长五出征,“箭”指苍穹。11月3日20点43分,我国最大推力新一代运载火箭长征五号,在中国文昌航天发射场成功首飞(图1)。这是我国首次发射直径达到5米、起飞推力超过1000吨的大型运载火箭,这意味着我国运载火箭成功实现升级换代,中国从此由航天大国步入航天强国行列。这是一个令人激动的夜晚,长征五号首次发射,不仅是中国航天工程的盛事,也是航天集邮活动的盛宴。作为一名航天邮迷,笔者在现场见证了长征五号升空的历史时刻, Long five expedition, “Arrow ” refers to the sky. At 20:43 on November 3, China’s largest new-generation launch vehicle, the Long March 5, made its first flight at the Wenchang Space Launch Site in China (Figure 1). This is the first time that China launches a large launch vehicle with a diameter of 5 meters and a lift-off thrust of more than 1,000 tons. This means that our country’s launch vehicle has been successfully upgraded. China has now entered the ranks of a space powerhouse among the great space powers. This is an exciting night. The launch of the Long March 5 is not only a grand event of China’s space project, but also a feast for the spaceflight activities. As a space postman, I witnessed the historic moment of the launch of the Long March on the scene,