The climb must be powered by a high-powered ground-based light or laser aimed at a cell facing Earth, a concept known as power beaming.

升降装置必须由地面上的大功率的光或激光来提供能量，光或激光对准面向地面的电池。这就是所谓的“电力集束”概念。

youdao

The batteries take one hour to charge and can provide enough power for 15 minutes of autonomous aerobatics at speeds of up to 250kph and a climb rate of around 5.3m per second.

电池可以在完成1小时的充电后，并能在航速250公里/小时的情况下提供15分钟的飞行，同时满足5.3米/秒的爬升速度。

youdao

The plan is to climb to higher altitudes during the day, and trade that altitude for airspeed, supplemented with battery power, to continue flying during the night.

飞机在白天利用太阳能爬升到较高的高度，然后利用高度把势能转换成飞行速度，给电池组充电，用来维持夜晚的航行。

youdao

This happens to be the noisiest phase of the flight, when the jet is at a full-power climb.

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