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Nonlinear aerodynamics of two-dimensional airfoils in severe maneuverThis paper presents a nonlinear theory of forces and moment acting on a two-dimensional airfoil in unsteady potential flow. Results are obtained for cases of both large and small amplitude motion. The analysis, which is based on an extension of Wagner's integral equation to the nonlinear regime, takes full advantage of the trailing wake's tendency to deform under local velocities. Interactive computational results are presented that show examples of wake-induced lift and moment augmentation on the order of 20 percent of quasi-static values. The expandability and flexibility of the present computational method are noted, as well as the relative speed with which solutions are obtained.
Document ID
19880034864
Document Type
Conference Paper
Authors
Scott, Matthew T. (Bell Helicopter Textron Fort Worth, TX, United States)
Mccune, James E. (MIT Cambridge, MA, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1988
Subject Category
AERODYNAMICS
Report/Patent Number
AIAA PAPER 88-0129
Funding Number(s)
CONTRACT_GRANT: AF-AFOSR-86-157
CONTRACT_GRANT: NAG1-658
Distribution Limits
Public
Copyright
Other