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performance calculations for the General Electric GEnx-2B67 aircraft engine

GEnx on 747-8I prototype

General Electric GEnx-2B67 turbofan engine of 296.0 [KN] (66542 [lbf]) thrust

introduction : 2011 country : us importance : ok

applications : Boeing 747-8I

max. rating (take-off) : 296.0 [KN] (66542 [lbf], 30184 [kgf])

weight engine(s) dry : 5623.0 [kg] = 52.64 [N/kg]

General information :

by-pass ratio : 8.00 : 1

overall pressure ratio (OPR) : 44.7 : 1

noise category : S2 TO-noise level : 92.0 [EPNdB]

rpm LP : 2835 [rpm]

rpm HP : 11377 [rpm]

axial flow engine

arrangement : 1 Fan followed by :

LP compressor stages : 3 [ ]

HP compressor stages : 10 [ ]

HP turbine stages : 2 [ ]

LP turbine stages : 6 [ ]

stages : 1 + 3 + 10 + 2 + 6

turbine inlet temperature : 0 [K]

fan diameter : 266.0 [cm] engine diameter : 0.0 [cm]

air mass flow : 1042 [kg/s]

airflow/fan area : 0.72 [kg/m2/s]

Vjet at take-off brake-release : 1022.65 [km/h]

design hours : 21974 [hr] time between overhaul : 5986 [hr]

estimated specific fuel consumption (cruise power) :47.0 [kg/KNh]

The chevron nozzles provide significant noise reduction. These engine power Air China Boeing 747-89L B-2487

Literature :

General Electric GEnx - Wikipedia

DISCLAIMER Above calculations are based on published data, they must be

regarded as indication not as facts.

Calculated performance and weight may not correspond with actual weights

and performances and are assumptions for which no responsibility can be taken.

Calculations are as accurate as possible, they can be fine-tuned when more data

is available, you are welcome to give suggestions and additional information

so we can improve our program. For copyright on drawings/photographs/

content please mail to below mail address

(c) B van der Zalm 07 October 2024 contact : info.aircraftinvestigation@gmail.com ac jetpax 2020.py python 3.7.4

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