Analysis of Severe Atmospheric Disturbances from Airline Flight Records
Analysis of Severe Atmospheric Disturbances from Airline Flight Records
- New search for: R. C. Wingrove
- New search for: R. E. Bach
- New search for: T. A. Schultz
- New search for: R. C. Wingrove
- New search for: R. E. Bach
- New search for: T. A. Schultz
Advanced methods were developed to determine time varying winds and turbulence from digital flight data recorders carried aboard modern airliners. Analysis of several cases involving severe clear air turbulence encounters at cruise altitudes has shown that the aircraft encountered vortex arrays generated by destabilized wind shear layers above mountains or thunderstorms. A model was developed to identify the strength, size, and spacing of vortex arrays. This model is used to study the effects of severe wind hazards on operational safety for different types of aircraft. It is demonstrated that small remotely piloted vehicles and executive aircraft exhibit more violent behavior than do large airliners during encounters with high-altitude vortices. Analysis of digital flight data from the accident at Dallas/Ft. Worth in 1985 indicates that the aircraft encountered a microburst with rapidly changing winds embedded in a strong outflow near the ground. A multiple-vortex-ring model was developed to represent the microburst wind pattern. This model can be used in flight simulators to better understand the control problems in severe microburst encounters.
Document information
Analysis of Severe Atmospheric Disturbances from Airline Flight Records
1989
7 pages
Report
No indication
English
Aeronautics , Dynamic Meteorology , Transportation Safety , Air Transportation , Clear air turbulence , Flight safety , Microbursts (Meteorology) , Vortex rings , Wind shear , Mathematical models , Aircraft control , Cruising flight , Flight mechanics , Flight simulation , Light aircraft , Remotely piloted vehicles , Wind effects