Solid-fuel rockets can be launched from planes much faster than land-based liquid-fuelled rockets, where preparation can take days, weeks or longer, in part because it takes so much time to pump in the fuel, experts said. It is China’s first domestically developed heavy-lift transport plane and has a maximum take-off weight of more than 200 metric tons and a maximum payload of about 66 tons, the Daily quoted aviation experts as saying. Delivery of the Y-20 to the Chinese Air Force began in July.
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