TY - JOUR
T1 - Effects of head deformation on aerodynamic characteristics of spinning vehicle
AU - Wu, Xiaosheng
AU - Lu, Tianyu
AU - Lei, Juanmian
N1 - Publisher Copyright:
© Institution of Mechanical Engineers.
PY - 2015/9/18
Y1 - 2015/9/18
N2 - Slight deformation of head influences the aerodynamic characteristics of head, after-body, and tail fins of spinning vehicle. The influence of head deformation was analyzed by the DES method. The results reveal that the frequency of interference on the after-body and fins caused by head deformation is different with the spin frequency of vehicle. It is more important that the interference caused by the head deformation has a lag phenomenon, which is related to the flow velocity and the spin rate of the vehicle. The normal force coefficient and side force coefficient of spinning vehicle with deformed head rise as the rotational speed of vehicle increases, and lag behind that in low spin rate conditions. In high Mach number conditions, the fluctuation magnitude of aerodynamic characteristics of spinning vehicle with deformed head is larger than those in low Mach number conditions.
AB - Slight deformation of head influences the aerodynamic characteristics of head, after-body, and tail fins of spinning vehicle. The influence of head deformation was analyzed by the DES method. The results reveal that the frequency of interference on the after-body and fins caused by head deformation is different with the spin frequency of vehicle. It is more important that the interference caused by the head deformation has a lag phenomenon, which is related to the flow velocity and the spin rate of the vehicle. The normal force coefficient and side force coefficient of spinning vehicle with deformed head rise as the rotational speed of vehicle increases, and lag behind that in low spin rate conditions. In high Mach number conditions, the fluctuation magnitude of aerodynamic characteristics of spinning vehicle with deformed head is larger than those in low Mach number conditions.
KW - Spinning vehicle
KW - aerodynamic characteristic
KW - aerodynamic interference
KW - head deformation
KW - numerical simulation
UR - http://www.scopus.com/inward/record.url?scp=84939520163&partnerID=8YFLogxK
U2 - 10.1177/0954410014563147
DO - 10.1177/0954410014563147
M3 - Article
AN - SCOPUS:84939520163
SN - 0954-4100
VL - 229
SP - 1975
EP - 1986
JO - Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering
JF - Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering
IS - 11
ER -