Name: Can flying go green? | The Economist（Can flying go green? | The Economist）
Uploaded: 2021-02-21T21:22:49.000Z
Duration: 8 min 8 s
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Pan American World Airways Clipper flight 100…

It's an industry that has changed the world…

But is this aviation's moment for a green reset?

Covid has given an opportunity to build back green and faster

There is absolutely opportunity for companies like us…

...and will sustainable air travel cost more?

Of course it's exciting, every time we are testing something new

…that could potentially solve aviation's biggest challenge

This is the world's largest hydrogen-electric aircraft…

We hope for us achieving all the performance…

His vision—to fly without polluting the skies

In this plane, hydrogen is being used in a fuel cell…

Honestly, the only by-product of a fuel-cell operation is water

So water vapour gets out into the atmosphere…

Without decarbonising technologies like hydrogen…

…aviation could be responsible for 22%…

Because it can pack more energy into a smaller space…

…hydrogen has recently overtaken electric batteries…

…as the front-runner in the race for cleaner flying

…plans to introduce planes that burn hydrogen in engines as fuel

…the industry's carbon emissions by up to 75%

We actually looked early on at different ways…

Hydrogen-electric is the most efficient…

…and likely to be the lowest cost out of all

But there are plenty of obstacles to overcome…

For starters, installing the infrastructure…

…to distribute and produce hydrogen will be very pricey…

What's more, hydrogen will need to be produced sustainably…

…using renewable energy to split water molecules

And on top of that, hydrogen packs less energy…

…so powering long-haul flights will mean…

…you need to change the shape of the aeroplane

…you need more  sophisticated heat exchangers…

…to deal with the hydrogen coming through

Airlines are fighting for the future of their industry

…is that green technologies cost a lot of money…

…as the industry faces the worst economic crisis in its history…

…and as environmental movements like “flight-shaming” are on the up

Some in aviation are committed to greener skies

It's just they can't do it on their own…

…according to one of Britain's leading figures…

…is that the industry has really redoubled…

I think we are seeing many examples of leadership

But we may also need, you know, government support…

…in an environment where covid-19 has very clearly…

…before hydrogen-powered planes are ready for take-off

To reduce emissions in the nearer term…

Since July, the right engine of this Airbus A321…

Sustainable fuels are made from synthetic sources…

…or biological ones such as crops, algae…

…of going down the sustainable-aviation-fuel…

…the biofuel or the synthetic-jet-fuel route…

…so that what happens at the airport doesn't change

To pump up the flow of sustainable fuels…

…experts say governments need to offer incentives to airlines

That could mean rolling out taxes on dirty fuels…

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Can flying go green? | The Economist（Can flying go green? | The Economist）

crucial

sophisticated

opportunity

crisis