Zobrazeno 1 - 10
of 33
pro vyhledávání: '"George C. Greene"'
Publikováno v:
2018 Atmospheric and Space Environments Conference.
Publikováno v:
2018 Atmospheric and Space Environments Conference.
Publikováno v:
7th AIAA Atmospheric and Space Environments Conference.
The paper describes how to use simple models and, if needed, sensitivity analyses to determine the wake vortex categories for new aircraft. The methodology provides a tool for the regulators to assess the relative risk of introducing new aircraft int
Publikováno v:
Journal of Aircraft. 39:630-637
Wake turbulence considerations currently restrict the use of parallel runways less than 2500 feet apart. However, wake turbulence is not a factor if there are appropriate limits on allowed longitudinal pair spacings and/or allowed crosswinds. The tra
Publikováno v:
Journal of Aircraft. 38:911-917
We describe an algorithm that predicts the trajectories and circulation decay of aircraft trailing vortices. We e rst presentthemethodology used by the algorithm to simulatetrailing vortex behavior, including 1 )thedescent of the vortices through a r
Publikováno v:
Air Traffic Control Quarterly. 9:45-58
Because of wake turbulence considerations, current instrument approach procedures treat close-spaced (i.e., less than 2,500 feet apart) parallel run-ways as a single runway. This restriction is des...
Publikováno v:
Air Traffic Control Quarterly. 6:161-178
During the 1970’s and the early 1980’s, the FAA and NASA conducted extensive wake vortex research programs with the goal of safely increasing airport capacity. The FAA program focused on developing...
Autor:
Steven Lang, Wayne Bryant, George C. Greene, Donald P. Delisi, Paul Wilson, David Y. Lai, Catalin Lepadatu, Jeffrey A. Tittsworth
Publikováno v:
AIAA Atmospheric and Space Environments Conference.
This paper describes progress on an ICAO tasking to the FAA and Eurocontrol to lead an effort to harmonize wake turbulence separation standards for existing and new aircraft and to safely increase capacity. The first phase of the re-categorization ef
Autor:
Donald P. Delisi, George C. Greene
Publikováno v:
47th AIAA Aerospace Sciences Meeting including The New Horizons Forum and Aerospace Exposition.
Laboratory measurements of the evolution of a vortex pair from a lifting wing in a nonstratified, nonturbulent, and unsheared fluid are presented. The new aspect of these measurements is that we have been able to follow vortex evolution from generati
Autor:
Donald P. Delisi, George C. Greene
Publikováno v:
47th AIAA Aerospace Sciences Meeting including The New Horizons Forum and Aerospace Exposition.
Laboratory measurements of low Reynolds number 3-D wings and vortex wakes generated by the wings were obtained in a water-filled towing tank. Detailed measurements follow the vortices from near generation through vortex reconnection and the evolution