The linear and non-linear aerodynamics of three-surface aircraft conceptsIt is noted that most modern fighter aircraft rely on vortex interaction to provide lift enhancement at maneuvering angles of attack. It is shown that the close-coupled horizontal canard in a three-surface configuration provides a control surface which in addition to its other control functions, can be used to optimize this vortex interaction. Attention is given to a study intended to provide a detailed understanding of the aerodynamics of this type of configuration. The discussion examines the results of this investigation and hypotheses are presented to explain the linear and nonlinear aerodynamic phenomena observed.
Document ID
19800061708
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Agnew, J. W. (McDonnell Aircraft Co. Saint Louis, MO, United States)
Lyerla, G. W. (McDonnell Aircraft Co. St. Louis, Mo., United States)
Grafton, S. B. (NASA Langley Research Center Hampton, Va., United States)