TY - GEN
T1 - The effect of winglets for the Blended Wing Body civil aircraft
AU - Xiang, Yang
AU - Liu, Xiaojing
AU - Wu, Jianghao
PY - 2010
Y1 - 2010
N2 - The effect of the shape parameters of winglets on aerodynamic performance for the Blended Wing Body (BWB) civil aircraft is studied by computational fluid dynamics (CFD) method. The three main shape parameters are the angle of inclination, sweep angle and the height of winglets. It is shown that the winglets can change the load distribution, while weakening the lateral shock wave of external wing's, leading to the wave drag smaller. Meanwhile the winglets can increase the effective aspect ratio and the wing's lift in cruising. As a result, the height of winglets is 0. 24c, the angle of inclination is 15° and the sweep angle is 45°, Kmax of the aircraft is increased by 15 % compared with that without winglets. In addition, the winglets can play a role as an end-plate to prevent the wingtip vortex shedding and add to the effective aspect ratio to increase the lift of wings in take-off. As a result, CLmax can increase about 6∼8% and the stall angle of attack can delay about 2°∼3° for the BWB civil aircraft with winglets compared with that without winglets.
AB - The effect of the shape parameters of winglets on aerodynamic performance for the Blended Wing Body (BWB) civil aircraft is studied by computational fluid dynamics (CFD) method. The three main shape parameters are the angle of inclination, sweep angle and the height of winglets. It is shown that the winglets can change the load distribution, while weakening the lateral shock wave of external wing's, leading to the wave drag smaller. Meanwhile the winglets can increase the effective aspect ratio and the wing's lift in cruising. As a result, the height of winglets is 0. 24c, the angle of inclination is 15° and the sweep angle is 45°, Kmax of the aircraft is increased by 15 % compared with that without winglets. In addition, the winglets can play a role as an end-plate to prevent the wingtip vortex shedding and add to the effective aspect ratio to increase the lift of wings in take-off. As a result, CLmax can increase about 6∼8% and the stall angle of attack can delay about 2°∼3° for the BWB civil aircraft with winglets compared with that without winglets.
KW - Aerodynamic performance
KW - Blended Wing Body
KW - Computational fluid dynamics
KW - Winglet
UR - https://www.scopus.com/pages/publications/84914106071
M3 - 会议稿件
AN - SCOPUS:84914106071
T3 - Proceedings of 2010 Asia-Pacific International Symposium on Aerospace Technology, APISAT 2010
SP - 104
EP - 107
BT - Proceedings of 2010 Asia-Pacific International Symposium on Aerospace Technology, APISAT 2010
PB - Northwestern Polytechnical University
T2 - 2010 Asia-Pacific International Symposium on Aerospace Technology, APISAT 2010
Y2 - 13 September 2010 through 15 September 2010
ER -