航天推进技术研究院主办
[1]张青松,范瑞祥,尕永婧,等.液体火箭金属膜盒式蓄压器的动力学模型[J].火箭推进,2021,47(02):81-86.
ZHANG Qingsong,FAN Ruixiang,GA Yongjing,et al.Dynamic model study of metal bellows accumulator for liquidlaunch vehicles[J].Journal of Rocket Propulsion,2021,47(02):81-86.
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ZHANG Qingsong,FAN Ruixiang,GA Yongjing,et al.Dynamic model study of metal bellows accumulator for liquidlaunch vehicles[J].Journal of Rocket Propulsion,2021,47(02):81-86.
液体火箭金属膜盒式蓄压器的动力学模型
《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]
卷:
47
期数:
2021年02期
页码:
81-86
栏目:
研究与设计
出版日期:
2021-04-21
- Title:
- Dynamic model study of metal bellows accumulator for liquidlaunch vehicles
- 文章编号:
- 1672-9374(2021)02-0000-06
- 分类号:
- V421.4
- 文献标志码:
- A
- 摘要:
- 蓄压器是抑制液体火箭POGO振动的重要装置,本文通过推导建立了更具普适性的蓄压器精细化动力学模型,给出了膜盒刚度、动质量以及膜盒组件数量对蓄压实际柔度参数、惯性系数的修正方法,该模型提高了输送系统液路频率的计算精度。针对带有充气管路的蓄压器结构形式,引入了充气管路的分布参数动力学模型。研究发现较长的充气管路不仅会对蓄压器产生一定的附加容积效应,同时会形成新的低频振动,影响蓄压器吸收压力脉动的能力。
- Abstract:
- Accumulator is an important device used for POGO prevention of liquid rockets. In this paper, a general and accurate dynamic model of bellows accumulator was developed by theoretical derivation. A corrected method of compliance and inertia parameters considering the mechanical stiffness, moving mass and number of bellows subassembly was present. This model improves the precision of the frequency calculation of the fluid feeding system. As to the accumulator with charging duct, a distributed parameter model was introduced to research the influence of a long duct for the accumulator. The research shows that a long charging duct will make additional volume and meantime introduce low frequency vibration, which affects the accumulator performance.
参考文献/References:
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相似文献/References:
[1]靳爱国.蓄压器对发动机试车液路固有频率影响分析[J].火箭推进,2005,31(05):15.
Jin Aiguo.Effect of buffer on frequency of engine flow system in hot tests[J].Journal of Rocket Propulsion,2005,31(02):15.
备注/Memo
收稿日期:2020-08-23
作者简介:张青松(1981—),男,硕士,高级工程师,研究领域为运载火箭动力系统设计。
更新日期/Last Update:
1900-01-01