View Full Version : RPM at 100% N1 for GE90-115BL
Adverseyawn
4th Jun 2008, 11:49
Does anyone know what the numerical RPM value is at 100% N1 on the GE90-115BL on the B777-300ER.
Need to settle a pub discussion...Anyone....?
I'm guessing 4000-5000 RPM.
XPMorten
4th Jun 2008, 15:55
Next round is on you :ok:
RPM at N1 100% is 2355 rpm
http://www.easa.europa.eu/ws_prod/c/doc/Design_Appro/Engines/TCDS_GE90_E_002.pdf
Not sure about the exact N1 fan diameter, but 4-5000 rpm would
probably make the GE90 N1 fan tip exceed the speed of sound.
XPM
Adverseyawn
5th Jun 2008, 11:58
Thanks XPMorten! Yeah, on further reflection, my guess was too high considering the fan diameter.
Thanks for the cool website with all the information, as well.
All the best!