b-52 engines?

Question

writing a report on b-52 stratofortress... on a part about the engines. i know that there are 8 pratt & whitney engines, but what is the power of the engines?

Answer 1

For the B-52H

Powerplant: 8× Pratt & Whitney TF33-P-3/103 turbofans, 17,000 lbf (76 kN) each

sc0tt.rm below: Apparently they are TF33-P-3s. I couldn't believe they had never been re-engined or upgraded. Boeing proposed replacing the pairs of TF33s with single RB211-535-E4s (at 43,100 lb.s.t) on a per flying hour lease scheme at a projected saving of over $5 billion. The USAF audited the figures and decided they would be better off maintaining the stock engines because they could only save $400M over 40 years. The 'Science Board' claims the USAF got their sums wrong and the savings would be $9 billion and more with current operations in Afghanistan because the USAF priced all the fuel as if delivered to home base instead of having to be in flight refueled at 10x the cost (see second link below).

Answer 2

The B-52 configuration was decided in 1948. At that time, the most powerful jet engines available had a thrust such that 8 of them would be required to haul around an aircraft the weight of the B-52. There were proposals in the 1960's to replace the 8 'small' engines with 4 larger ones, which would have also been more fuel efficient, but this was seen as not cost effective, since the plane was always 'close to retirement'. In hindsight, given that B-52 are still in service, with the newest airframe now 50 years old, it may have been a good idea to change the engine configuration, but as they say, hindsight is 20/20. Since it is envisioned that B-52 could remain in service for an additional 30 years (!) perhaps re-motorization could be seen as a cost effective project, especially since the vintage engines are likely to have a limited supply of spares.

Answer 3

The B-52 came in two different engines B-52A-G had the Pratt and Whitney J57-P-19W or 29W this engine makes 13,750 lbs of thrust. The B-52H has the TF33-P-3/103 this engine makes 17,000 lbs of thrust. I hope this was helpful.

Answer 4

I Will agree with Chris on that answer

Eight Pratt & Whitney engines TF33-P-3/103 turbofan
Each engine up to 17,000 pounds (7,650 kilograms)

Answer 5

I find the previous answer of 17,000 pounds interesting. I am a flight engineer on the E-3, which also uses the P&W TF33-100A (notice the package difference). Ours produce 20,000lbs of thrust and that is with two generators strapped to each engine. I'm not saying he is wrong, maybe the BUFFs are downrated since it has EIGHT.