TY - GEN
T1 - Aerodynamic and Aeroelastic Analysis of Flying Wing with Split Drag-Rudder
AU - Xu, Wei
AU - Xu, Min
AU - An, Xiaomin
N1 - Publisher Copyright:
© 2019, Springer Nature Singapore Pte Ltd.
PY - 2019
Y1 - 2019
N2 - In this paper, aerodynamic and aeroelastic characteristics of flying wing with split drag-rudder are studied, using aeroelastic analysis method in time domain based on CFD/CSD (Computational Fluid Dynamics, CFD; Computational Structural Dynamics, CSD) coupling. Unsteady aerodynamic is obtained by solving Euler equations, and structural response is calculated by solving structural dynamic equations. CFD/CSD coupling uses predictive-multiple step loose coupling method, coupling interface data exchange uses constant volume transformation (CVT) method, and dynamic grid deforming uses transfinite interpolate (TFI) method. The flutter boundary of AGARD 445.6 wing is calculated with the coupled CFD/CSD method. Comparison between present results and experimental data is given, and there are good agreements in subsonic and transonic region, respectively, which illustrate the reliability of this method. Then, for the flying wing, the aerodynamic and aeroelastic characteristics are studied and revealed. Lift and drag coefficients with various cracking angles and angles of attack are calculated, and some change laws are concluded. Finally, flutter boundary of the flying wing is computed, and lift and drag coefficients in rigid and elastic conditions are given, after which several laws are summarized.
AB - In this paper, aerodynamic and aeroelastic characteristics of flying wing with split drag-rudder are studied, using aeroelastic analysis method in time domain based on CFD/CSD (Computational Fluid Dynamics, CFD; Computational Structural Dynamics, CSD) coupling. Unsteady aerodynamic is obtained by solving Euler equations, and structural response is calculated by solving structural dynamic equations. CFD/CSD coupling uses predictive-multiple step loose coupling method, coupling interface data exchange uses constant volume transformation (CVT) method, and dynamic grid deforming uses transfinite interpolate (TFI) method. The flutter boundary of AGARD 445.6 wing is calculated with the coupled CFD/CSD method. Comparison between present results and experimental data is given, and there are good agreements in subsonic and transonic region, respectively, which illustrate the reliability of this method. Then, for the flying wing, the aerodynamic and aeroelastic characteristics are studied and revealed. Lift and drag coefficients with various cracking angles and angles of attack are calculated, and some change laws are concluded. Finally, flutter boundary of the flying wing is computed, and lift and drag coefficients in rigid and elastic conditions are given, after which several laws are summarized.
KW - Aerodynamic characteristics
KW - Aeroelasticity
KW - Coupled CFD/CSD method
KW - Flying wing
KW - Split drag-rudder
UR - http://www.scopus.com/inward/record.url?scp=85070767443&partnerID=8YFLogxK
U2 - 10.1007/978-981-13-3305-7_24
DO - 10.1007/978-981-13-3305-7_24
M3 - 会议稿件
AN - SCOPUS:85070767443
SN - 9789811333040
T3 - Lecture Notes in Electrical Engineering
SP - 294
EP - 309
BT - The Proceedings of the Asia-Pacific International Symposium on Aerospace Technology, APISAT 2018
A2 - Zhang, Xinguo
PB - Springer Verlag
T2 - Asia-Pacific International Symposium on Aerospace Technology, APISAT 2018
Y2 - 16 October 2018 through 18 October 2018
ER -