The Boeing demonstrator uses a Proton Exchange Membrane (PEM) fuel- cell/lithium-ion battery hybrid system to power an electric motor, which is coupled to a conventional propeller.

• 波音的演示验证飞机将采用一套质子交换膜(PEM)氢燃料电池/轻质锂离子电池混合能源系统为电动机供电，再由电动机带动一个常规的螺旋桨转动。