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liquid-cooled 8 -cylinder V-engine 203 [hp](149.3 KW)
introduction : januar 1918 country : United Kingdom
users : RAF S.E.5a WWI fighter plane
normal rating : 203 hp at 2005 rpm at 1100m
high compression engine : cannot run at full power at sea level, constant power to
height : 1100 [m]
no reduction, direct-drive
weight engine(s) dry : 227.0 [kg] = 1.52 [kg/KW]
bore : 120.0 [mm] stroke : 130.0 [mm]
compression ratio: 5.30 :1
volume (displacement) Vs : 11.770 [litre]
compression volume Vc : 2.735 [litre]
total volume Vt : 14.498 [litre]
power / stroke volume (litervermogen Nl): 12.7 [kW/litre]
torque : 711.11 [Nm]
engine weight/volume : 19.3 : [kg/litre]
average piston speed (Cm): 8.7 [m/s]
intake pressure at 1100 [m] hoogte Pi : 0.83 [kg/cm2]
mean engine pressure (M.E.P.) at 1100 [m] hoogte Pm : 6.29 [kg/cm2]
compression pressure at 1100 [m] hoogte Pc: 7.08 [kg/cm2]
estimated combustion pressure at 1100 [m] Pe : 28.30 [kg/cm^2 ]
exhaust pressure at 1100 [m] Pu : 3.33 [kg/cm^2 ]
compression-end temperature at 1100 [m] Tc: 590.12 [°K] (316.97 [°C])
caloric combustion temperature at 1100 [m] Tec: 2247.99 [°K] (1974.84 [°C])
polytrope combustion temperature at 1100 [m] Te (T4): 2354.93 [°K] (2081.78 [°C])
exhaust temperature at 1100 [m] Tu: 1311.45 [°K] (1038.30 [°C])
estimated combustion pressure at sealevel Pe : 31.60 [kg/cm^2 ]
compression-end temperature at sealevel Tc:595.10 [°C]
mean engine pressure at sealevel Pm : 7.03 [kg/cm2]
(emergency) rating at sea level : 225.90 [hp
]
Thermal efficiency Nth : 0.34 [ ]
Mechanical efficiency Nm : 0.76 [ ]
Thermo-dynamic efficiency Ntd : 0.26 [ ]
design hours : 673 time between overhaul : 54
fuel consumption at 2005 rpm at 1100 [m] : 49.50 [kg/hr]
specific fuel consumption thermo-dynamic : 0.331 [kg/kwh]
specific fuel consumption at 1100 [m] at 2005 [rpm] optimum mixture : 0.332 [kg/kwh]
estimated specific oil consumption (cruise power) : 14 [gram/kwh]
last check python :
DISCLAIMER above calculations are based on published data, they must be regarded
as indication not as facts.
Calculated performance and dimensions may not correspond with actual weights and
dimensions 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