Improved Wave Drag Predictions Using Modified Linear Theory.
Abstract
The wave drag prediction method is based on a modified supersonic linear theory computer technique. The modified linear theory differs from ordinary linear theory in that it uses the exact, boundary condition, it uses th exact pressure coefficient equation, and it uses characteristic tracing to determine regions of influence. The theoretical and numerical techniques are described in detail. A computer user's manual is included which provides a detailed description of the inputs and outputs of the computer routine, including recommended guidelines for preparing the geometric input. Comparisons between predictions of drag or pressures using the modified linear theory are made for five cases with wind tunnel data or other theories. These comparisons verify the improved accuracy of the modified linear theory relative to ordinary linear theory, particularly for high Mach numbers and high surface slopes.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 07, 1982
- Accession Number
- ADA131634
Entities
People
- R. T. Stancil
Organizations
- Vought