NASA Logo

NTRS - NASA Technical Reports Server

Back to Results
A Candidate Wake Vortex Strength Definition for Application to the NASA Aircraft Vortex Spacing System (AVOSS)A significant effort is underway at NASA Langley to develop a system to provide dynamical aircraft wake vortex spacing criteria to Air Traffic Control (ATC). The system under development, the Aircraft Vortex Spacing System (AVOSS), combines the inputs of multiple subsystems to provide separation matrices with sufficient stability for use by ATC and sufficient monitoring to ensure safety. The subsystems include a meteorological subsystem, a wake behavior prediction subsystem, a wake sensor subsystem, and system integration and ATC interfaces. The proposed AVOSS is capable of using two factors, singly or in combination, for reducing in-trail spacing. These factors are wake vortex motion out of a predefined approach corridor and wake decay below a strength that is acceptable for encounter. Although basic research into the wake phenomena has historically used wake total circulation as a strength parameter, there is a requirement for a more specific strength definition that may be applied across multiple disciplines and teams to produce a real-time, automated system. This paper presents some of the limitations of previous applications of circulation to aircraft wake observations and describes the results of a preliminary effort to bound a spacing system strength definition.
Document ID
19970031683
Acquisition Source
Langley Research Center
Document Type
Technical Memorandum (TM)
Authors
Hinton, David A.
(NASA Langley Research Center Hampton, VA United States)
Tatnall, Chris R.
(George Washington Univ. Hampton, VA United States)
Date Acquired
September 6, 2013
Publication Date
September 1, 1997
Subject Category
Air Transportation And Safety
Report/Patent Number
NASA-TM-110343
NAS 1.15:110343
Report Number: NASA-TM-110343
Report Number: NAS 1.15:110343
Accession Number
97N28796
Funding Number(s)
PROJECT: RTOP 538-04-11-11
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
No Preview Available