I love how aviation is always talked about so heavily but the useless cruise ship industry is never mentioned. One ship burning “bunker oil” is equivalent pollution to 5 million cars per day but I guess that’s okay?…

Former USAF flight surgeon and undergrad chemistry major here. Hydrogen has a very low energy density per volume and must be stored under immense pressure and/or low temperatures in order to have adequate energy to power anything other than very short flights. That requires very heavy, very expensive alloys. The very tiny molecule hydrogen literally seeps into metals and other materials causing “hydrogen embrittlement” and accelerating material fatigue. Extremely low temperatures make all materials less malleable and more prone to sudden, catastrophic fracture. Metals are bad, but plastics and other polymers can be even worse at low temperatures. Maintaining the necessary low temperatures adds even more weight and energy expenditure not directed to flight. Air pressure decreases with altitude magnifying the material stresses even more. The repeated ascents and descents under such immense pressure changes induce accelerated material fatigue. Temperatures also drop precipitously at altitude. H2 fuel cells and their platinum or iridium catalysts do very poorly at low temperatures. Direct combustion is more plausible, but H2 is incredibly explosive if a leak develops. Shut-off valves work well with liquid jet fuel, but much less well with gaseous H2 under immense pressure. All of the fuel lines and valves must be able to withstand all of the radical changes in pressure and temperature as well as the bulk H2 storage tanks. All of this adds immensely to weight which in turn stresses the non-fuel portions of the airframe and reduces flight efficiencies. We perform non-destructive stress damage analysis on current planes. This would needed to be performed even more sedulously on hydrogen planes. More delays and costs. Hydrogen-powered ships-yes; hydrogen-powered planes-I respectfully have my reservations. I hope they prove me wrong, but I heard none of these issues addressed to any significant degree. I am willing to be persuaded. Best wishes.

I'd like to see a similar report for the future of shipping and sea transport.

4:25 Great idea, show a random graph while talking about "airbus looking into hydrogen over time", I guess they were -25% looking into it in October 2022, whatever that means...

I'd like to see a documentary like this that includes some explanation of fuel storage and transportation 'why' and 'how' -- including descriptions of storage container weight, materials and construction; compression and cooling equipment design and costs (up-front capital, O&M, energy (kWh) required to run it), and; transport and storage compression pressures -- in order to help viewers understand why a fuel with, "...the highest energy per mass of any fuel..." has to be compressed to 13,000 psi or cryogenically cooled before it's useful in an aircraft, car or truck. This would help viewers appreciate what it actually takes to achieve and sustain 13,000 psi or minus 425F, and the challenges created by such pressures and temperatures during transporting and storage as compared to traditional liquid fuels.

That is not a ATR-72 !! Thats a dash 8 !!

While H2 is energy dense by mass, by volume it leaves much to be desired. H2 also needs to be either cryogenically frozen or highly pressurized in storage which drags on its round trip efficiency. H2 could still play a big role in green ammonia production, which has greater energy density by volume without the previously mentioned problems of h2. The holy grail in my view would be developing a scalable and cheap direct ammonia fuel cell (vs having to crack the ammonia back to H2, which again, drags on efficiency).

Well CNBC, you pick a bunch of people who happens to be working on hydrogen fueled engines to advocate for hydrogen powered airplanes and give an impression that there really is no other way to get to net zero emission in this industry...

8:04 that’s a Dash 8 not an ATR

In a way, even hydrocarbon is some kind of battery. Plants absorb the energy from the sun and convert it to carbohydrate as energy storage. When the plant died they got buried deep overtime. The fibrous part was petrified, and the carbohydrate was refined by pressure and heat into hydrocarbon.

No matter if the medium is battery, hydrogen, or whatever; it is only a medium. We need a massive increase in non-fossil electricity capacity to power all of these vehicles, and it needs to start now because it is going to take a while to get there. This needs to be addressed.

Aviation is where hydrogen makes the most sense to start a hydrogen economy. Next would be replacing natural gas with hydrogen. Then hydrogen for trains, busses, trucks, and finally passenger cars. Hydrogen is a great way of storing and transmitting energy. There are however a number of technical, safety, and economic hurdles to overcome. Hydrogen can be produced from water and electricity. Renewable, nuclear, or even fossil fuels. Thus hydrogen could ultimately be not only the cleanest fuel, but also the cheapest fuel.

Electric Trams are probably the ultimate form of green transport as the batteries are not carried on the vehicle itself but soo much focus is being placed on electric cars 🤷

Hydrogen powered aircraft was investigated back in the 1970s. It wasn't economical back then for large aircraft and I doubt it will now. One of the drawbacks was storing large quantities of hydrogen at an airport.

