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performance calculations for the Kuznetsov NK-86 aircraft engine
Kuznetsov NK-86 turbofan engine of 127.5 [KN] (28663 [lbf]) thrust
introduction : 1979 country : USSR importance : **
applications : Ilyushin Il-86
max. rating (take-off) : 127.5 [KN] (28663 [lbf], 13001 [kgf])
weight engine(s) dry : 2540.0 [kg] = 50.20 [N/kg]
General information :
Low by-pass turbofan engine. Upgraded version of the NK-8. Due to lack of
resources and not enough time for the strict dead-line for the Il-86 program,
Kuznetsov decided not to develop a total new turbofan engine but choose for a NK-8
upgrade program. This saved time but fuel consumption and power output fell short
compared with modern new turbofan designs.
by-pass ratio : 1.15 : 1
noise category : MCC3 (marginally complaint chapter 3) TO-noise level : 105.7
[EPNdB]
rpm HP : 13000 [rpm]
axial flow engine
arrangement : 1 Fan followed by :
LP compressor stages : 5 [ ]
HP compressor stages : 6 [ ]
HP turbine stages : 1 [ ]
LP turbine stages : 2 [ ]
stages : 1 + 5 + 6 + 1 + 2
turbine inlet temperature : 1260 [K]
fan diameter : 144.5 [cm] engine diameter : 160.0 [cm]
air mass flow : 156 [kg/s]
airflow/fan area : 0.38 [kg/m2/s]
Speed of jet at take-off brake-release : 2950.05 [km/h]
design hours : 769 [hr] time between overhaul : 8410 [hr]
estimated specific fuel consumption (cruise power) :76.5 [kg/KNh]
Literature :
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 13 May 2024 contact : info.aircraftinvestigation@gmail.com ac jetpax 2020.py python 3.7.4
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