----- Original Message -----
From: "WILTON" <wilt...@nc.rr.com>
To: "Peter Frederick" <psf...@earthlink.net>
Sent: Wednesday, October 15, 2014 9:05 PM
Subject: Re: [MBZ] OT - More B-52 stuff
J-57's (12k lbs. to nearly 13k+ lbs. thrust plus water-alcohol injection
for more thrust on take off) were on B-52A through B-52G; TF-33's, a
by-pass engine, (17k lbs thrust - no water injection) has been on B-52H's
since they were built in '61-'62.
Wilton
----- Original Message -----
From: "Peter Frederick" <psf...@earthlink.net>
To: "WILTON" <wilt...@nc.rr.com>; "Mercedes Discussion List"
<mercedes@okiebenz.com>
Sent: Wednesday, October 15, 2014 7:59 PM
Subject: Re: [MBZ] OT - More B-52 stuff
Since the J-75 or whatever it was was slapped on as "what was out there"
in the first place, a re-engine is at least 40 years overdue. There is
absolutely no excuse for not putting a bypass engine on there instead of
a straight turbojet. The JT-7D was literally a J-75 with a fan stuck on
the front of the compressor shaft and a new housing for it, increased
static thrust at least 20%, and that was in 1960.
After all, the AF FINALLY put CFM-56 engines on the KC-135 -- can't be
in too much of a hurry, after all, gotta wait until the commerical
aviation system quits using it, eh? The CFM-56 has been available since
what, the early 80's? All the hard work was done already in that case
as the B737 wing is very close in design to the KC135 (it's the wing on
the 707 if I remember correctly). Almost a simple as putting the other
engine on.
I'd guess at least 30% less fuel, probably 35%, and equally higher all
up weight if the airframe can handle it (probably not). Shorter
runways, much less fuel, vastly greater low speed handling, 30% more
range, why has this taken so long?
However, when my brother worked at GE engines, every single engineering
improvement was rejected by the AF. Every one, even if it would make
the engines last twice as long or burn much less fuel. Some BS about
supply chain confusion and not wanting multiple versions in service,
etc.
Seems to me at the rate they burn out, it should not take long to
replace them all anyway.
Peter
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