Cold wave effects and height Aeolian | Chang Chang, third launched two meteorological factors | third | rocket in Xichang _ news

Xinhuanet, Xichang, December 1 (reporters Wang Jingguo and and Zhang Xiaoxia)-"cold and high altitude wind is two meteorological factors affecting Chang, third launch. "Meteorologists Jiang Xiaohua 1st Xichang satellite launch Center said in a recent interview with Xinhua.

Jiang Xiaohua said that the world's ten largest spaceport, the Xichang satellite launch Center one of the launch site of the climate conditions are more complex.

In 26 years of meteorological work Jiang Xiaohua, a senior weather expert, has participated in multiple rocket-launching mandate. He said Xichang year divided into dry and wet seasons. During the rainy season, lightning, precipitation, rain at night. During the dry season, launching major upper-air wind-affected. Xichang is a mountainous terrain, from North four weather systems can affect the direction of launch sites.

Cold waves are the most susceptible to weather in December, which directly affect local temperature changes, significant impact on launch. Jiang Xiaohua said, because before the rocket in low temperature fuel filling, liquid hydrogen and liquid oxygen on high temperature is, "higher or lower temperatures will change the filling of fuels. ”

"Upper-air winds on the rocket's trajectory will also have an impact. "Jiang Xiaohua said that if the wind direction with a rocket trajectory angle too much, will change the rocket trajectory. Must be accurate forecasts of upper wind prior to launch, to correct launch shoot. "This launch is in the dry season, so our biggest focus is one of the meteorological support to accurately forecast upper wind. ”

(Edit: SN098)
December 01, 2013 The website
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寒潮和高空风成影响嫦娥三号发射两大气象因素|嫦娥三号|火箭|西昌_新闻资讯

　　新华网西昌12月1日电(王经国、张晓霞)“寒潮和高空风是影响嫦娥三号发射的两大气象因素。”西昌卫星发射中心气象专家江晓华1日在接受新华社记者采访时说。

　　江晓华说，在全球十大航天发射场中，西昌卫星发射中心属于气候条件较为复杂的发射场之一。

　　从事26年气象工作的江晓华是一位资深气象专家，曾参加多次火箭发射任务。他说，西昌全年分为干季和雨季。在雨季，雷电多、降水多、夜雨多。在干季，发射主要受高空风影响。西昌属山区地形，来自东南西北四个方向的气象系统都会影响发射场。

　　寒潮是12月最易出现的天气，这直接影响当地的气温变化，对火箭发射影响较大。江晓华说，因为在火箭发射前要进行低温燃料加注，液氢、液氧对温度要求很高，“温度高一点或低一点，都会改变燃料的加注量。”

　　“高空风对火箭的飞行轨道也会产生影响。”江晓华说，如果风向与火箭飞行轨道夹角过大，会改变火箭飞行轨道。发射前必须对高空风进行准确预测，以修正发射射向。“这次发射任务正处于干季，所以我们气象保障最大的焦点之一就是要精确预测高空风。”

（编辑：SN098）
2013年12月01日13:28
新华网
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