A STUDY OF PREDICTION METHOD FOR DYNAMIC STABILITY DERIVATIVE USING STEADY STATE SIMULATION IN NON-INERTIAL COORDINATE

비관성 좌표계에서의 정상해석을 통한 동 안전 미계수 예측 기법 연구

In this paper, a prediction method for dynamic stability derivatives is studied using steady state simulations in rotational coordinates. The simulations require the extension of a standard CFD formulations based on inertial coordinate. A new CFD code based on the method are developed. Flows induced by steady circular motions of airfoils with a constant pitch rate are simulated with the code. From the numerical simulations, the pitch rate derivatives are obtained at various Mach numbers, and the results are compared with other numerical results. The numerical simulations show that the new code are capable of predicting dynamic stability derivatives.