A Theoretical and Experimental Investigation of Vortex Flow Control for High Lift Generation.
Abstract
A theoretical and experimental program was conducted to investigate the effects of vortex flow control on the performance characteristics of a low aspect ratio, highly-swept lifting surface. Experimentally, it was determined that the lift-curve slope and the maximum lift coefficient could be increased above that of a basic plan-form by the use of leading edge separators. A theoretical prediction technique based on a modification of a doublet vortex lattice approach to account for flow separation and external interacting vortices was found to realistically predict the measured lifting characteristics of the airfoil at high angles of attack. Favorable correlation between measured and predicted results was shown both in the total lift and in the pressure distributions. The theoretical results suggest that modest refinements can make the analysis a versatile tool for the study of the performance and maneuverability characteristics of low aspect ratio aircraft at high angles of attack. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1976
- Accession Number
- ADA042917
Entities
People
- John C. Balcerak
- Richard P. White Jr.
- Santu T. Gangwani