HIGH ALTITUDE CLEAR AIR TURBULENCE MODELS FOR AIRCRAFT DESIGN AND OPERATION
Abstract
This report presents the results of an analysis of the turbulence data derived from the high altitude clear air turbulence (HICAT) flight investigation and from the pertinent meteorological and geophysical data. The curves representing the power spectra have various slopes and shape. These curves are grouped into categories. One group of categories are predominantly cases of flights over mountains. A second group of categories are mostly from flights over flatland. Theoretical, statistical, and practical forecasting analyses in addition to flight records all indicate that large horizontal temperature gradients and large changes in vertical temperature gradient are closely associated with HICAT and conversely small horizontal temperature gradients and nearly constant vertical temperature gradients are closely associated with smooth air.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1968
- Accession Number
- AD0839673
Entities
People
- David E. Waco
- David T. Prophet
- Edward V. Ashburn
Organizations
- Lockheed Martin