China Military Network reporter Zhang Wang, correspondent Wang Mingyan, Wu Yuyang

　　每年春季，位于酒泉的卫星发射中心都要经历一场“防风大考”，仅4月份，这里阵风7-8级的大风扬沙天气平均累计超过10天。为了最大程度降低大风扬沙天气对航天发射任务的影响，发射场通过系统的科学监测和精细管控，为发射任务撑起一片“无尘蓝天”。让我们一起看看来自发射场的“防沙秘籍”。

　　为了规避风沙天气给航天发射带来的不利影响，东风气象室一个月前便开始了气象准备工作，完成了关键设备的状态检查并在周边关键区设置自动气象站，针对4月份气候特点开展了历史大风扬沙天气的重点专题分析，并对往年4月份天气出现的一些偏差个例进行分析，总结归纳原因，以提高对复杂天气过程的预报认识。

The meteorological staff of the launch center studied and judged the meteorological situation

　　神舟二十号载人飞船完成转运

After receiving the blue warning of strong winds and sand, the platform of the launch site quickly activated the protection plan, from the sealing of the tower to the continuous monitoring of the temperature and humidity of the air conditioning professional 24 hours, and staged a "three-dimensional wind and sand resistance war".

For all the holes and gaps of the tower, the professional personnel of the launch site platform use explosion-proof mud glue and foaming material to plug them. "From the bottom of the tower to the top of the tower, from top to bottom and from bottom to top, we repeatedly check to ensure that every hole does not leave the slightest gap." Gao Fei, a scientific and technological personnel, said.

Technicians are plugging holes in the tower

"We also set up sealed partitions in sections inside the tower to form multiple independent protection zones, which can avoid the spread of sand and dust even if it encounters local impacts." Liu Jintao, a scientific and technological personnel, introduced.

Technicians are setting up sealed partitions inside the tower

Physical blockade is an "iron wall" against wind and sand, and air purification may be called a further upgrade of the ability to guard rockets and spaceships. After receiving the weather warning of strong wind and sand, the launch site immediately replaced the filter screen of the air conditioning unit in the transmission tower with a new high-density filter, which effectively blocked the wind and sand particles from entering the equipment, greatly improved the filtration efficiency, and made every wisp of air entering the tower go through "deep purification".

At the same time, in order to prevent the erosion of the external body of the air conditioner by wind and sand, the post personnel use sealant and protective materials to comprehensively strengthen the gaps and interfaces of the air conditioner shell, effectively reduce the risk of wind and sand damage, and ensure that the equipment runs as usual.

A technician inspects an external air conditioning unit

"Windbreak sand is not simply to plug holes, but to keep the entire launch tower under control in dynamic changes." Pan Tao, a scientific and technological personnel, said.

Technicians are replacing filters for air conditioning units in the tower

Thanks to the unremitting efforts of the scientific and technological personnel at the launch site, the launch tower was finally transformed into a "sealed fortress", and the sand and dust particles had nowhere to enter.

　　目前，发射场设施设备状态良好，正在按计划开展发射前的各项功能检查、联合测试等工作。让我们共同期待神舟二十号载人飞船以最完美的姿态，续写中国载人航天传奇！

Source: China Military Network