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How Much Thrust Could A Low By-pass Tf-39 Make?

Wed Jul 26, 2006 1:24 am

I was thinking about how GE was able use the loud low by-pass F-101 design, and make a quiet High by-pass engine like the CFM-56. It got me to thinking, what if they took the loud high by-pass TF-39 and reduce it fan size and it's BPR to 2:0 and make a low by-pass version of it. So if GE was to make a low by-pass version of the TF-39 with afterburners, how much power do you think they could get out of it?
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RE: How Much Thrust Could A Low By-pass Tf-39 Make

Wed Jul 26, 2006 10:15 pm

There's no reason to use the TF39 core for anything. It's ancient.

The F101 is ca. 31,000 pounds thrust (at sea level/static conditions).
Its derivative, the F110, is 29,000+. The next step up in thrust, the F136, already exists, with decades-newer technology in every component.

If in some alternate universe the TF39 core were used for a low bypass turbofan, I'd guess it would be in the 34-38,000 pound thrust class in afterburner.

Finally, please use the correct designations for these engines: F101, CFM56, TF39; no hyphen. A hyphen is used after the digits to designate subtype, such as CFM56-7, TF39-1C, or F110-129.
"He is risen, as He said."
Topic Author
Posts: 3900
Joined: Sat Aug 09, 2003 7:27 pm

RE: How Much Thrust Could A Low By-pass Tf-39 Make?

Thu Jul 27, 2006 2:40 am

Thank you


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