Talk:General Electric TF34

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I find the description confusing. Am I reading correctly that there are four turbine stages powering just the fan? And how many spools are there? Just two? Maury 21:31, 29 January 2007 (UTC)[reply]

You are correct about the low pressure section - there are 4 turbine stages (LPT) powering the fan alone. It applies to TF34, CF34-3 and CF34-8. The 14-stage (TF and -3) or 10 stage (-8) compressor spool is powered by 2-stage high pressure turbine (HPT). You should remember that a majority the turbofan engine thrust is the flow generated by the fan. This is why it needs so much torque from LPT. TRakowski 16:56, 31 January 2007 (UTC)[reply]

Sure, but FOUR turbines? What did they do, make them out of paper? Weird. Maury 00:11, 17 June 2007 (UTC)[reply]

Someone can add the following information from http://www.rand.org/pubs/monograph_reports/2005/MR1596.pdf (Page 66) I don't have time to figure out if I am using the template correctly

TF34-GE-2 Average Thrust: 8,165 Kg/Sec SFC: 0.35 Pressure Ratio: 21.9 TIT: 2,054 *F Air Flow: 318 lbs/second

TF34GE-100 Average Thrust: 7,990 Kg/Sec SFC: 0.36 Pressure Ratio: 19.8 TIT: 2,234 *F Air Flow: 314 lbs/second

TF34GE-400 Average Thrust: 8,159 Kg/Sec SFC: 0.35 Pressure Ratio: 21.9 TIT: 2,142 *F Air Flow: 338.3 lbs/second —Preceding unsigned comment added by 206.207.156.153 (talk) 04:16, 5 November 2009 (UTC)[reply]

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