Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Roland L. Bowles"'
Autor:
Eelco Ras, Fanny M. Limon Duparcmeur, Sander van Lochem, Randal L. VanValkenburg, Thijs Gloudesman, Nashat N. Ahmad, Roland L. Bowles
Publikováno v:
6th AIAA Atmospheric and Space Environments Conference.
This paper describes a methodology for the integration and evaluation of fast-time wake models with flight data. The National Aeronautics and Space Administration conducted detailed flight tests in 1995 and 1997 under the Aircraft Vortex Spacing Syst
Publikováno v:
Applied optics. 30(15)
National attention has focused on the critical problem of detecting and avoiding windshear since the crash on 2 Aug. 1985 of a Lockheed L-1011 at Dallas/Fort Worth International Airport. As part of the NASA/FAA National Integrated Windshear Program,
Publikováno v:
43rd AIAA Aerospace Sciences Meeting and Exhibit.
Publikováno v:
40th AIAA Aerospace Sciences Meeting & Exhibit.
A numerical simulation of a convective turbulence event is investigated and compared with observational data. The specific case was encountered during one of NASA's flight tests and was characterized by severe turbulence. The event was associated wit
Publikováno v:
38th Aerospace Sciences Meeting and Exhibit.
Publikováno v:
30th Aerospace Sciences Meeting and Exhibit.
An algorithm for airborne in situ computation of the wind shear hazard index (F-factor) was developed and evaluated in simulation and verified in flight. The algorithm was implemented on NASA's B-737-100 airplane, and tested under severe maneuvering,
Autor:
Russell Targ, Roland L. Bowles
Publikováno v:
SPIE Proceedings.
As part of the NASA/FAA National Integrated Windshear Program, a measurable windshear hazard index that can be remotely sensed from an aircraft is presented. This will provide a pilot information about the wind conditions he will experience at some l
Publikováno v:
SPIE Proceedings.
The edge technique, a new method for measuring small frequency shifts, is described. The technique allows high-accuracy measurement of atmospheric winds (0.2-1 m/s) with a high vertical resolution (10 m) using currently available technology. With the
Publikováno v:
28th Aerospace Sciences Meeting.
A case is made for including anisotropy in a Monte Carlo flight simulation scheme of low-altitude wind-shear turbulence by means of power spectral density. This study attempts to eliminate all flight simulation-induced deficiencies in the basic turbu
Autor:
Roland L. Bowles, Walter Frost
Publikováno v:
Journal of Aircraft. 21:866-872
Conventional analyses of aircraft motion in the atmosphere have neglected wind speed variability on the scales associated with many atmospheric phenomena such as thunderstorms, low level jets, etc These phenomena produce wind shears that have been de