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首页> 外文期刊>Aerospace science and technology >Longitudinal aerodynamic modeling and verification for air-launch-to-orbit system during stage separation
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Longitudinal aerodynamic modeling and verification for air-launch-to-orbit system during stage separation

机译：舞台分离期间空气发射到轨道系统的纵向空气动力学建模与验证

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摘要

The stage separation is one of key issues for air-launch-to-orbit system. In this process, the elastic deformation of carrier causes periodic pulsation in interference aerodynamics and may lead to modal coupling and dynamics instability of spacecraft. The dynamic responses and stability of the two vehicles should be considered carefully. The CFD-based dynamic simulation method has high accuracy but requires large computation cost. In this study, a new reduced-order modeling method is developed, which is for unsteady aerodynamics of the air-launch-to-orbit system with considering the elastic deformations of carrier. Based on the physical mechanism of interference aerodynamics factors, the model input parameters are decoupled and the modeling difficulty is reduced. By coupling the unsteady aerodynamic model, structural dynamics equations and rigid body dynamic equations, the longitudinal dynamic responses of air-launch-to-orbit system during stage separation are simulated. Through comparison, those results have good agreement with traditional CFD-based method, and the simulation efficiency of new method is improved greatly. The new modeling method is applicable to the air-launch-to-orbit system and can provide guidance for similar engineering issues. (C) 2021 Elsevier Masson SAS. All rights reserved.
机译：阶段分离是空气发射到轨道系统的关键问题之一。在该过程中，载体的弹性变形导致干涉空气动力学中的周期性脉动，并且可能导致宇宙飞船的模态耦合和动力量不稳定。应仔细考虑两辆车的动态响应和稳定性。基于CFD的动态仿真方法具有高精度，但需要大的计算成本。在这项研究中，开发了一种新的降低的阶阶建模方法，这是考虑载体弹性变形的空气发射到轨道系统的不稳定空气动力学。基于干扰空气动力学因子的物理机制，模型输入参数分离，降低了建模难度。通过耦合不稳定的空气动力学模型，结构动力学方程和刚体动态方程，模拟了阶段分离期间的空气发射到轨道系统的纵向动力响应。通过比较，这些结果与传统的基于CFD的方法有良好的一致性，新方法的仿真效率大大提高。新型建模方法适用于空气发射到轨道系统，可以为类似工程问题提供指导。 （c）2021 Elsevier Masson SAS。版权所有。

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  • 来源
    《Aerospace science and technology》 |2021年第10期|106915.1-106915.21|共21页
  • 作者

    Yang Lei; Ye Zhengyin; Li Wenhao; Sun Quanhua;

  • 作者单位

    Chinese Acad Sci Inst Mech Lab Aerosp Sci & Technol Beijing 100190 Peoples R China|Chinese Acad Sci Inst Mech Key Lab Mech Adv Mfg Beijing 100190 Peoples R China;

    Northwestern Polytech Univ Sch Aeronaut Natl Key Lab Aerodynam Design & Res Xian 710072 Peoples R China;

    Chinese Acad Sci Inst Mech Lab Aerosp Sci & Technol Beijing 100190 Peoples R China|Chinese Acad Sci Inst Mech Key Lab Mech Adv Mfg Beijing 100190 Peoples R China;

    Chinese Acad Sci Inst Mech Lab Aerosp Sci & Technol Beijing 100190 Peoples R China|Chinese Acad Sci Inst Mech State Key Lab High Temp Gas Dynam Beijing 100190 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Store separation; Aerodynamic modeling; Interference aerodynamics; Dynamic simulation; Air-launch-to-orbit;

    机译：分离;空气动力学建模;干扰空气动力学;动态仿真;空气发射到轨道;

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