Experimental and Computational Studies of Twin-Vertical-Tail Buffet
Characteristics and mechanism of twin-vertical-tail buffet response on airplane configuration with wing root leading edge extension (LEX) were studied by both experiment and computation. Low-speed wind tunnel experiments were carried out to measure the root bending moment and tip acceleration of vertical tail. Vortical flow patterns were visualized via laser light sheet technique. Three-dimensional computation was performed to solve the unsteady Euler equations on rigid model. The results indicate that (1) bursting of vortices emanating from LEX is the main source of twin-vertical-tail buffet; (2) the Euler equations is able to predict the general characteristics of vertical-tail buffet response reasonably.
Wei Yang, Mamtimin Geni, Tiejun Wang and Zhuo Zhuang
Q. Yang et al., "Experimental and Computational Studies of Twin-Vertical-Tail Buffet", Advanced Materials Research, Vols. 33-37, pp. 1241-1246, 2008