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[Ingenuity Mars Helicopter Makes 3rd Flight]
NASA's Ingenuity helicopter successfully completed its third flight on Mars yesterday.
The helicopter rose to a height of five meters, the same altitude as its second flight but this time Ingenuity flew farther and faster, traveling over 50 meters at a top speed of 2 meters per second. NASA engineers are now preparing to push the helicopter to its limits for its fourth flight. The Ingenuity experiment will end in one month in order to let the Perseverance rover, which carried the helicopter to the red planet, return to its main task - searching for signs of past microbial life on Mars.
美国宇航局的火星直升机"机智"号昨天第三次在火星表面起飞，此次飞行高度仍为5米左右，但飞行范围则较之前两次大幅提升，飞行50米之后再返回降落地点，总飞行距离达到了100米，大大超过了第二次飞行的4米。此次飞行速度也较上次更快，达到每秒两米。
接下来，"机智"号还将准备进行第四次飞行，难度和风险还将继续增加。"机智"号直升机的实验将在一个月后结束，届时，搭载"机智"号的"毅力"号火星车将回归其主要任务：寻找火星上过去可能存在过的生命迹象。
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