The vehicle is propelled to a flying altitude of 35,000 feet (10,668 meters) by two General Electric CF6-80C2A8 turbofans.

该飞行台通用电气 CF6-80C2A8 涡轮风扇发机驱至 35,000 英尺（10,668 米）的飞行高度。

It was powered more efficiently than previous 747s by a smaller version of the General Electric GEnx turbofan from the 787 Dreamliner.

787 梦想客机的通用电气 GEnx 涡轮风扇的较小版本提供比以前的 747 更高效的。

As a result, newer jets and their larger, high bypass turbofan engines  could have their spare powerplants transported in a variety of purpose-built freighters.

因此，较新的喷气式飞机及其更大的高旁通比涡轮风扇发机可以使用各种专用货机运输备用装置。

The BelugaXL is equipped with powerful Rolls-Royce Trent 700 turbofan engines, each capable of producing a maximum thrust of 71,000 lbf (316 kN).

BelugaXL 配备强大的劳斯莱斯 Trent 700 涡轮风扇发机，每台发机都能产生 71,000 磅（316 kN）的最大推。