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Does anyone know what is the value of fuel mass flow rate when stationary at full power for CFM56-5C2 or CFM65-3C1 turbofan engines? I am doing a work on engine performance and it seems that only information I can't find is the fuel flow rate at conditions above. I will be very grateful to someone who can help me.

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  • $\begingroup$ fuel consumption times thrust? $\endgroup$ – user3528438 Mar 30 '18 at 15:12
  • $\begingroup$ @user3528438 You mean TSFC? If you know the TSFC at conditions above I can calculate the fuel mass flow and would resolve the issue. $\endgroup$ – Darjan Mar 30 '18 at 15:22
  • $\begingroup$ Are you sure of the /3C1 part? I can't find it on the type certificate. $\endgroup$ – ymb1 Apr 3 '18 at 11:57
  • $\begingroup$ @ymb1 Pretty much. But -3C will also work as well I think. Any data about it would be helpfull. $\endgroup$ – Darjan Apr 3 '18 at 14:54
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If you know the TSFC at conditions above I can calculate the fuel mass flow and would resolve the issue.

From this page, the CFM56-5C2 used on the A340-211/-311 delivers 31,200 lbf and its SFC is 0.320 lb/lbf hr. The cruise thrust and SFC are 6,910 and 0.545 respectively.

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