CFD ANALYSIS OF A BLENDED BODY AIRCRAFT

Abstract

Flying airplanes to high altitudes requires high lift, which can be achieved by better design, increased wingspan and reduced drag. Aircraft with BWB or Blended wing body suit the need to fly at high altitudes and have better stealth properties (avoiding RADAR detection) due to their triangular shape. This study is related to the investigation of a concept airplane by changing the design parameters using CFD software results. The mixed body aircraft CAD model is developed in Creo design software and CFD simulation is performed using ANSYS CFX. The values of aerodynamic force, lift force and pressure are determined for 2 aircraft with different taper ratios and different angles of attack. A low angle of attack angle of attack is found to be 180 and a high bank angle of attack if the angle of attack is found to be 150. Vortex formation was noted at the rear of the aircraft.