If the prototype succeeds in flying through the night then the design of its successor will be finalised.
如果样机成功通过夜间飞行，那么其接替飞机的设计将会被定型。
The prototype made a "flea hop" in December 2009, flying a distance of 350 meters one meter above the runway of a military airbase near Zurich.
去年12月“阳光动力”样机曾在瑞士城市苏黎世附近一座空军基地进行了首飞，飞行高度大约1米，飞行距离约为350米。 此次飞行后被称做“跳蚤跳”。
The companies plan to have a ground-based demonstrator engine prototyped and firing by 2020 and a further prototype flying on a test aircraft by 2025.
两家公司计划先建造用于地面试验的原型机，并在2020年之前点火测试，随后在2025年以前完成原型机试飞。
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