The heavy-lift carrier rocket Long March 5 blasts off Nov 3, 2016 at Wenchang Space Launch Center in South China's Hainan province.[Photo/Xinhua] BEIJING - China had successfully finished the first joint hot-fire test of a new solid-fuel booster engine and its servomechanism system, the manufacture said Saturday. With a diameter of two meters, the booster engine is expected to be used on China's next generation medium-sized carrier rocket, according to a China Aerospace Science and Technology Corporation statement. The segmented design was used in the engine, making it the most powerful solid-fuel engine at present, the statement said. make your own rubber band bracelets
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