%A LIU Xuecheng, LIANG Hua, ZONG Haohua, XIE Like, SU Zhi %T Experiment on plasma ice shape modulation based on NACA0012 airfoil %0 Journal Article %D 2022 %J Acta Aeronautica et Astronautica Sinica %R 10.7527/S1000-6893.2021.26283 %P 126283-126283 %V 43 %N 9 %U {https://hkxb.buaa.edu.cn/CN/abstract/article_18852.shtml} %8 2022-09-15 %X Ice shape modulation is a technology that significantly reduces the power of anti-icing and broadens the safety boundary of ice-tolerant flight under the premise of ensuring the aerodynamic performance and flight safety of the aircraft. It uses the power excited by the plasma actuator to change the dangerous spanwise continuous ice into safer intermittent ice, thereby improving the ice-containing flight capability of the aircraft. To verify the feasibility of the technology, plasma anti-icing experiments were carried out in the ice wind tunnel. The results show that the nanosecond pulse plasma actuator can change the continuous ice in the airfoil front edge into discontinuous ice. The formation of a wave-like front edge preliminarily verifies the ability of plasma ice shape modulation. To explore the effect of the technology on the aerodynamic performance of the wing, 3D printed typical ice shapes (glaze ice, rime ice, and mixed ice) were intermittently arranged on the NACA0012 airfoil at an incoming flow velocity of 30 m/s. The aerodynamic performance was tested in the wind tunnel, and the influence of different ratios of icing area to non-icing area and the width of the icicle L on the aerodynamic performance of the airfoil was compared and analyzed. The results show that for the glaze ice, the aerodynamic performance has the best improvement when the ratio of icing area to non-icing area is equal to 1∶1 (L=2 cm), with the maximum lift coefficient being increased by 34.8% and the drag coefficient at the angle of attack of 10° being reduced by 86.0% in comparison with the full-ice state. For the rime ice and mixed ice, the aerodynamic performance has the best improvement when the ratio is equal to 3∶2 (L=6 cm) and to 3∶2 (L=4 cm), with the maximum lift coefficient being increased by 19.7% and 30.6% respectively and the drag coefficient being significantly reduced in comparison with the full-ice state.