NTRS - NASA Technical Reports Server

As of October 27, 2023, NASA STI Services will no longer have an embargo for accepted manuscripts. For more information visit NTRS News.

Back to Results
Numerical optimization of circulation control airfoilsA numerical procedure for optimizing circulation control airfoils, which consists of the coupling of an optimization scheme with a viscous potential flow analysis for blowing jet, is presented. The desired airfoil is defined by a combination of three baseline shapes (cambered ellipse, and cambered ellipse with drooped and spiralled trailing edges). The coefficients of these shapes are used as design variables in the optimization process. Under the constraints of lift augmentation and lift-to-drag ratios, the optimal airfoils are found to lie between those of cambered ellipse and the drooped trailing edge, towards the latter as the angle of attack increases. Results agree qualitatively with available experimental data.
Document ID
Document Type
Conference Paper
Tai, T. C.
(U.S. Naval Material Command, David W. Taylor Naval Ship Research and Development Center Bethesda, Md., United States)
Kidwell, G. H., Jr.
(NASA Ames Research Center Helicopter and Powered Lift System Div., Moffett Field, Calif., United States)
Vanderplaats, G. N.
(U.S. Naval Postgraduate School Monterey, Calif., United States)
Date Acquired
August 11, 2013
Publication Date
January 1, 1981
Subject Category
Report/Patent Number
AIAA PAPER 81-0016
Meeting Information
Meeting: Aerospace Sciences Meeting
Location: St. Louis, MO
Start Date: January 12, 1981
End Date: January 15, 1981
Sponsors: American Institute of Aeronautics and Astronautics
Accession Number
Distribution Limits

Available Downloads

There are no available downloads for this record.
No Preview Available