Brilliant Coverage in Hydrogen usage in aircraft! Thank you for sharing this important topic in in aviation fuel alternatives. Greetings from Madang, Papua New Guinea!

HYDROGEN being the smallest atom in the universe is EXTREMELY hard to store because it just leaks from containers, that and the fact that hydrogen is also extremely flammable which means every leak has the potential for disaster.

cnbc contents are getting better by the day

The source of the explanation as tho why hydrogen will beat batteries for aviation seems to be “trust me bro”

One thing is true, Hydrogen is potentially the best option. But thats when you just see in context on a fuel to engine. But when you see supply chain, whole big cargo planes , Hydrogen generation and transportation Then you realize its still in infancy stage.

Hydrogen isn’t just the lightest fuel, it’s the lightest element. There is no type of atom weighs less than an Hydrogen atom.

Didn't we try flying vehicles filled with hydrogen before? Like, 86 years ago? I seem to remember it didn't go so well...

Hurrah! you have finally won the race

I like the idea of a combination of two fuels: Catalytically derived, cellulosic or algae biobutanol for landings and takeoffs; Then a switchover to ammonia (NH⁴) for cruising. Might be the easy & quick low CO² fuel path. I think speed & 'anti-absolecence' is important to avoid the increase in CO² from the manufacturing of new aircraft right away.

None of the above will achieve the long haul capability that's on the market now.

CNBC does top-notch documentaries, interesting and well researched. Ammonia is really the key here...too bad there was no mention of it (though this doc was focused on H2)...NH3 is a better H2 carrier than liquid hydrogen....about twice as much and its in liquid form can be held at a much lower pressure about 10 bar (while H2 gas is at 700 bar)...that's the real future imo. Ofc NH3 is a toxic substance, so we'd need to handle it better than we do gasoline (as it can cause blindness), but for decarbonizing, it's the pinnacle for an alternate energy source.

Những phương tiện hàng không tốc độ cao rất cần thiết cho nhu cầu thu hoạch kiến thức trí tuệ ngoài không gian hay lắm, cảm ơn video chia sẻ của bạn chúc bạn sức khỏe và hạnh phúc.

What about the high cost of platinum in the use of hydrogen? Flammability? Compressibility and leakage? High cost of making hydrogen? Give it up.

OK, I'm an engineer and that will not work in the next decades, AT ALL. You need an insane amount of fuel cells to get enough power and that WILL BE EXTREMELY expensive. That will quadrupple sixtuple the ticket costs, when planes get a multiple price increase. There is currently no H2 industrie that delivers H2 in large quantities and the one that exist is even more expensive than gasoline and oil, which is already too expensive.

Airline hydrogen technology is just blowing up !

I hate when media tries to make it hydrogen vs battery when they are completing each other.

Can’t they target the private jet industry as a starting point? Private jets carbon footprints are much heavier per person than a commercial jet. It also gives them the opportunity to create more evidence and experiences using the new fuel type so it gains traction and becomes more standardized. Just a thought

As a child in the fifth grade in the 1960s I learned from a science textbook how to make hydrogen and oxygen from water using electrolysis. Since then I have always wondered why not just connect a solar cell or windmill generator to a water electrolysis device and use wind or solar energy to make hydrogen. I guess there are technical reasons why this won't work. This video mentions that storing hydrogen as a gas takes a lot of room and storing as a liquid requires super cooling equipment. Hopefully scientists will come up with an answer to these issues and soon.

1937 - Hindenburg incident was attributed to atmospheric electrical discharge and a small leak of H

Hydrogen molecules are so small. They are prone to leaking out of hoses, pipes and connectors and storage tanks.

Why is it logical to consume cheap electricity to produce hydrogen and use more energy to change it to a liquid and then convert it back to a gas to burn it in an inefficient engine to produce electricity?

Cool video. Unfortunately, I suspect hydrogen will take longer to supplant the current air travel logistics than declared, but it will eventually happen. In the nearer term though, I suspect some mix of biofuels and carbon neutral synthetic efuels will be what initially decarbonizes air travel before hydrogen tech is able to become a superior technology. To get the ball rolling I suggest legislating that private jets be LEGALLY REQUIRED to use carbon neutral fuels, be they biofuels, efuels, green hydrogen, direct electricity, or something else. This will help stimulate the market and development to make these technologies become more available at larger scale by having those who CAN pay the premium, do so in the early days.

We were onboard an H2O boat not long ago, interesting stuff, exciting.

