Tofm2, 25 days ago

@Hypx i love it

hopfgeist, 25 days ago

@Hypx Another announcement of a #vaporware project for #bamboozling investors into funding some more #greenwashing. Wonderful.
🤮
And I say that as a big fan of both renewable energy and aviation. But this won't work on so many levels.
"Traditional" #SAF aren't great, either, but still vastly more practical, and, at least mid-term, a lot greener than typical hydrogen, and compared to actual "green" hydrogen, dirt cheap.

Hypx, 25 days ago

@hopfgeist SAF is either just biofuels, which isn't green, or is a type of synfuel made from green hydrogen.

As for the plane in question, it is already flying. So unless there's more to the story, it isn't vaporware.

hopfgeist, 25 days ago

@Hypx You are telling me this is a practical aircraft that can reliably carry goods or passengers 1000 km and be turned around (i. e. refueled with hydrogen) quickly? What is flying (perhaps, see below) is a technology demonstrator.

This is like saying the Boom supersonic airliner is already flying, when in reality only a tiny technology demonstrator has been flown. Once, at low speeds and with the gear down. The Boom Overture supersonic airliner is, and remains, vaporware. It is telling that most pictures of the AMSL Aero are CGI, and I cannot find any video of a flight.

EDIT: the only picture showing "flight testing" is a still image showing a tethered hover. I'm not impressed.

Hypx, 25 days ago

@hopfgeist A tiltrotor/VTOL is not that implausible. We already have something similar in the V-22 Osprey. So at the very least, it should be possible.

SSTs must solve the sonic boom problem and will need engines designed specifically for them. This will require billions of dollars at the minimum. Boom's problem is that they might not have the resources to even get close to a flying demonstrator.

hopfgeist, 25 days ago

@Hypx I'm not saying it's impossible. But hydrogen will remain highly impractical and very expensive for a long time. Maybe forever. Sure, demonstrators will work to lure in investors. But that's where it will end.

Hypx, 25 days ago

@hopfgeist Then you are saying the same thing people said about wind, solar, batteries, etc. That they will "never be cost effective or practical."

In the long run, the price of fossil fuels will go to infinity. Meanwhile, renewable energy will never use up any resource. And if you think generally, about how you are just using wind, sunlight and water to make fuel, then it is simple enough to project that green hydrogen will cost next to nothing in the long run.