ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2023, Vol. 44 ›› Issue (11): 127634-127634.doi: 10.7527/S1000-6893.2022.27634
• Fluid Mechanics and Flight Mechanics • Previous Articles
Yue WANG1,2, Yunpeng WANG1,2(), Chun WANG1,2, Zonglin JIANG1,2
Received:
2022-06-16
Revised:
2022-06-16
Accepted:
2022-06-28
Online:
2022-07-12
Published:
2022-07-08
Contact:
Yunpeng WANG
E-mail:wangyunpeng@imech.ac.cn
Supported by:
CLC Number:
Yue WANG, Yunpeng WANG, Chun WANG, Zonglin JIANG. Numerical study of longitudinal stage separation for parallel-staged two-stage-to-orbit vehicle[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2023, 44(11): 127634-127634.
Table 2
Comparison of stage separation schemes for TSTO
分离方式 | 优点 | 缺点 |
---|---|---|
横向分离[ | 1.高动压条件下,可依靠气动力进行被动式自由分离 2.两级可以产生纵向和法向加速度之差 | 1.分离过程中两级间隙发生变化,从缝隙流到通道流演变,流场结构复杂 2.高动压条件下,两级间气动干扰较强,可能会导致严重的气动力/热载荷 3.分离时阻力较大,轨道级在分离过程中需要发动机点火平衡阻力[ 4.较强的非定常气动特性变化不利于两级平稳分离,甚至发生再附碰撞 5.安全分离条件比较苛刻,需要来流攻角、两级相对夹角等多条件共同影响和确定 |
纵向分离 | 1.分离过程两级间隙很小,流场结构简单 2.两级间干扰弱,无强气动流场干扰结构,气动力/热载荷较小,分离阻力小 3.两级气动特性变化平缓,尤其助推级气动特性,有利于平稳分离,数值与试验暂未发现两级会发生碰撞 4.安全分离条件宽松,基本可以由分离时的攻角决定 | 1.需要额外能源进行主动式纵向分离,比如轨道级可能需要在助推级背面由发动机或其他装置助推分离 2.分离时间基本由助推方式决定,可能分离时间较长 |
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