Crashnburn
Pattern Altitude
https://www.fastcompany.com/90388931/this-plane-can-fly-500-miles-powered-entirely-by-hydrogen
The hydrogen has to come from somewhere, and you can't mine nor pump hydrogen out of the ground. Essentially, you have to electrolyze water, which takes energy. What's worse, is for every 2 watts you put into electrolyzing water, you get 1 watt back.
The electricity used for electrolysis comes from wherever produces that electricity, which is mainly coal. So, the so-called zero emissions plane actually creates more emissions than if it were powered by gasoline.
The greenies seem to keep for getting TANSTAAFL. "There Ain't No Such Thing As A Free Lunch" - Robert Heinlein in _The_Moon_Is_A_Harsh_Mistress_.
At least they aren't using rare earth elements to produce batteries that produce the equivalent of 80K miles of pollution per vehicle.
The hydrogen has to come from somewhere, and you can't mine nor pump hydrogen out of the ground. Essentially, you have to electrolyze water, which takes energy. What's worse, is for every 2 watts you put into electrolyzing water, you get 1 watt back.
The electricity used for electrolysis comes from wherever produces that electricity, which is mainly coal. So, the so-called zero emissions plane actually creates more emissions than if it were powered by gasoline.
The greenies seem to keep for getting TANSTAAFL. "There Ain't No Such Thing As A Free Lunch" - Robert Heinlein in _The_Moon_Is_A_Harsh_Mistress_.
At least they aren't using rare earth elements to produce batteries that produce the equivalent of 80K miles of pollution per vehicle.