The fundamental objective of this research is study behavior of aircraft wake vortices within atmospheric boundary layer (ABL) in support of developing the system, Aircraft VOrtex Spacing System (AVOSS), under NASA's Terminal Area Productivity (TAR) program that will control aircraft spacing within the narrow approach corridors of airports. The purpose of the AVOSS system is to increase airport capacity by providing a safe reduction in separation of aircraft compared to the now-existing flight rules. In our first funding period (7 January 19994 - 6 April 1997), we have accomplished extensive model development and validation of ABL simulations. Using the validated model, in our second funding period (7 April 1997 - 6 April 2000) we have investigated the effects of ambient atmospheric turbulence on vortex decay and descent, Crow instability, and wake vortex interaction with the ground. Recognizing the crucial influence of ABL turbulence on wake vortex behavior, we have also developed a software generating vertical profiles of turbulent kinetic energy (TKE) or energy dissipation rate (EDR), which are, in turn, used as input data in the AVOSS prediction algorithms.
Numerical Modeling Studies of Wake Vortex Transport and Evolution Within the Planetary Boundary Layer
2000
280 pages
Report
No indication
English
Toward Three-Dimensional Modeling of a Wake Vortex Pair in the Turbulent Planetary Boundary Layer
British Library Conference Proceedings | 1997
|Planetary Boundary Layer Measurements for the Understanding of Aircraft Wake Vortex Behavior
British Library Conference Proceedings | 1997
|A Probabilistic Prediction Scheme for Wake Vortex Evolution in a Convective Boundary Layer
Online Contents | 2002
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