Engine which can be estimated through statistical jet engine model has bypass ratio of 1.2 and maximum thrust at takeoff is 8000 Newton then what should be the design diameter for this engine. Consider a subsonic non after burning engine.(a) 36.87 unit(b) 6.19 unit(c) 7.2 unit(d) 58.93 unitThe question was asked in examination.I'm obligated to ask this question of Propulsion in section Propulsion and Fuel System Integration of Aircraft Design

Engine which can be estimated through statistical jet engine model has

1.	Engine which can be estimated through statistical jet engine model has bypass ratio of 1.2 and maximum thrust at takeoff is 8000 Newton then what should be the design diameter for this engine. Consider a subsonic non after burning engine.(a) 36.87 unit(b) 6.19 unit(c) 7.2 unit(d) 58.93 unitThe question was asked in examination.I'm obligated to ask this question of Propulsion in section Propulsion and Fuel System Integration of Aircraft Design
Answer» The CORRECT choice is (a) 36.87 unit Easy EXPLANATION: GIVEN, Thrust = 8000unit, BPR = 1.2 Diameter d is given by, d = 0.393 * (T^0.5) * e ^(0.04 * BPR) = 0.393 * (8000)^0.5 * e ^(0.04 * 1.2) = 0.39389.4421.049 = 36.87 unit.

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