通过直接冷却减轻高超音速热屏障,并通过抑制 leidenfrost 增强其冷却效果
Ji-Xiang Wang1,2,3,4, Mingliang Zhong5,6,7,8, Jia-Xin Li9
1Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, China. mejxwang@ust.hk.
Nature communications
|July 28, 2025
概括
使用结构热 (STA) 的新型直接液体冷却系统有效地管理高超音速飞行期间的极端热量. 这种先进的材料通过克服空气动力加热的挑战,确保了车辆的可重复使用性和成本效益.
科学领域:
- 航空航天工程 航空航天工程
- 材料科学 材料科学 材料科学
- 热力学是一种热力学.
背景情况:
- 超音速车辆面临着来自空气动力加热的重大挑战,称为热屏障.
- 现有的间接冷却方法 (再生,薄膜,透气) 通常是复杂和低效的.
- 重复使用性,机动性和成本效益的损失是高超音速车辆的关键问题,原因是热保护不足.
研究的目的:
- 提出和评估直接液体冷却系统,以减轻高超音速车辆的热屏障.
- 为了研究一块利的结构化热盔甲 (STA) 的高温热保护的有效性.
- 为极端空气动力加热场景展示一个高效和强大的热管理解决方案.
主要方法:
- 开发了一种直接液体冷却系统,采用金属纤维纳米/微结构热 (STA).
- 模拟的高超音速空气动力加热使用达到高达3000°C的butan和acetylene火焰进行.
- 进行了系统的循环和耐用性测试,以评估STA的性能和稳定性.
主要成果:
- 结构化热盔甲 (STA) 在极端模拟超音速加热条件下证明了有效的温度管理.
- 该STA材料成功地承受了远远超过其基材点的温度.
- 耐用性和循环测试证实了STA在严格条件下的特殊耐受性和强度.
结论:
- 拟议的使用结构热 (STA) 的直接液体冷却系统为高超音速车辆的热保护提供了有效的解决方案.
- 为了保持车辆的性能,STA材料能够提高Leidenfrost点并承受极端温度的能力至关重要.
- 这项研究为管理空气动力加热提供了可行的和强大的方法,提高了高超音速车辆的可重复使用性和成本效益.
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