Impact of Various Mach Number and AOA on Concave Blunt Nose with Spike Angle Fifteen Degree

Authors

Channaveerayya, Mahesh, Srikanth

Abstract

To analyze fluid dynamics around a blunt nose with various spikes and angles of attack, you must first understand how the nose's shape and orientation affect airflow and aerodynamic forces such as lift and drag. Begin by figuring out the shape of the blunt nose and the spikes that will be attached to it. This entails describing the spikes' diameters, shapes, and positions in relation to the blunt nose. Use a CFD software program such as ANSYS Fluent, COMSOL Multiphysics, or OpenFOAM to simulate flow around the blunt nose with different spike configurations. Compare the performance of different spike designs and angles of attack using metrics such as lift, drag, and aerodynamic efficiency. Determine which combinations produce the required aerodynamic properties for the given application. Based on the simulation results, adjust the blunt nose and spikes to improve aerodynamics, reduce drag, or achieve other design objectives. According to the information provided, blunting an aircraft's front surface provides thermal protection. Despite this blunting, the nose still experiences intense thermal activity, necessitating significantly more thermal protection than the rest of the vehicle. To address the issue of wave drag, which is frequently caused by the blunt nose form, changes to the flow field in front of the vehicle are required. One way to make this change is to use a retractable nose spike. By deploying a retractable spike, the flow field can be altered, potentially reducing wave drag and improving aerodynamic performance.

Keywords

Concave Blunt Nose, Spike angle, CFD, Lift force, Mach number, drag force.

Impact of Various Mach Number and AOA on Concave Blunt Nose with Spike Angle Fifteen Degree. Channaveerayya, Mahesh, Srikanth. 2019. IJIRCT, Volume 5, Issue 2. Pages 25-31. https://www.ijirct.org/viewPaper.php?paperId=1902006