Lift, drag and thrust at high flight Mach number

Abstract

To assess the aerodynamic merits of a particular configuration it is convenient if similarity parameters can be found that allow comparison with other vehicles at different Mach numbers and lift coefficients. A pair of such similarity parameters occurs naturally in the study of 'direct' and 'interference' lift. The use of these parameters assists in the optimization of lift per unit drag at supersonic speeds. The designer can, for example, use these improvements to reduce wing size and structure mass. This paper derives these similarity parameters and illustrates their use.

Investigation on the Debonding Failure Model of Anchored Polyurea Coating under a High-Velocity Water Flow and Its Application

“…where ρ and v are the density and velocity of water, respectively, and S is the projected area of the water flow on the surface of the polyurea-based coating. C L is the coefficient of the lifting force, which is determined by the direction of the water flow, Mach number, and Thunder number, and the value adopted is 0.08 [31].…”