NoLifeLine
Topic Author
Posts: 13
Joined: Tue Jan 15, 2019 11:40 am

NASA Funding Development of Hydrogen Powered All Electric Passenger Planes

Thu May 16, 2019 10:04 am

Researchers at the University of Illinois are working on an all-electric aircraft project funded by NASA.

The aviation industry, only born a little over a century ago, is on the brink of an enormous change. While electric cars and the electric scooters are already dotting city streets, planes are preparing to join the emissions-free club.

Experts are drawing up plans for hydrogen-powered passenger planes in an attempt to clean up aircraft emissions. The engineers have been given three years and $6million (£4.6million) to create the tech which could revolutionise the aviation industry.

By using cooled, condensed liquid hydrogen instead of hydrogen gas, clean power can be generated without needing heavy pressurised storage tanks.

Here's the full article

Image
 
aklrno
Posts: 1470
Joined: Sat Dec 04, 2010 11:18 pm

Re: NASA Funding Development of Hydrogen Powered All Electric Passenger Planes

Mon May 20, 2019 9:42 pm

NoLifeLine wrote:
Researchers at the University of Illinois are working on an all-electric aircraft project funded by NASA.

The aviation industry, only born a little over a century ago, is on the brink of an enormous change. While electric cars and the electric scooters are already dotting city streets, planes are preparing to join the emissions-free club.

Experts are drawing up plans for hydrogen-powered passenger planes in an attempt to clean up aircraft emissions. The engineers have been given three years and $6million (£4.6million) to create the tech which could revolutionise the aviation industry.

By using cooled, condensed liquid hydrogen instead of hydrogen gas, clean power can be generated without needing heavy pressurised storage tanks.

Here's the full article

Image

I get upset when people talk about "emissions free" hydrogen. Yes, at the point the hydrogen is burned in combustion engine or fuel cell to water there are no emissions, but hydrogen doesn't grow on trees. The process of converting water or any other feedstock to H2 takes more energy than burning the H2 will generate. Thats's the 2nd law of thermodynamics at work. There are emissions, just not by the airplane, but at the H2 generation plant. I suppose you could have a wind energy or solar plant providing the electricity to make the liquid H2 but it would be more efficient to just use that electricity to power the grid. Turning H2 into LH2 takes a lot of energy.
 
frmrCapCadet
Posts: 2811
Joined: Thu May 29, 2008 8:24 pm

Re: NASA Funding Development of Hydrogen Powered All Electric Passenger Planes

Tue May 21, 2019 1:38 pm

One of the problems with both solar and wind is dealing with unneeded production. This even happens with hydro power. If, and it is a big if, production of hydrogen could be produced, stored, and then transported. Then, what to do with hydrogen. My suspicion is that such hydrogen will have an economical niche. Most likely it will be stored locally and used for production of electricity or some sort of industrial production. Fertilizer? Transported for aviation?
Buffet: the airline business...has eaten up capital...like..no other (business)
 
mxaxai
Posts: 968
Joined: Sat Jun 18, 2016 7:29 am

Re: NASA Funding Development of Hydrogen Powered All Electric Passenger Planes

Tue May 21, 2019 3:18 pm

frmrCapCadet wrote:
One of the problems with both solar and wind is dealing with unneeded production. This even happens with hydro power. If, and it is a big if, production of hydrogen could be produced, stored, and then transported. Then, what to do with hydrogen. My suspicion is that such hydrogen will have an economical niche. Most likely it will be stored locally and used for production of electricity or some sort of industrial production. Fertilizer? Transported for aviation?

Hydrogen is a PITA to store. For example, you can't generate tons of hydrogen in summer from solar power and expect it to still be available half a year later, in winter. It's also not easy to transport in pipelines. It could work as energy storage for a week or even a month but not really more.

For aircraft, the low energy density remains a key problem that won't be solved unless the efficiency increases drastically. Even in liquid form. Look how large LH2 tanks are for rockets, compared to kerosene. Then you have to consider the energy expended to liquify the hydrogen, and the required insulation to keep it cool. You would need to avoid ice buildup on the tanks' outer side.

Honestly, the only useful hydrogen applications in aviation are scramjets and rockets, due to the excellent specific energy and the fast combustion. This coincidentally matches the topic of this subforum, otherwise the article would've been a much better fit in TechOps.
 
tapairbus370
Posts: 198
Joined: Fri May 09, 2008 1:37 pm

Re: NASA Funding Development of Hydrogen Powered All Electric Passenger Planes

Fri May 24, 2019 10:17 pm

I hpe this thread don´t get locked and we will be able to post those "amazing developments in technology" that they will achieve.

Or maybe I will eat my words...that would be awsome.

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