The icing characteristics of supercooled large droplet(SLD)impacting carbon fiber-reinforced composites(CFRCs)remain poorly understood,hindering the enhancement of ice protection capabilities and the certification of ...The icing characteristics of supercooled large droplet(SLD)impacting carbon fiber-reinforced composites(CFRCs)remain poorly understood,hindering the enhancement of ice protection capabilities and the certification of ice-accreted composite aircraft.The paper systematically investigates the effects of the supercooling degree,the surface temperature,and the impact velocity on the ice accretion behavior of SLDs impacting carbon fiber-reinforced epoxy composite surfaces.To address the ice-prone nature of CFRCs,nanoparticle-modified anti-icing coatings are developed,and the icing characteristics of SLD-impacted modified carbon fiber-reinforced epoxy composite surfaces are analyzed.Results demonstrate that surface-modified carbon fiber-reinforced epoxy composite exhibits significantly delayed ice formation.Under conditions of droplet temperature(−15℃)and surface temperature(−18℃),the icing time of hydrophobic-modified CFRCs was delayed by over 1100 ms,representing a 5.4-fold improvement compared to the unmodified carbon fiber-reinforced epoxy composite.展开更多
旨在评估不同云微物理方案对飞机积冰预报性能的影响。通过比较分析2种云微物理方案,研究其在不同高度和时间点对飞机积冰潜势的预报效果。研究结果表明,NSSL(National Severe Storms Laboratory,美国国家强风暴实验室)和WDM6(WRF Doubl...旨在评估不同云微物理方案对飞机积冰预报性能的影响。通过比较分析2种云微物理方案,研究其在不同高度和时间点对飞机积冰潜势的预报效果。研究结果表明,NSSL(National Severe Storms Laboratory,美国国家强风暴实验室)和WDM6(WRF Double-Moment 6-class)这2种模式在不同高度层对积冰预报表现出显著差异。在不同高度层,研究了不同时间点的积冰潜势分布。结果显示,NSSL模式在多个时间点和高度层对积冰的预报更为准确,特别是在过冷水滴的分布和数量上显示出更为细致的变化趋势,这为未来改进积冰预报模型提供了重要参考。展开更多
基金supported by the National Key Laboratory of Advanced Composite Materials(No.KZ42191814)。
文摘The icing characteristics of supercooled large droplet(SLD)impacting carbon fiber-reinforced composites(CFRCs)remain poorly understood,hindering the enhancement of ice protection capabilities and the certification of ice-accreted composite aircraft.The paper systematically investigates the effects of the supercooling degree,the surface temperature,and the impact velocity on the ice accretion behavior of SLDs impacting carbon fiber-reinforced epoxy composite surfaces.To address the ice-prone nature of CFRCs,nanoparticle-modified anti-icing coatings are developed,and the icing characteristics of SLD-impacted modified carbon fiber-reinforced epoxy composite surfaces are analyzed.Results demonstrate that surface-modified carbon fiber-reinforced epoxy composite exhibits significantly delayed ice formation.Under conditions of droplet temperature(−15℃)and surface temperature(−18℃),the icing time of hydrophobic-modified CFRCs was delayed by over 1100 ms,representing a 5.4-fold improvement compared to the unmodified carbon fiber-reinforced epoxy composite.
