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Legacy airframe and modern technology CONECT (B-52 Still has 8 Engines?)
USAF ^ | July 26, 2013 | Airman 1st Class Joseph Raatz

Posted on 05/27/2014 9:08:32 AM PDT by ImJustAnotherOkie

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To: ImJustAnotherOkie

Believe it or not, it’s a matter of cost. Boeing offered to re-wing and re-engine the B-52 fleet a few years, but the Air Force decied it would be cheaper (long term) to keep the Buff in its original, eight-engine configuration.

I was told the cost for the program would be $2-3 billion. However, there are still a lot of TF-33 engines on Buffs and C-141s in the boneyard. The Air Force has been canibalizing those for years, and it’s one reason they haven’t looked at the re-engine option very seriously.

However, the supply of engines/parts at the boneyard is not unlimited, and there would be tremendous savings in going to a four-engine model with better fuel efficiency and greater thrust.


21 posted on 05/27/2014 10:16:29 AM PDT by ExNewsExSpook
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To: F15Eagle
Of course that’s a lot of rewiring, systems, etc.

My younger brother worked in those babies in the 1970s. They were already full of new wire with the original wire harnesses still in place. Pulling the original ones out would be too expensive. Not only that, there are many "stop drills" and pop-riveted plates to repair air frame cracks. This makes the craft a great deal heavier than it is supposed to be.

For the life of me, why don't they build new ones using upgraded designs to replace the dangerously aged hulks? It is a wonderful design that should be replicated in newly built aircraft.

22 posted on 05/27/2014 10:17:48 AM PDT by GingisK
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To: mad_as_he$$

Bwahahaha ... I can see it now, landing in the Steppes to gather enough Peat to get home ...


23 posted on 05/27/2014 10:20:29 AM PDT by MHGinTN
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Comment #24 Removed by Moderator

To: JimRed

Had one of these fly over me “lo&slo” souht of Gilette, WY in Wyoming in the early 80s. They were dropping flour sacks from ~500 feet.

Since I was the only car on the road within 200 miles on a Sunday afternoon, I suppose they wanted to have some fun and “give me the willies!”.

They did.


25 posted on 05/27/2014 10:46:15 AM PDT by Cletus.D.Yokel (Catastrophic Anthropogenic Climate Alterations - The Acronym explains the science.)
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To: ImJustAnotherOkie

If you look at the C5 Re-engining, it was pretty expensive and they’re only doing about half of the C5B fleet as a result.

Here’s a pretty good article that describes in detail the hurdles that are faced in upgrading aircraft built as recently as the ‘80s. One can only imagine the difficulties that would face the B52s.

http://www.defenseindustrydaily.com/saving-the-galaxy-the-c-5-amprerp-program-03938/


26 posted on 05/27/2014 11:00:09 AM PDT by SZonian (Throwing our allegiances to political parties in the long run gave away our liberty.)
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To: NormsRevenge

>>> A military pilot called for a priority landing because his single-engine jet fighter was running “a bit peaked.” Air Traffic Control told the fighter pilot that he was number two, behind a B-52 that had one engine shut down. “Ah,” the fighter pilot remarked, “The dreaded seven-engine approach.” <<<


27 posted on 05/27/2014 11:00:46 AM PDT by AFreeBird
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To: SZonian

Have Spike get the PowerBlock boys to launch a new series call ‘C5 Overhaul’.

They could weld on some 787 engines with controls, and have it out the door in 6 months.

That guy who does Extreme Off Road can fabricate about anything except a good haircut. At least it seems that way.


28 posted on 05/27/2014 11:17:09 AM PDT by ImJustAnotherOkie (zerogottago)
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To: JimRed

Big Ugly Fat Fellow, right? Kinda like Rear Echelon Mortar Fixers?


29 posted on 05/27/2014 11:22:04 AM PDT by Bob
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To: ImJustAnotherOkie

Used to be a show called Junkyard Wars or some such...the teams had to build something out of stuff found in the yard...pretty damned ingenious in some cases.

I’ve seen that aircraft just aren’t as forgiving of such “ingenuity” at times...the Law of Physics and all that.


30 posted on 05/27/2014 11:24:05 AM PDT by SZonian (Throwing our allegiances to political parties in the long run gave away our liberty.)
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To: SZonian

As Obama says, win some loose some...


31 posted on 05/27/2014 11:33:44 AM PDT by ImJustAnotherOkie (zerogottago)
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To: matthew fuller

Can’t we re-design this old ship? Use Turoprops like the Russian Bear? We need this sort of ship so why not build a B-54 or a B-59?


32 posted on 05/27/2014 11:42:55 AM PDT by Forward the Light Brigade (Into the Jaws of H*ll)
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To: ImJustAnotherOkie
It has to do with the design loads of the airframe. Changing the load at the wing attachment points, causes the structure to behave differently than it was designed for.

The two engine per pylon weighs X much, produces Y amount of thrust, D amount of drag, L amount of lift (yes the nacelle shape produces lift), M amount of yaw moment, and L amount of pitch moment. Any change needs to stay in an envelope around each of those quantities.

Any that fall outside that envelope and the structure reacts very differently. i.e. The wing can fatigue faster or flutter (BAD) can result.

On top of that, the cost of changing out the H engines would be more than the airframes are worth according to the last time re-engining was looked at... and we need those bombers.

So we're stuck with them as they are for now.

That help?

33 posted on 05/27/2014 11:49:03 AM PDT by Freeport (The proper application of high explosives will remove all obstacles.)
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To: Bob

Feller, yeah...that’s it...feller!


34 posted on 05/27/2014 11:49:17 AM PDT by JimRed (Excise the cancer before it kills us; feed & water the Tree of Liberty! TERM LIMITS NOW & FOREVER!)
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To: ImJustAnotherOkie

Valerie jarret keeps 8 engins because two of them are homosexual engines....


35 posted on 05/27/2014 11:50:52 AM PDT by longtermmemmory (VOTE! http://www.senate.gov and http://www.house.gov)
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To: Cletus.D.Yokel

I had a couple of A-10’s pretending (I assume) that I was an enemy vehicle on a back road near McGuire AFB in South Jersey back around then. Lined me up, popped up from the tree line about two miles ahead and made their runs. Neat to watch, and fun-scary.


36 posted on 05/27/2014 11:54:30 AM PDT by JimRed (Excise the cancer before it kills us; feed & water the Tree of Liberty! TERM LIMITS NOW & FOREVER!)
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To: mad_as_he$$

Yes, they had to phase out the coal burners when they found out people were aborting all the midget babies that used to be squeezed into the wings to stoke the engines.


37 posted on 05/27/2014 12:06:30 PM PDT by libstripper
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To: JimRed

Now, thinking about that same thing as if you were a red-diaper liberal who hates the military.

Given the above description, you would have probably had you Senator on speed dial!


38 posted on 05/27/2014 12:11:22 PM PDT by Cletus.D.Yokel (Catastrophic Anthropogenic Climate Alterations - The Acronym explains the science.)
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To: mad_as_he$$
Still it is better than the original BUFF’s that were coal powered.


39 posted on 05/27/2014 12:17:45 PM PDT by Moonman62 (The US has become a government with a country, rather than a country with a government.)
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To: ImJustAnotherOkie

Can they still fry chickens in the barnyard?

40 posted on 05/27/2014 12:20:05 PM PDT by Moonman62 (The US has become a government with a country, rather than a country with a government.)
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