747400sp From United States of America, joined Aug 2003, 3847 posts, RR: 2 Posted (5 years 10 hours ago) and read 11921 times:
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 From United States of America, joined Jul 2006, 110 posts, RR: 0
Reply 1, posted (5 years 8 hours ago) and read 11884 times:
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
sasd209 From British Indian Ocean Territory, joined Oct 2007, 642 posts, RR: 0
Reply 3, posted (5 years 6 hours ago) and read 11818 times:
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?
KC135TopBoom From United States of America, joined Jan 2005, 12211 posts, RR: 51
Reply 6, posted (4 years 12 months 4 days 22 hours ago) and read 11550 times:
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.