Then of course you still have the infrastructure problems of storing and
distributing liquid hydrogen long term at super low temperature.
Finally the problem of producing liquid hydrogen requiring more energy than
you get back by burning it.

Boeing and everybody else would be better off if they put the same amount
of money into recovering the 50% waste heat energy in the exhaust of the vast
majority of ICE's. No changes in the fundamental engine design or the storing
and distribution energy infrastructure required. Imagine the effect of an
immediate 20% reduction in world wide consumption of gasoline. With a
little more R&D than just the 55 year old off the shelf turbo compound tech.
they might get the eff. up to 50% over all.

BTW Boeing also gave up on the BWB as I predicted they would.

Paul Lamar

I agree with you on all counts. I just wanted to remind everyone that in a non-ice system there are potentials.
Bill Jepson

 
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