Boeing and Airbus should use the new propeller types to be even more efficient! ✌️

Planes can only be powered by ticket sales

Quels sont les avantages de ce moteur par rapport aux autres moteurs à essence existants : peut-il être plus rapide (plus de 1 500 kilomètres par heure), avoir une autonomie plus longue, être plus doux et plus silencieux ? Puis-je transporter un tonnage plus lourd (par exemple, deux fois le tonnage du Beluga XL d’Airbus) ? Les batteries peuvent-elles atteindre une puissance de 20 à 50 mégawatts tout en conservant des dimensions appropriées ? Pourrait-il être plus automatisé/plus facile à entretenir et à gérer ? Existe-t-il une capacité de production en volume dans la région européenne ou dans la région de l’Atlantique Nord ? Nous espérons que les ingénieurs et les équipes auront des objectifs clairs et éviteront de concevoir des produits ayant un positionnement difficile sur le marché et un développement lent.

Hydrogen is five times lighter than gasoline and has twice the energy per kg. The hydrogen on the plane will need a tank five times bigger to do the same thing as kerosene

You can't store hydrogen fuel in the wings unlike conventional fuels which can, which is why it's still not a great fuel for airplanes. However, hydrogen is a great fuel for hybrid airships

create a hydrogen factory on space using solar energy and space mining, pollution ,lack of resources ,war ,personal interest GONE FOR GOOD ,there's is abundance of everything we need in space, we just have to design a space factory XD

This is great I was wondering when something like this would happen

the problem with Hydrogen is the cost in energy and other resources in producing pure hydrogen, storing it, distributing it, so all the advantages of hydrogen quickly evaporate when you add up all the cost. We need research on reducing the cost of all of this before we can make good use of hydrogen.

Hydrogen isn’t perfect but it’s a better option than electric

Hydrogen up in the air! That will certainly light up the sky!

Did they mention that currently commercial hydrogen comes from fossil fuels? It could be made by electrolysis, but it's more expensive that way. But yes, continue with the experimentation. Modern avgas, used for piston airplane engines, even has lead in it.

The actual solution to this problem is rails

The main issue is the production of hydrogen. The conventional method of hydrogen production involving the use of methane and fossil fuels ends up producing CO2 as a byproduct. The alternative method of using electrolysis of water is very expensive and a net energy sinking process because the amount to energy required to split water is higher than the amount of energy released in burning hydrogen if the efficiency of the entire process is taken into account.

The aircraft stated at 8:05 tested with Hydrogen its not an ATR72, ATR72 has 70 seats not 50-60 , airplane shown is Dash 8 Q300

Why Electric-Powered Planes Will Beat Hydrogen Planes is the more accurate statement.

seems like Elon Musk was pretty dumb when he dismissed hydrogen for energy storages

Commercial aviation is maybe the only one industry people shouldn't mind. Btw, private emissions aren't mentioned on this, they pollute more per person than commercial ones. Will they be regulated as well? No... ? Yeah, as I thought...

Innovations like these are not possible on the grand scale because we rely on a piece of paper to do what's right in the world.

Interesting 💚

Doesn’t hydrogen easily catch fire?

This media can't survive without graph statistics...😅

So many comments referring to the airship Hindenburg! Which wasn't a plane, but an airship. Which didn't use hydrogen as a fuel, stored in robust tanks, but as a liftig gas in giant "balloons". It's true, hydrogen is an inconvenient energy carrier and requires high safety efforts. Nevertheless, the comparison of hydrogen powered planes with airships with hydrogen as a liftig gas is nonsense!

I wonder if the hydrogen powered airline industry is going to be cheaper in the long run

I have stopped guessing what will make it and how fast. We always get it wrong anyway.

It takes an enormous amount of electricity to create hydrogen. Doh!!

Hydrogen powered vehicles, aircraft or space rockets require that engineers succeed in completely sealing hydrogen containers so that the tiny molecules cannot escape. This makes for extremely complicated valve technology, which to date has only been partially successful.

The problem is that hydrogen fuel cells is an interm technology. By the time it could reach maturity it will be outpaced by competing technologies like solar paired with battery packs. This is a completly different use case but there's a reason the military already has uav drones that are solar powered and not hydrogen. They can essentially fly continuously. If hydrogen was to successfully disrupt the aviation and other industries it would of had to be implemented 15 years ago where it would of drastically outcompeted any other avaliable technology and been able to gain footing and develop the needed infostructure.

Cause air flight and hydrogen have had such a great relationship in the past.

Hydrogen fuels used in heavy weight duty transportation like Bus 🚌 Lorry 🚚 Van 🚛 Bio fules can be used in Aircraft Transportation.

It must be green hydrogen!

Can companies make the whole experience more comfortable....flying used to be so memorable... NOW EVERYTHING FEELS LIKE RIDING A PUBLIC BUS .

