What's more, how do you insulate it? That's potentially an even bigger
showstopper. You can't just let external surfaces ice up and I think we
established back in a previous hydrogen thread that ultimately plumbing and
tankage insulation operating in an atmosphere for extended durations needs to
cope with vac-like pressure differentials requiring stout (read: heavy)
jacketing?
Troy
From: arocket-bounce@xxxxxxxxxxxxx [mailto:arocket-bounce@xxxxxxxxxxxxx] On ;
Behalf Of Henry Vanderbilt
Sent: Monday, 6 April 2020 12:25 PM
To: arocket@xxxxxxxxxxxxx
Subject: [AR] Re: P&W GTF
Far more expensive fuel-per-unit-energy, and higher cruise drag from the much
larger cross-section of the LH2 tanks? Yeah, I think we both know how that
analysis would turn out.
The GTF is a prime example of how the efficiency gains in conventional
airliners are incremental at this point. I think the real gains are to be had
(on longer routes at least) by going around all that atmosphere rather than
pushing through it. Now that would be an interesting trade study, and project
to work on.
Henry
On 4/5/2020 7:17 PM, Michael Clive wrote:
The important question is: Would it be cheaper to operate an A380 sized vehicle
for a 737 number of passengers, running hydrogen, than a 737 running JET-A?
I am sure that there are position papers, PDFs, analyses all over the place,
and since that I have not heard of a significant investment in developing these
technologies, I am sure the trade doesn't work out. But if it did, I would love
to work on that program.
On Sun, Apr 5, 2020 at 7:03 PM Henry Vanderbilt <hvanderbilt@xxxxxxxxxxxxxx
<mailto:hvanderbilt@xxxxxxxxxxxxxx> > wrote:
Oh, you could do it at the current A380 size. You'd just have to convert most
of the fuselage to LH2 storage. You'd give up most of the current payload, of
course. And (not having done the math) possibly also a good bit of the current
range. But the dimensions could be kept the same...
Henry
On 4/4/2020 7:45 PM, Anthony Cesaroni wrote:
That would be a very large airplane dwarfing it’s existing geometery.
Anthony J. Cesaroni
President/CEO
Cesaroni Technology/Cesaroni Aerospace
<http://www.cesaronitech.com/> http://www.cesaronitech.com/
(941) 360-3100 x101 Sarasota
(905) 887-2370 x222 Toronto
From: arocket-bounce@xxxxxxxxxxxxx <mailto:arocket-bounce@xxxxxxxxxxxxx>
<mailto:arocket-bounce@xxxxxxxxxxxxx> <arocket-bounce@xxxxxxxxxxxxx> On Behalf
Of Michael Clive
Sent: Saturday, April 4, 2020 10:42 PM
To: arocket@xxxxxxxxxxxxx <mailto:arocket@xxxxxxxxxxxxx>
Subject: [AR] Re: P&W GTF
You know Craig, I do find myself smiling and nodding, thinking of how cool it
would be to fly on a A380 with liquid hydrogen powered turbines. I am actually
looking forward to that day!
On Sat, Apr 4, 2020 at 5:51 PM Craig Fink <webegood@xxxxxxxxx
<mailto:webegood@xxxxxxxxx> > wrote:
Yeah, Seventy Years of optimization, a thing of beauty. Built to Cruise...
But, more to come, When they go green and start feeding these beasts with
Liquid Hydrogen. Cryogenically Intercoolered Stator Blades allowing for much
higher compression, 9000 psi Hydrogen "Rocket" Fuel Injectors and Afterburners
capable of flying from Takeoff to Mach 10 in under 10 minutes. On it's way to
Orbit, built for One purpose and One Purpose Only. To Accelerate!!!
Of course, we'll see many subsonic versions along the way.
On Fri, Apr 3, 2020 at 6:25 PM Anthony Cesaroni <anthony@xxxxxxxxxxx
<mailto:anthony@xxxxxxxxxxx> > wrote:
So cool, so expensive. Almost anything turbo seems to fit that description
sadly. The link may wrap.
https://pwgtf.com/?utm_campaign=gtfnocomparison ;
<https://pwgtf.com/?utm_campaign=gtfnocomparison&utm_source=aviationweek&utm_medium=enews&utm_term=awthisweek_april3-10&utm_content=300x250>
&utm_source=aviationweek&utm_medium=enews&utm_term=awthisweek_april3-10&utm_content=300x250
Anthony J. Cesaroni
President/CEO
Cesaroni Technology/Cesaroni Aerospace
<http://www.cesaronitech.com/> http://www.cesaronitech.com/
(941) 360-3100 x101 Sarasota
(905) 887-2370 x222 Toronto
--
Craig Fink
WeBeGood@xxxxxxxxx <mailto:WeBeGood@xxxxxxxxx>
