Impact of Correlation Coefficients for the Design Parameters of an Air Intake of a Cruise Missile

Abstract

Cruise missiles are fast-moving, low-altitude guided bombs that travel perpendicular to the ground. This kind of missile is propelled by a turbofan engine since it needs to have a low specific fuel consumption (SFC) to help it cover greater distances. The air inlet to the engine must be appropriately let in because the power plant is an air-breathing engine and the path is practically terrain-hugging. The efficiency of a jet engine as a whole depends heavily on the performance of its inlets. Turbulent kinetic energy, turbulent dissipation rate, turbulent intensity, dynamic pressure, static pressure, absolute pressure, strain rate, skin friction, wall shear, local aerodynamic interface plane and tangential velocity were discovered to be the significant characteristics during the design of the inlet. The mass flow in the intake is typically affected by them. Understanding the relationships between the aforementioned parameters is important when designing the air intake. The corrected mass flow rate is approximately 30% higher at pressure ratio (PR)=0.5 than it is at PR=0.9. Wall shear, skin friction, pressure, turbulence intensity and turbulent kinetic energy are the main contributors. These account for 44.4% of the dataset's variation. With no design modifications, the identical intake might be used for higher flow rates (20% higher than the actual specified value).