If Airbus makes hydrogen powered planes really gives a new meaning to "Air Bus"

You cannot overcome Hydrogen's volume problem.. There is absolutely no beating physics..

We had a Hydrogen powered airplane in the past. It's called the Hindenburg. The only difference now is the tank pressure is 10,000 PSI or more. Imagine the damage it could unleash.

I hope shipping goes Hydrogen even sooner than aircrafts.

Also, nobody seems to be mentioning the enourmous danger of carrying huge battery packs in an airplane. we have seen battery cars combust in flames instantly but you have never seen a Toyota Mirai combust in flames out of nowhere. That's because its hydrogen tanks are reinforced in a matter that it can stop a small bullet, something not even gas tanks can do.

Hydrogen powered air travel. Oh the humanity!

believe it or not, Hydrogen powered aircraft been around since 1957 they had the Martin B-57B of the NACA, and Russian had a hydrogen plane in 1988 which was a Tu-155

“flying on hydrogen will be more expensive than jet fuel, unless there are carbon taxes that increase the price of flying with current jet fuel” this sounds like we should stick with jet fuel unless we stack the deck.

Hey @CNBC that aircraft is not an ATR it's a dash8-300 N330EN flew for piedmont airlines . this has been an aviation employee fact check

There is no "extra electricity". Any power diverted to manufacture "green hydrogen" means less power to offset power generation by burning fuels. As converting energy into a chemical fuel to be later converted back into energy elsewhere (especially hydrogen) represents major loss of efficiency it only serves to increase net CO2 emissions over if power had been directly used by the energy grid. Also, before all this money gets dumped into hydrogen as an energy carrier I'd like to see estimates of how much hydrogen leaks into the environment during its production, transportation, storage, and conversion. Leaked hydrogen quickly rises into the high atmosphere and depletes the Ozone layer and creates the greenhouse gas water vapor in the high and normally dry layers of the atmosphere.

Historically, hydrogen and aircraft haven't mixed well.

Time to say goodbye for tesla 😂

Good idea! You travel in, but not me !

The basic equation is that to move people quickly by air, a lot of energy is required. The amount of long distance travel has increased phenomenally since 1960. Before that most people didn't fly and rarely went on long trips. What does this all support? The engineers may be able to make hydrogen aircraft practical and economical

What great video editing.... They even cut out match end and show one last point for the losing team..... 🤦🏻‍♂️🤦🏻‍♂️🤦🏻‍♂️ I won't even mention calling the set winner while the point is going on ....

Not discussed is that burning hydrogen in a conventional turbine engine requires oxygen. To save weight, that oxygen will come from ambiant air which contains nitrogen. The result of that combustion will also generate not desirable NOx

This guy really doing an interview with his A20s... on the ground.

Imagine the release of gas was sent through a generator that reduced its "braking" capacity relative to the pressure left 😂😊

ground hydrocarbons is sustainable in the sense that it is no problem to burn it. but we do need cheap new energy too.

They would need a gyro that can control the “fuel tank” whenever the plane pitches/rolls adding to the weight of the plane even more

Let’s first decarbonise the easy to decarbonise uses of Hydrogen. Ammonia production for fertilisers would be a good start.

If aircraft are responsible for ONLY 2.5% of global emissions, then they're not the problem; they're the solution, especially when considering that 4.5 billion passengers (out of a 7 billion world population) travel by aircraft each year.

AMAZING !!!! 🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏

It can't replace typical jet fuel but it will help lessening carbon emission from the industry as a whole. And that can be considered a win.

It would be awesome if hydrogen somehow could work. Working around jets is hard when you have to breathe in all their unhealthy exhaust, which there’s a lot of

You don't really need hydrogen to reach 0 CO2 emission goal. You can just produce a conventional aviation fuel from plant sources. For example corn is used to produce fuel in Brazil. Whatever CO2 produced by such fuels will be re-absorbed by the plants to produce oxygen. So overall the total net emission of CO2 would be 0. If there is not enough land for planting, they can use sea and using algae, the same goal is achieved. This is much less costly and can re-use the existing airplanes and technology.

Canada is currently building infrastructure for electric-hydrogen from windmills and solar panels.☮️🇨🇦

The more i watch these kinds of videos the more i realise how superior traditional fuels are.

Battery technology is evolving at breakneck pace. Battery density will be more than adequate for use on airplanes in the coming 10-20 years.

I wonder if there will be hybrids fuel cell and batteries, or energy beamed from space in the future.

Problem is us the people flying everywhere. If we stop then the problem stops. Don't blame the air companies, blame human proletarians flying to Benidorm for a holiday It is us the people who need to renounce flying, not expect the companies to solve it

At the 8:30 mark you said atr-72, that is either a bombardier q300 or q400…need to check your sources