SYSTEM FOR THE AEROELASTIC PREDICTION OF ROTOR CRAFT TAIL UNIT AND CONTROLLING METHOD FOR THE SAME

摘要

The present invention relates to a system for aeroelastic prediction for a tail unit of a rotorcraft, and a control method thereof. The control method comprises: a first step of allowing an analysis module to simulate the entire part of the rotorcraft including only a part of blades and to set and display an analysis model of the rotorcraft; a second step of allowing an analysis grid generation module to generate a grid to a predetermined size around the analysis model of the rotorcraft set by the analysis module and to display the generated grid, after the first step; a third step of allowing a calculation module to apply a turbulence calculation model to the analysis model around which the grid is generated by the analysis grid generation module, to input boundary conditions, and to perform an unsteady calculation, executing an unsteady analysis, after the second step; a fourth step of allowing a yawing moment extraction module to extract a yawing moment acting on the tail unit of the rotorcraft through a computing fluid analysis for the analysis model of the rotorcraft calculated and analyzed by the calculation module, and to display the extracted yawing moment, after the third step; and a fifth step of allowing an aeroelastic prediction module to perform FFT of the yawing moment data calculated by the yawing moment extraction module, analyze the size of vibration and a frequency, perform aeroelastic prediction for the tail unit of the rotorcraft, and output a prediction result. According to the present invention as described above, aircraft development costs and time may be reduced by predicting the size of vibration and performing the analysis of frequency quantitatively and precisely, wherein the vibration and frequency occur in a tail unit of a rotorcraft, through a computing fluid analysis.