Aircraft wake vortex measurements at Denver International Airport

Dougherty, Robert P.; Wang, Frank Y.; Booth, Earl R.; Watts, Michael E.; Fenichel, Neil; D'Errico, Robert E.

i

Aircraft wake vortex measurements at Denver International Airport

2004-05-10
By Dougherty, Robert P. ; Wang, Frank Y. ; Booth, Earl R.

File Language:

English

Details

Alternative Title:

10th AIAA/CEAS Aeroacoustics Conference, Manchester England, May 10-12, 2004
Creators:

Dougherty, Robert P. ; Wang, Frank Y. ; Booth, Earl R. ; Watts, Michael E. ; Fenichel, Neil ; D'Errico, Robert E.
Corporate Creators:

John A. Volpe National Transportation Systems Center (U.S.) ; Langley Research Center
Subject/TRT Terms:
Resource Type:

Proceedings
Geographical Coverage:

Denver (Colorado)
Corporate Publisher:

American Institute of Aeronautics and Astronautics
Abstract:

Airport capacity is constrained, in part, by spacing requirements associated with the wake vortex hazard. NASA's Wake Vortex Avoidance Project has a goal to establish the feasibility of reducing this spacing while maintaining safety. Passive acoustic phased array sensors, if shown to have operational potential, may aid in this effort by detecting and tracking the vortices. During August/September 2003, NASA and the USDOT sponsored a wake acoustics test at the Denver International Airport. The central instrument of the test was a large microphone phased array. This paper describes the test in general terms and gives an overview of the array hardware. It outlines one of the analysis techniques that is being applied to the data and gives sample results. The technique is able to clearly resolve the wake vortices of landing aircraft and measure their separation, height, and sinking rate. These observations permit an indirect estimate of the vortex circulation. The array also provides visualization of the vortex evolution, including the Crow instability.
Format:

PDF
Download URL:

https://rosap.ntl.bts.gov/view/dot/9668/dot_9668_DS1.pdf
File Type:

[PDF - 1.71 MB]
Collection(s):

Volpe Center
Main Document Checksum:

urn:sha256:a50a6af537c0361f26fef29f3c84cbdf137cd358208cb5fe71261d471ea5aa67

File Language:

English

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