钟俊1,2,3, 范晓樯1(
), 熊冰1, 陈磊1, 唐啸1
收稿日期:2025-07-31
修回日期:2025-09-01
接受日期:2025-12-01
出版日期:2025-12-17
发布日期:2025-12-15
通讯作者:
范晓樯
E-mail:xqfan@nudt.edu.cn
基金资助:
Jun ZHONG1,2,3, Xiaoqiang FAN1(
), Bing XIONG1, Lei CHEN1, Xiao TANG1
Received:2025-07-31
Revised:2025-09-01
Accepted:2025-12-01
Online:2025-12-17
Published:2025-12-15
Contact:
Xiaoqiang FAN
E-mail:xqfan@nudt.edu.cn
Supported by:摘要:
助推器和保护罩在同一时间从吸气式高超声速飞行器上解锁的“同时分离”时序方案,可利用内流道的充填高压,有利于飞行器的轴向分离过程。然而,在该时序方案分离初期,受运动激波、激波串及气体充填的作用,飞行器内流道中存在复杂多变的压力振荡,除传统的碰撞风险外,还有气体充填导致的潜在超压风险。结合重叠动网格技术,求解非定常雷诺平均Navier-Stokes(RANS)方程,对保护罩开启时飞行器内流道流场的建立过程进行数值计算,获得内流道的时序流场结构和非定常压力特性;分析开罩过程中内流场的演变机理,以及保护罩运动与级间距变化对分离初期流场建立过程的影响机制。结果表明:在“同时分离”时序方案的分离初期,内流道的充填与泄流过程中存在缝隙射流、运动激波扫掠、激波串前移、气体倒流与泄流过渡5个流动特征显著不同的阶段;保护罩开启时,内流道出现最大压力的主要因素是激波系增压、激波串增压和气体充填蓄压,并非是运动激波引起的压力跃升;内流道是否起动,决定了保护罩运动与级间距变化对内流道流场的作用是单向依赖关系还是耦合作用关系。
中图分类号:
钟俊, 范晓樯, 熊冰, 陈磊, 唐啸. 保护罩开启时高速飞行器内流场建立过程分析[J]. 航空学报, 2026, 47(8): 132638.
Jun ZHONG, Xiaoqiang FAN, Bing XIONG, Lei CHEN, Xiao TANG. Internal flow field development process of a hypersonic vehicle during protective cover separation[J]. Acta Aeronautica et Astronautica Sinica, 2026, 47(8): 132638.
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