In order to investigate the wicking performance of cryogenic propellants within metallic screens for space liquid acquisition devices, a modified one-dimensional macroscopic model is introduced. The model is successfully verified by the experimental data of both isothermal and superheated wicking. Dutch twill weave 200 × 1400 in the warp direction is chosen as the screen object. Three cryogenic propellants such as hydrogen, oxygen and methane are selected as the working fluids. The wicking performances at different thermal conditions (isothermal and superheated) and gravity levels (Earth, Mars, Moon and space) are investigated. Results show that the wicking velocity and maximal wicking height both have a negative correlation with the gravity and superheated degree. The wicking performance deviation between different fluids or different superheated conditions increases as the gravity decreases. LH 2 always has the fastest initial wicking velocity, but its wicking performance rapidly deteriorates to the worst at superheated conditions due to its strongest ability of heat transfer. The wicking performance of LO 2 is the worst at isothermal condition, but becomes better than that of LH 2 at superheated condition. Wicking of LCH 4 always has the largest maximum wicking height and performs the best among the three propellants under the same condition.

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不同热重条件下编织筛网低温推进剂芯吸性能研究

为了研究空间液体采集装置金属屏内​​低温推进剂的芯吸性能，引入了一种改进的一维宏观模型。该模型通过等温和过热芯吸的实验数据成功验证。选择经向 200 × 1400 的荷兰斜纹组织作为屏幕对象。工质选用氢气、氧气和甲烷三种低温推进剂。研究了在不同热条件（等温和过热）和重力水平（地球、火星、月球和太空）下的芯吸性能。结果表明，芯吸速度和最大芯吸高度均与重力和过热度呈负相关。不同流体或不同过热条件之间的芯吸性能偏差随着重力的降低而增加。LH 2 始终具有最快的初始芯吸速度，但由于其最强的传热能力，其芯吸性能在过热条件下迅速恶化至最差。LO 2 的芯吸性能在等温条件下最差，但在过热条件下比LH 2 好。LCH 4的芯吸始终具有最大的最大芯吸高度，并且在相同条件下的三种推进剂中表现最好。LO 2 的芯吸性能在等温条件下最差，但在过热条件下比LH 2 好。LCH 4的芯吸始终具有最大的最大芯吸高度，并且在相同条件下的三种推进剂中表现最好。LO 2 的芯吸性能在等温条件下最差，但在过热条件下比LH 2 好。LCH 4的芯吸始终具有最大的最大芯吸高度，并且在相同条件下的三种推进剂中表现最好。