한국전산유체공학회:학술대회논문집
- 2007.10a
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- Pages.149-156
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- 2007
NUMERICAL SIMULATION OF THE INTERFERENCE EFFECT OF EXTERNAL STORES AND TAIL WING SURFACES OF A GENERIC FIGHTER AIRCRAFT
전투기 형상의 외부 장착물과 꼬리 날개 공력 간섭에 대한 수치적 연구
Abstract
A three-dimensional inviscid flow solver has been developed based on unstructured meshes for the simulation of steady and unsteady flowfields around a generic fighter aircraft and for the investigation of the aerodynamic interference between the external stores and the tail surfaces. The flow solver is based on a vertex-centered finite-volume method and an implicit point Gauss-Seidel relaxation scheme. To validate the flow solver, calculations were made for a steady flow and the computed results were compared with experimental data. An unsteady time-accurate computation of the generic fighter aircraft with external stores at transonic flight conditions showed that the external stores cause undesirable vibration on the horizontal tail surface due to the mutual interference between their wake and the horizontal tail surface. It was shown that downward deflection of the trailing edge flap significantly reduces the undesirable interference effect.
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