747400sp
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Any Photos Of Proposed CFM-56-2 Powered B-52?

Wed Mar 03, 2010 3:00 am

Around 2006, I found out that there was a proposed program I believe in the 80's, to re-engine B-52s by replaceing their eight T-33s with six CFM-56-2. If anybody has any photos of how this re-engine B-52 would have looked, please post it? It would have been cool to see a jet with six CFM-56.
 
tf39
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RE: Any Photos Of Proposed CFM-56-2 Powered B-52?

Wed Mar 03, 2010 5:13 am

Unfortunately I don't have any photos/images but I thought the proposal was only for four CFM engines. At 34K pounds of thrust each, that should be enough since two TF-33 produce the same thrust. Hopefully someone has some pictures though  
 
HaveBlue
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RE: Any Photos Of Proposed CFM-56-2 Powered B-52?

Wed Mar 03, 2010 5:49 am

Quoting tf39 (Reply 1):
Unfortunately I don't have any photos/images but I thought the proposal was only for four CFM engines

I agree with tf39 I think it was only 4 engines, which makes sense since they already have 4 pylons ready to go for that and 6 would be overkill.
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sasd209
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RE: Any Photos Of Proposed CFM-56-2 Powered B-52?

Wed Mar 03, 2010 7:38 am

Yes, I think the 6 engine idea would most likely result in a re-designing of the wing pylons? I would think that with the power available with more modern engines, as you have earlier said, this could easily be done with the 4 pylons and existing more modern engines than they currently fly with?
 
a380heavy
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RE: Any Photos Of Proposed CFM-56-2 Powered B-52?

Wed Mar 03, 2010 9:15 am

Found this image of the B52 re-engined with Rolls-Royce RB211's which will give you some idea of how the '52 would look with modern engines.

http://homepage.ntlworld.com/rez.manzoori/fakes/524-buff.jpg
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N328KF
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RE: Any Photos Of Proposed CFM-56-2 Powered B-52?

Wed Mar 03, 2010 2:17 pm

Just two GE90-115Bs would do the job, too! But they'd never fit.  
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kc135topboom
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RE: Any Photos Of Proposed CFM-56-2 Powered B-52?

Wed Mar 03, 2010 3:07 pm

Quoting tf39 (Reply 1):
Unfortunately I don't have any photos/images but I thought the proposal was only for four CFM engines. At 34K pounds of thrust each, that should be enough since two TF-33 produce the same thrust. Hopefully someone has some pictures though
Quoting HaveBlue (Reply 2):
I agree with tf39 I think it was only 4 engines, which makes sense since they already have 4 pylons ready to go for that and 6 would be overkill.
Quoting sasd209 (Reply 3):
Yes, I think the 6 engine idea would most likely result in a re-designing of the wing pylons?

The mid 1980s B-52 reengine proposal was for 6 CFM-56-2B engines (F-108-100), the same engine then going on the KC-135R, and it would have looed like a modern day B-47E. The reengine proposal was for all B-52G/H airplanes as it was before the START treaty that scrapped the B-52G. The engine struts would have been changed in the proposal, as well as brakes, landing gear, modifications to electrical and hydraulic systems, and adding a duel APU for "quick-start" (same engines and APUs as the KC-135R), etc. IIRC, the costs were estimated at around $45M-$50M per aircraft, compared to the $29M costs to reengine the KC-135R. The B-52 reengine proposal was never funded.

Quoting A380Heavy (Reply 4):
Found this image of the B52 re-engined with Rolls-Royce RB211's which will give you some idea of how the '52 would look with modern engines.

Correct, but that proposal was also never funded either.

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