Numerical Investigation of High Attack Angle Flow on 760/450 Double-Delta Wing in Incompressible Flow
Along with increasing development of generation of supersonic planes especially fighters and request for increasing the performance and maneuverability scientists and engineers suggested the delta and double delta wing design. One of the areas which was necessary to be researched, was the Aerodynamic review of this type of wings in high angles of attack at low speeds that was very important in landing and takeoff the planes and maneuvers. Leading Edges of the wings,cause the separation flow from wing surface and then formation of powerful vortex with high rotational speed which studing the mechanism and location of formation and also the position of the vortex breakdown in high angles of attack is very important. In this research, a double delta wing with 76o/45o sweep angles at high angle of attack in steady state and incompressible flow were numerically analyzed with Fluent software. With analaysis of the numerical results, we arrived the most important characteristic of the double delta wings which is keeping of lift at high angles of attacks.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1079238Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 2335
 Robert C. Nelson and Alain Pelletier,"The unsteady aerodynamics of slender wings and aircraft undergoing large amplitude maneuvers" ,_Progress in Aerospace Sciences 39 185-248,_April 2003.
 Sheshagiri K. Hebbar, Max F. Platzer and Feng-Hsi Li, "A Visualization Study Of The Vortical Flow Over A Double Delta Wing", AIAA-93- 3425, 1993.
 N.G. Verhaagen, L.N. Jenkins, S.B. Kern and A.E. Washburn, "A Study Of The Vortex Flow Over A 76/40-deg Double Delta Wing", AIAA- 2002-3455, 2002.
 M.R. Allan, K.J. Ba dcock, G.N. Barakos, and B.E.R ichards, "Steady RANS_Simulations of A70┬░ Delta Wing", May 2003.
 Myong H. Sohn and Hyoung S. Chung," Effects of Strake Planform on the Vortex Flow of a Double-DeltaWing", AIAA 2006-3498, June 2006.
 Polhamus e.c, "Vortex Lift Reasearch Early Contributions and Some Curent Challenges" NASA Conference Publication 2416, Vol.1 ,1986