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Gnome 9N Monosoupape
air-cooled 9 -cylinder Monosoupape rotary engine 160 [hp](117.7 KW)
introduction : January 1918 country : France importantie : **
applications :
normal rating : 160 [hp](117.7 KW) at 1350 [rpm] at 1500 [m] above sea level
high compression engine : cannot run at full power at sea level, constant power to
height : 1500 [m]
no reduction, direct drive
weight engine(s) dry : 154.0 [kg] = 1.31 [kg/KW]
bore : 115.0 [mm] stroke : 170.0 [mm]
compression ratio: 5.45 :1
stroke volume (Vs) : 15.892 [litre]
compression volume : 3.571 [litre]
total volume : 19.463 [litre]
power / stroke volume (Nl): 7.4 [kW/litre]
torque : 832 [Nm]
engine weight/volume : 9.7 : [kg/litre]
average piston speed (Cm): 7.7 [m/s]
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intake pressure at 1500 [m] hoogte Pi : 0.79 [kg/cm2]
mean engine pressure (M.E.P.) at 1500 [m] hoogte Pm : 5.32 [kg/cm2]
compression pressure at 1500 [m] hoogte Pc: 6.98 [kg/cm2]
estimated combustion pressure at 1500 [m] Pe : 27.94 [kg/cm^2 ]
exhaust pressure at 1500 [m] Pu : 3.17 [kg/cm^2 ]
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compression-end temperature at 1500 [m] Tc: 574 [°K] (301 [°C])
caloric combustion temperature at 1500 [m] Tec: 2247 [°K] (1974 [°C])
polytrope combustion temperature at 1500 [m] Te (T4): 2288 [°K] (2015 [°C])
exhaust temperature at 1500 [m] Tu: 1196 [°K] (923 [°C])
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compression pressure at sea level Pc: 8.19 [kg/cm2]
estimated combustion pressure at sealevel Pe : 32.75 [kg/cm^2 ]
compression-end temperature at sealevel Tc: 582 [°K]
mean engine pressure at sealevel Pm : 6.24 [kg/cm2]
(emergency) rating at sea level : 193 [pk]
Thermal efficiency Nth : 0.35 [ ]
Mechanical efficiency Nm : 0.78 [ ]
Thermo-dynamic efficiency Ntd : 0.27 [ ]
design hours : 770 time between overhaul : 70
fuel consumption optimum mixture at1350.00 [rpm] at 1500 [m] : 41.43 [kg/hr]
specific fuel consumption thermo-dynamic : 234 [gram/epk] = 318 [gram/kwh]
estimated specific fuel consumption (cruise power) at 1500 [m] optimum mixture : 330
[gram/kwh]
specific fuel consumption at 1500 [m] at 1350 [rpm] optimum mixture : 352.06
[gram/kwh]
estimated specific oil consumption (cruise power) : 87 [gram/kwh]
literature : http//www.pilotfriend.com/aero-engines/profiles
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/photograps/content please mail to below mail address
(c) B van der Zalm 30 november 2018 contact : bvanderzalm@ziggo.nl python 3.4.1