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[MacDoc]

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Have a thread for interesting science news on another forum and thought why not here as did not really have a spot for this.

The dark horse gallops forward

H3 debuts all-in-one hydrogen powertrain pods for long-range flight

By Loz Blain
December 14, 2022

H3 debuts all-in-one hydrogen powertrain pods for long-range flight

France's H3 Dynamics has presented a self-contained hydrogen propulsion pod for drones and airplanes, delivering huge range and endurance figures without heavy batteries. It mirrors the approach Airbus and others are taking with commercial airliners.

newatlas.com

 

[GreyGhost]

Have a thread for interesting science news on another forum and thought why not here as did not really have a spot for this.

The dark horse gallops forward

H3 debuts all-in-one hydrogen powertrain pods for long-range flight

France's H3 Dynamics has presented a self-contained hydrogen propulsion pod for drones and airplanes, delivering huge range and endurance figures without heavy batteries. It mirrors the approach Airbus and others are taking with commercial airliners.

newatlas.com

Hydrogen will always be stupid as a fuel. It is expensive and takes far more energy to get in a bottle than you can get out of the bottle. There may be small edge cases for it but as a commercially viable idea it's dead in the water. You cant beat physics. Now, the biggest upside to hydrogen is extracting government subsidies. That may make it commercially viable as a research project (ie the research is profitable but the resultant vehicle never will be).

 

[nobbie48]

Hydrogen will always be stupid as a fuel. It is expensive and takes far more energy to get in a bottle than you can get out of the bottle. There may be small edge cases for it but as a commercially viable idea it's dead in the water. You cant beat physics. Now, the biggest upside to hydrogen is extracting government subsidies. That may make it commercially viable as a research project (ie the research is profitable but the resultant vehicle never will be).

What's worse hydrogen or alcohol?

My limited understanding is that alcohol is only viable if coupled with a feed lot for the spent grain.

Is there a process for making needed oxygen where hydrogen is a waste product?

Research into alternate anything is good but unfortunately too many of the doomed schemes become causes celebre and we end up with billion dollar perpetual motion machines.

I couldn't bother reading the whole article so may have missed something but a guy was talking about extending the range on his Tesla by putting in an alternator. The whole bloody car is an alternator.

 

[GreyGhost]

I couldn't bother reading the whole article so may have missed something but a guy was talking about extending the range on his Tesla by putting in an alternator. The whole bloody car is an alternator.

That guy basically converted his tesla into a volt. Constant speed generator charging the battery. Slightly silly (other than for the clicks) as it is far more cost-effective and efficient to use a much smaller battery in the system.

 

[Baggsy]

 

[nobbie48]

That guy basically converted his tesla into a volt. Constant speed generator charging the battery. Slightly silly (other than for the clicks) as it is far more cost-effective and efficient to use a much smaller battery in the system.

I was equating it to the guy that put a propeller on the front of his bicycle. It drove an alternator that drove a small electric motor. Might have worked downhill.

 

[TwistedKestrel]

Looks halfway to the arsenal bird from AC7

 

[MacDoc]

Hydrogen will always be stupid as a fuel. It is expensive and takes far more energy to get in a bottle than you can get out of the bottle.

That does not matter when it is energy otherwise going to waste - solar, wind and nuclear are not throttable and putting it to use in a portable fuel makes all sorts of sense....
Even as a grid storage it made sense back in 2015

Hydrogen or batteries for grid storage? A net energy analysis

Energy storage is a promising approach to address the challenge of intermittent generation from renewables on the electric grid. In this work, we evaluate energy storage with a regenerative hydrogen fuel cell (RHFC) using net energy analysis. We examine the most widely installed RHFC...

pubs.rsc.org

Conclusion

Energy storage in hydrogen is a technically feasible option for grid-scale storage, and is already in pilot demonstrations

And that is outside any use in transport and in particular aviation.
Advances in the storage and efficiency of conversion in hydrogen continue.

Hydrogen production: Is it better to go green or blue … or green and blue?

Hydrogen is vital in the energy transition. But the choice between blue, fossil fuel-based hydrogen and the green, renewable version is polarizing advocates.

spectra.mhi.com

Hydrogen breakthroughs tipped to speed up energy transition

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