Wind and Turbulence Information for Vertical and Short Take-Off and Landing (V/STOL) Operations in Built-Up Urban Areas - Results of Meteorological Survey
Abstract
Winds and turbulence have been measured at typical urban STOL and VTOL port sites and at a conventional rural airport during a 9-month period. These measurements have been used to develop a set of turbulence models for use in: design of V/STOL aircraft stability and control features, development of airworthiness criteria for certification of V/STOL aircraft, and simulation of the turbulence in the urban terminal environment of V/STOL aircraft. The model set includes spectral models, rms gust velocity models and turbulence length scale models. Probability distributions are given for gust velocities and length scales. The data obtained during the study and the models derived therefrom are compared with conventional, flat-terrain turbulence models and data. In addition, the report contains a review of atmospheric boundary layer theory and descriptions of the measurement sites, instrumentation and data processing. There is a discussion of spatial aspects of turbulence and an evaluation of the standard airport cup anemometer.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1975
- Accession Number
- ADA019216
Entities
People
- J. V. Ramsdell