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A Vortex Lattice Model for Delta Wings with Bursting
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English
Abstract
The problem considered here is that of predicting the non-linear behavior of delta wings at moderately high angles of attack and low speeds. In this operating regime, vortex lift and vortex bursting are important in determining the aerodynamic forces on the wing. The analysis begins with a vortex-lattice model to determine the circulatory lift and the leading-edge suction force. The vortex lift is then calculated from the suction force assuming that the leading edge vortices have not burst. The circulatory and vortex lift are then corrected for vortex bursting and flow separation using a semi-empirical approach to estimate the burst locations of the leading edge vortices.
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Citation
McCormick, B., "A Vortex Lattice Model for Delta Wings with Bursting," SAE Technical Paper 910991, 1991, https://doi.org/10.4271/910991.Also In
References
- Jones, R. T. Properties of Low-Aspect -Ratio Pointed Wings at Speeds Below and Above the Speed of Sound NACA Report No. 835 1946
- Polhamus, E. C. A Concept of the Vortex Lift of Sharp-Edge Delta Wings Based on a Leading-Edge Suction Analogy December 1966
- Erickson, Gary E. Flow Studies of Slender Vortices AIAA Paper No. 80-1423 July 14 1980
- Roos, F. W. Kegelman, J. T. An Experimental Investigation of Sweep-Angle Influence on Delta-Wing Flows AIAA Paper No. 90-0383 January 8 1990
- Hummel, Dietrich Redecker, Gunther Uber Den Einfluss Des Aufplatzens Der Wirbel Auf Die Aerodynamischen Beiwerte Von Deitaflugeln Mit Kleinem Seitenverhaltnis Beim Schiebeflug 1967
- McCormick, B. W. Vortex Bursting and Its Effect on the Unsteady Aerodynamic Characteristics of a 70 Degree Swept Delta Wing internal report to NASA Langley Research Center, Flight Dynamics Branch December 1987
- Brandon, Jay M. Shah, Gautam H. Effect of Large Amplitude Pitching Motions on the Unsteady Aerodynamics of Flat-Plate Wings AIAA Paper No. 88-4331 August 15
- Johnson, Joseph L. Grafton, Sue B. Yip, Long P. Exploratory Investigation of Vortex Bursting on the High-Angle-of-Attack Lateral-Directional Stability Characteristics of Highly-Swept Wings AIAA Aerodynamics Testing Conference March 1980