ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Stepwise optimal design for shape and topology of variable camber wing
Received date: 2023-12-18
Revised date: 2024-01-16
Accepted date: 2024-03-05
Online published: 2024-03-14
Supported by
Aeronautical Science Foundation of China(2020Z006054002);Natural Science Foundation of Liaoning Province(2023-MS-243)
A stepwise optimal design of the aerodynamic shape and structural topology is proposed to meet the requirements of aerodynamic optimization and lightweight design for variable camber wings. Based on the results of aerodynamic optimization， we establish the topology optimal structure of the leading and trailing edge of the wing using the variable density method. A six-parameter parameterization method is proposed to describe the wing shape， local correction is performed using the B-spline curve， and the aerodynamic shape is optimized by the genetic algorithm. Based on the optimized aerodynamic shape of the wing， we employ a variable density topology optimization algorithm to establish an RAMP interpolation model， and design the leading and trailing edge topology structures and wing spanwise models. Additionally， using 3D printing technology， we process the topology structure of the variable camber wing with the leading and trailing edge， and conduct deformation tests. The aerodynamic simulation results show that the deformation range of a six parameter variable curvature airfoil is the largest with a continuous and smooth shape. Compared with the basic airfoil， the lift-drag ratio of the optimized wing increases by 35.7% and 4.4% during take-off and cruise， respectively. The deformation test results show that the equivalent deflection angles of the leading edge and trailing edge are 9.37° and 9.18°， respectively， with significant deflection effect， verifying the feasibility of stepwise optimization for the aerodynamic shape and topology.
Wei WANG , Hao WANG , Ai ZHOU , He FENG . Stepwise optimal design for shape and topology of variable camber wing[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2024 , 45(18) : 129990 -129990 . DOI: 10.7527/S1000-6893.2024.29990
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