Computation of F/A-18 tail buffet

Ken Gee; Scott M. Murman; Lewis B. Schiff

doi:10.2514/3.47073

Computation of F/A-18 tail buffet

Journal of Aircraft ◽

10.2514/3.47073 ◽

1996 ◽

Vol 33 (6) ◽

pp. 1181-1189 ◽

Cited By ~ 12

Author(s):

Ken Gee ◽

Scott M. Murman ◽

Lewis B. Schiff

Keyword(s):

Tail Buffet

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ACTIVE VORTICAL FLOW CONTROL FOR ALLEVIATION OF TWIN-TAIL BUFFET OF GENERIC FIGHTER AIRCRAFT

Journal of Fluids and Structures ◽

10.1006/jfls.2000.0378 ◽

2001 ◽

Vol 15 (6) ◽

pp. 769-789 ◽

Cited By ~ 7

Author(s):

E.F. SHETA ◽

V.J. HARRAND ◽

L.J. HUTTSELL

Keyword(s):

Flow Control ◽

Vortical Flow ◽

Fighter Aircraft ◽

Tail Buffet

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VORTEX CONTROL FOR TAIL BUFFET ALLEVIATION ON A TWIN-TAIL FIGHTER CONFIGURATION

10.4271/892221 ◽

1989 ◽

Cited By ~ 3

Author(s):

Dhanvada M. Rao ◽

C. K. Puram ◽

Gautam H. Shah

Keyword(s):

Vortex Control ◽

Tail Buffet

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Prediction of Vertical Tail Buffet Using CFD/CSD Coupling Method

Mathematical Problems in Engineering ◽

10.1155/2021/6295332 ◽

2021 ◽

Vol 2021 ◽

pp. 1-9

Author(s):

Bing Han ◽

Min Xu

Keyword(s):

Vortex Breakdown ◽

Peak Frequency ◽

Basis Functions ◽

Resonance Phenomenon ◽

Structural Dynamic ◽

Flexible Tail ◽

Bending Mode ◽

Tail Structure ◽

Tail Buffet ◽

Modal Coordinates

The vertical tail buffet induced by the vortex breakdown flow is numerically investigated. The unsteady flow is calculated by solving the RANS equations. The structural dynamic equations are decoupled in the modal coordinates. The radial basis functions (RBFs) are employed to generate the deformation mesh. The buffet response of the flexible tail is predicted by coupling the three sets of equations. The results show that the presence of asymmetry flow on the inner and outer surface of the tail forced the structural deflection offsetting the outboard. The frequency of the 2nd bending mode of the tail structure meets the peak frequency of the pressure fluctuation upon the tail surface, and the resonance phenomenon was observed. Therefore, the 2nd bending responses govern the flow field surrounding the vertical tail. Finally, the displacement of the vertical tail is small, while the acceleration with a large quantitation forces the vertical tail undergoing severe addition inertial loads.

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