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What is the limitation of current engine design?

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in Aircraft Design by (701k points)
What is the limitation of current engine design?

(a) Turbine inlet temperature

(b) Inlet flow velocity reduction limitation

(c) Flow velocity over wing

(d) Expansion fan only

The question was posed to me in unit test.

My question is from Propulsion in section Propulsion of Aircraft Design

1 Answer

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The correct answer is (a) Turbine inlet temperature

To explain: Turbine inlet temperature is one of the biggest obstacle of current engine design. For best Thrust and efficiency it is desirable to use stoichiometric air fuel ratio of 15:1. However, this generated tremendous high temperatures. Such high temperatures are beyond the limits of materials used for Turbine.

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