Evaluation of derivative in damping in the Newtonian limit for non-planar wedge

Abstract

The current work derives the analytical expression for damping derivative of a non planar wedge when γ tends to one and Mach number tends to infinity. Ghosh’s developed strip theory is utilized to derive the expression of damping derivative. With regard to a variety of geometrical and flow characteristics, the current theory can forecast the damping derivatives of a non planar wedge. Prior to performing exhaustive calculations and trial research, it is vital to know about these damping derivatives in order to freeze and arrive at the geometrical and kinematic similarity parameters. The ongoing technique, which is exceptionally useful during the plan stage, predicts the damping subordinates in pitch for a flat wedge effortlessly. In the Newtonian limit, the equations derived for stability derivatives become precise. The pivot position is found to influence the damping derivative directly.Additionally, it has been noted that at high angles of attack, the centre of pressure shifts significantly from the leading edge to the trailing edge. Consequently, according to the viewpoint of stability, this behavior may be utilized to stabilize the aeronautical vehicle. Therefore, in this case, the expression for the damping derivative is non-linear, the findings have been affected accordingly. However, the behaviour is linear up to a fifteen degree angle of attack before the pattern becomes non-linear.