A typical jet airliner has cruise thrust to weight ratio of 0.5. Determine at which aerodynamic efficiency this airliner is flying.(a) 2(b) 3(c) 4(d) 5This question was posed to me in an interview for job.Asked question is from Thrust Weight Ratio-2 in chapter Thrust-Weight Ratio and Wing Loading of Aircraft Design

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1.	A typical jet airliner has cruise thrust to weight ratio of 0.5. Determine at which aerodynamic efficiency this airliner is flying.(a) 2(b) 3(c) 4(d) 5This question was posed to me in an interview for job.Asked question is from Thrust Weight Ratio-2 in chapter Thrust-Weight Ratio and Wing Loading of Aircraft Design
Answer» The correct answer is (a) 2 Easiest explanation: GIVEN, Thrust LOADING at cruise T/W Thrust loading at cruise T/W = 1 / (L/D) Hence, Aerodynamic efficiency (L/D) at cruise is, L/D = 1 / (T/W) = 1/0.5 = 2.

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