A CLIMATOLOGICAL-WIND TURBULENCE MODEL FOR ESTIMATING LOW ALTITUDE GUST LOADS
Abstract
The final phase in the development of a low altitude turbulence model for aircraft gust load application is described. The basic data used for this model are the B-66B low-level gust data and climatological wind data provided by the National Weather Records Center, Asheville, N. C. In preceding studies the turbulence spectrum functions, rms gust velocity/mean wind speed functions, and mean wind speed distribution functions were determined for variations in height, atmospheric stability, and terrain roughness conditions. In this final study needed to complete the turbulence model, climatological wind statistics are used to relate average mean wind speed characteristics to terrain, height, thermal stability, time of day and seasonal variations. The data represent locations throughout the United States. Based on results obtained from the climatological wind statistics, procedures are outlined for applying the turbulence model to estimate aircraft gust load exceedances for a specified low altitude operational history. A preliminary comparison of the model and B-52 service load data is made for an 800ft terrain-clearance altitude.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1968
- Accession Number
- AD0826980
Entities
People
- U. O. Lappe
Organizations
- New York University