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The second fuel flow law is used in the turbojet or turbofan.

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The second fuel flow law is used in the turbojet or turbofan.

(a) True

(b) False

I have been asked this question in exam.

My question is taken from Range and Endurance for Aircraft with Thrust Producing Engines in section Cruising Performance of Aircraft Performance

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The correct answer is (a) True

The explanation is: The significance of first fuel flow law is that the specific fuel consumption is constant. The significance of second fuel flow law is that it considers temperature and effects of mach number. The significance of third fuel flow law is that assumptions are taken for empirical fuel flow data. The second fuel flow law is used in the turbojet or turbofan. Also it takes in account the temperature and effects of mach number.

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