Aerodynamics analysis on the effect of canard aspect ratio on blended wing body aircraft using CFD simulation

Abstract

Blended Wing Body Aircraft (BWB) is an unconventional aircraft that combined the conventional and flying wing aircraft's design. The unique design of the BWB offers a high fuel efficiency, low noise, and large payload volume for the size of aircraft. However, the BWB is unstable due to the absence of the its vertical stabilizer. A possible solution to improve this problem is using a horizontal control surface, the canard. For this purpose, the numerical simulation using NUMECA Computational Fluid Dynamic (CFD) software were conducted to obtain the aerodynamics forces subjected on this aircraft. The lift coefficient (CL), drag coefficient (CD) and moment coefficient (CM) are analysed at Mach number 0.1. The study is specifically to discuss the effect of canard setting angle ™ of BWB from ™ = -10° to 10° in that particular of aspect ratio (AR 2, 4, 6 and 8) towards aerodynamics parameters, CL, CD, and CM.