
Corporate Creators:

NorthWest Research Associates, Inc., Bellvue, WA ; John A. Volpe National Transportation Systems Center (U.S.)

NorthWest Research Associates, Inc., Bellvue, WA ; John A. Volpe National Transportation Systems Center (U.S.) Less -
Subject/TRT Terms:

[+]

Aircraft Mathematical Prediction Measurement Of Specific Phenomena Simulation Turbulence Vortices Wakes Wake Vortices Windline
Resource Type:

Proceedings
Geographical Coverage:

San Francisco (California)
Corporate Publisher:

American Institute of Aeronautics and Astronautics
Abstract:

To provide quantitative support for the Simultaneous Offset Instrument Approach (SOIA) procedure, an extensive data collection effort was undertaken at San Francisco International Airport by the Federal Aviation Administration (FAA, U.S. Dept. of Transportation). During the time period from March 2000 to October 2002, wake vortex data was measured for over 260,000 landing aircraft. The data set includes wake vortex measurements from Small, Large, and Heavy category aircraft. The measurements consist of cross-runway wind speed recorded every two seconds from three windlines, comprised of a series of propeller anemometers on three-foot poles near the threshold of runways 28L and 28R. The resulting data set is being used to demonstrate the feasibility of SOIA and to guide the improvement of the wake vortex model in the FAA airspace simulation tool ASAT (Airspace Simulation and Analysis for TERPS). We show that a slightly modified version of the AVOSS (Aircraft VOrtex Spacing System) Prediction Algorithm (APA) produces lateral position predictions that agree well with the windline

data. We also show that the data and the APA results agree with results produced by TASS (Terminal Area Simulation System), a numerical code developed by NASA. These comparisons between code and data provide an independent validation of the lateral transport estimates using windline sensors and give us increased confidence in both the data obtained from the windline sensors and our ability to predict vortex evolution using numerical simulations.
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PDF
Collection(s):

Volpe Center
Main Document Checksum:

[+]

urn:sha256:978311f94489f26ef270a32bc1445552527ea1ffb22ee5dde3a1e970a7e40d03
Download URL:

https://rosap.ntl.bts.gov/view/dot/9663/dot_9663_DS1.pdf
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Comparison of numerical model simulations and SFO wake vortex windline measurements

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