ZeroAvia's Val Miftakhov makes a compelling case for hydrogen aviation

Larry Dighera wrote:
On Tue, 23 Jun 2020 23:36:54 -0000, wrote:

snip

Lots of things are "feasible", but that does not mean they are
economic, practical or even legal.

It is feasible to make a motor from a birthday candle, a permanet
magnet, and a Zippo lighter flint, but you will not find such
motors powering anything other than a physics class demonstration.


Well, consider that Michael Faraday created the first electric motor
with a piece of wire dangling into a cup of mercury. That ultimately
lead directly to Tesla electric automobiles achieving astounding
~three-second zero-to-sixty-mph automobile acceleration.

Utter nonsense.

BTW, the Tesla came out dead last in over all quality.

Even the brilliant scientist may not appreciate what he has
discovered. To wit, Heinrich Hertz, after discovering and proving the
existence of radio waves, postulated,

"I do not think that the radio waves I have discovered will have
any practical application."

Yawn.

snip romanticized arm waving

snip

Fantastic as in pixie dust, flying bull frogs, unicorns,
and pots of gold at the end of rainbows.


Perhaps. Lacking any supporting objective evidence/documentation to
support your allegation, it's difficult to take it seriously. Perhaps,
you'd care to provide quantifiable facts that support your contention.

Which part?

That all the world's government's are opposed to the production
of 6Li or the utter fantasy that airports that won't install MOGAS
tanks are going to install particle accerators (also highly
regulated)?


snip

Ah, free advice; worth every penny. :-)

When you mention 'safety,' I hope you're not thinking Hindenberg
Disaster. After all, we routinely use highly flammable, if not
explosive, gasoline with reasonable safety in our current
transportation vehicles.

What part of key component to thermonuclear bombs are you failing
to understand?

When you mention 'economic,' I agree there will be significant expense
in developing a network of fueling stations, however Nikola Motor
Company intends to just that for compressed H2. See:
https://nikolamotor.com/hydrogen

Whoop de ****ing do.

There are 12 MOGAS stations less than a mile from KCCB which has
a large number of aircraft that can run on MOGAS yet KCCB does
not sell MOGAS.

snip irrelevant crap about auto fuel stations

The 'political' issues you mention may be significant for the use of
6Li, but 6Li is not crucial for the system I envision. Let's forget
about it for now.

So, how many hours would you estimate you might require to do a
serious analysis of the requirements to electrically split water into
its component molecules, and produce LH2 from that pure H3 with a
cryo-cooler, and quantify a comparison of LH2 feeding fuel-cells to
produce motive electric power, taking into consideration the reduced
weight/mass of LH2 (density: 0.07099 g/cm3) compared to kerosene
(density: 0.78?0.81 g/cm3)?

Already done, many, many, many times by many, many people.

And it is orders of magnitude more expensive than a MOGAS tank,
pump, and credit card reader.


--
Jim Pennino

On Tue, 30 Jun 2020 02:15:58 -0000, wrote:

My detailed engineering analysis can be had for $150/hr.

So, how many hours would you estimate you might require to do a
serious analysis of the requirements to electrically split water into
its component molecules, and produce LH2 from that pure H3 with a
cryo-cooler, and quantify a comparison of LH2 feeding fuel-cells to
produce motive electric power, taking into consideration the reduced
weight/mass of LH2 (density: 0.07099 g/cm3) compared to kerosene
(density: 0.78?0.81 g/cm3)?

Already done, many, many, many times by many, many people.


So, your offer was insincere, eh?

I noticed that you failed to provide even one reference to support
your allegation that the engineering had already been "many, many,
many" times.

It's become difficult to take you seriously. Oh well ...

Stay safe, and be well, my friend.

Larry Dighera wrote:
On Tue, 30 Jun 2020 02:15:58 -0000, wrote:

My detailed engineering analysis can be had for $150/hr.

So, how many hours would you estimate you might require to do a
serious analysis of the requirements to electrically split water into
its component molecules, and produce LH2 from that pure H3 with a
cryo-cooler, and quantify a comparison of LH2 feeding fuel-cells to
produce motive electric power, taking into consideration the reduced
weight/mass of LH2 (density: 0.07099 g/cm3) compared to kerosene
(density: 0.78?0.81 g/cm3)?

Already done, many, many, many times by many, many people.


So, your offer was insincere, eh?

Grow up.

I noticed that you failed to provide even one reference to support
your allegation that the engineering had already been "many, many,
many" times.

There have been billions upon billions of dollars expended on
hydrogen research by a lot of different people around the
globe.

Look it up yourself, google is your friend.

It's become difficult to take you seriously. Oh well ...

I'm not the one touting a convicted pimp as the one that has
solved the problems of hydrogen storage in his garage when
all the world's real scientists and engineers with billions
of dollars haven't.

Stay safe, and be well, my friend.

--
Jim Pennino