Report
Unsteady interaction mechanism of transverse stage separation in hypersonic flow for a two-stage-to-orbit vehicle
| العنوان: | Unsteady interaction mechanism of transverse stage separation in hypersonic flow for a two-stage-to-orbit vehicle |
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| المؤلفون: | Wang Y(王粤), Wang YP(汪运鹏), Jiang ZL(姜宗林) |
| المساهمون: | 汪运鹏 |
| سنة النشر: | 2023 |
| المجموعة: | IMECH-IR (Institute of Mechanics, Chinese Academy of Sciences) / 中国科学院力学研究所机构知识库 |
| مصطلحات موضوعية: | Two-stage-to-orbit, Hypersonic, Numerical simulation, Stage separation, Aerodynamic interaction, Unsteady flow, Center of gravity, 力学::流体力学, 力学::流体力学::空气动力学, 力学::流体力学::计算流体力学, 力学::应用力学, 航空、航天科学技术::航空、航天科学技术基础学科, 航空、航天科学技术::飞行器发射、飞行技术, 一类/力学重要期刊 |
| الوصف: | Due to the complex aerodynamic interaction, the safe separation of two stages is one of the challenges for the successful launch of a two-stage-to-orbit (TSTO) vehicle. The unsteady hypersonic flow past the parallel-staged TSTO model during stage separation at Ma = 6.7 and Re = 8.86 × 10 5 m −1 is numerically studied using laminar flow simulation. The TSTO model consisted of a waverider and a spaceplane as booster and orbiter, respectively. The effect of the center of gravity (CoG) of the orbiter on the unsteady aerodynamic interference during stage separation of TSTO is analyzed in detail with 0.65 ≤ l CoG / l o ≤ 0.80. In addition, the aerodynamic characteristics, dynamic behaviors, and unsteady wall pressure variation are compared in different cases. The results show that the CoG regime is limited to 5% of the orbiter length for absolutely safe separation, i.e., 0.70 < l CoG / l o < 0.75. As for the unsuccessful separation, the orbiter tends to fly nose-down if l CoG / l o ≤ 0.70 while tending to pitch or somersault when l CoG / l o = 0.80. Furthermore, the pitching moment of the orbiter, which is influenced by the interstage shock wave–boundary layer interaction and shock–shock interaction, dominates the separation safety, and the specific flow mechanisms concerning the separation behavior associated with aerodynamic interference in different cases are analyzed in detail. |
| نوع الوثيقة: | report |
| اللغة: | English |
| Relation: | Physics of Fluids; http://dspace.imech.ac.cn/handle/311007/92003 |
| DOI: | 10.1063/5.0151663 |
| الاتاحة: | http://dspace.imech.ac.cn/handle/311007/92003 https://doi.org/10.1063/5.0151663 |
| رقم الانضمام: | edsbas.CC4157D1 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1063/5.0151663 |
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