4. The following data provide details for a piston-propeller engine combination for a single-seater aircraft: Table 4 Parameter Value Pistons 4 Bore 11.1 cm Stroke 9.84 cm Compression ratio 6.75 Mechanical efficiency 0.83 Propeller efficiency 0.85 Fuel-to-air ratio 0.08 Pintake 1 atm Tintake 11.85°C RPM 2800 Fuel properties: Density Energy released per kg Oxidizer properties: Y R Ср 0.51 kg/m³ 46.1 MJ/kg 1.4 288 J/kg. K 1008 J/kg. K (a). Graph the ideal and actual P-V diagram for the above engine. Calculate: (b). The power available. (c). The mean effective pressure.

Elements Of Electromagnetics
7th Edition
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Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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4.
The following data provide details for a piston-propeller engine combination for
a single-seater aircraft:
Table 4
Parameter
Value
Pistons
4
Bore
11.1 cm
Stroke
9.84 cm
Compression ratio
6.75
Mechanical efficiency
0.83
Propeller efficiency
0.85
Fuel-to-air ratio
0.08
Pintake
1 atm
Tintake
11.85°C
RPM
2800
Fuel properties:
Density
Energy released per kg
Oxidizer properties:
Y
R
Ср
0.51 kg/m³
46.1 MJ/kg
1.4
288 J/kg. K
1008 J/kg. K
(a). Graph the ideal and actual P-V diagram for the above engine.
Calculate:
(b). The power available.
(c). The mean effective pressure.
Transcribed Image Text:4. The following data provide details for a piston-propeller engine combination for a single-seater aircraft: Table 4 Parameter Value Pistons 4 Bore 11.1 cm Stroke 9.84 cm Compression ratio 6.75 Mechanical efficiency 0.83 Propeller efficiency 0.85 Fuel-to-air ratio 0.08 Pintake 1 atm Tintake 11.85°C RPM 2800 Fuel properties: Density Energy released per kg Oxidizer properties: Y R Ср 0.51 kg/m³ 46.1 MJ/kg 1.4 288 J/kg. K 1008 J/kg. K (a). Graph the ideal and actual P-V diagram for the above engine. Calculate: (b). The power available. (c). The mean effective pressure.
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