2024 Volume 72 Issue 1 Pages 11-20
Throughout the history of flight motion analysis, atmospheric disturbances have been stochastic colored noise with certain spectral characteristics. On the other hand, various terrain turbulences such as mountain waves, or clear-air-turbulence are more faithful to real meteorological phenomena when represented as a single or multiple vortex structure. In this study, we present an extension of the classical panel method to compute in practical time the aerodynamic six forces and moments acting on an aircraft in a turbulent field represented by a superposition of line vortices. By changing the number and combination of vortices, various types of turbulence can be generated around the aircraft. As a practical approximate calculation method for the flow field around an aircraft in turbulent air, this method is expected to be a simple alternative to CFD, which inevitably involves huge computational costs. The method can be extended to compressible flows as well. Three numerical examples are presented to demonstrate the reliability of the proposed method.
