Mikulin M.17 info | aircraft investigation

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performance calculations for the Mikulin M-17 aircraft engine

Combat aircraft. About aircraft engines, their own and not very

Mikulin M-17 6.0 liquid-cooled 12 -cylinder V-engine 680 [hp](507.1 KW)

introduction : 1933 country : USSR importance : ***

applications : Tupolev PS-9

max. continuous (take-off) rating : 680 [hp](507.1 KW) at 1600 [rpm] at 0 [m] above

sea level

no reduction, direct drive, valvetrain : 0

weight engine(s) dry : 540.0 [kg] = 1.06 [kg/KW]

General information : license built German BMW VI, further developed by Alexander

Mikulin . Production was from 1930 until 1942 in Rybinsk and total 27.000 built.

Besides in aircraft it was used in tanks in WWI.

fuel system : Zenith 60DCL fuel type : octane grade no. 80 oil system :

engine starter type :

bore : 160.0 [mm] stroke : 190/199 [mm]

valve inlet area : 39.1 [cm^2] one inlet and one exhaust valve in cylinder head

gasspeed at inlet valve : 37.6 [m/s]

throttle : 98.0 /100 open, mixture :13.0 :1

compression ratio: 6.00 :1

stroke volume (Vs displacement): 46.950 [litre]

compression volume (Vc): 9.395 [litre]

total volume (Vt): 56.371 [litre]

engine height : 110 [cm] engine width : 86 [cm]

engine length: 181 [cm]

specific power : 10.8 [kW/litre]

torque : 3026 [Nm]

engine weight/volume : 11.5 : [kg/litre]

average piston speed (Cm): 10.4 [m/s]

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intake manifold absolute pressure (MAP) at 0 [m] altitude Pi : 0.93 [kg/cm2]

(27.07 [inHg])

mean engine pressure (M.E.P.) at 0 [m] altitude Pm : 7.38 [kg/cm2]

compression pressure at 0 [m] altitude Pc: 8.78 [kg/cm2]

estimated combustion pressure at 0 [m] Pe : 35.06 [kg/cm2]

exhaust pressure at 0 [m] Pu : 3.67 [kg/cm^2 ]

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compression-start temperature at 0 [m] Tic: 369 [°K] (96 [°C])

compression-end temperature at 0 [m] Tc: 560 [°K] (287 [°C])

average engine wall temperature at 0 [m] : 476 [K] (202 [°C])

caloric combustion temperature at 0 [m] Tec: 2275 [°K] (2002 [°C])

polytroph combustion temperature at 0 [m] Tep : 2239 [°K] (1965 [°C])

estimated combustion temperature at 0 [m] Te (T4): 2217 [°K] (1944 [°C])

polytrope expansion-end temperature at 0 [m] Tup: 1178 [°K] (904 [°C])

exhaust stroke end temperature at 0 [m] Tu: 1094 [°K] (821 [°C])

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calculations for take-off/emergency power at sea level

average piston speed : 10.6 [m/s]

gasspeed at inlet valve : 38.3 [m/s]

caloric combustion temperature at sea level Tec: 2213 [°K] (1940 [°C])

emergency/take off rating at 1633 [rpm] at sea level : 678 [hp]

Thermal efficiency Nth : 0.361 [ ]

Mechanical efficiency Nm : 0.745 [ ]

Thermo-dynamic efficiency Ntd : 0.269 [ ]

design hours : 969 [hr] time between overhaul : 238 [hr]

dispersed heat by cooling fluids at 1600.00 [rpm] at 0 [m]: 49.19 [Kcal/minuut/litre]

fuel consumption optimum mixture at 1600.00 [rpm] at 0 [m]: 184.43 [kg/hr]

specific fuel consumption thermo-dynamic : 223 [gr/epk] = 299 [gr/kwh]

estimated specific fuel consumption (cruise power) at 0 [m] : 313 [gr/kwh]

specific fuel consumption at 0 [m] at 1600 [rpm] with mixture :13.0 :1 : 364 [gr/kwh]

estimated specific oil consumption (cruise power) : 9 [gr/kwh]

Literature :

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/

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notes :