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What will be the specific endurance of an aircraft having fuel mass flow 0.75 kg/s and true air speed is 300m/s?(a) 400 m/kg(b) 333 m/kg(c) 133 m/kg(d) 250 m/kgThe question was asked in quiz.This is a very interesting question from Cruising Performance topic in section Cruising Performance of Aircraft Performance

Answer»

The CORRECT option is (a) 400 m/kg

For EXPLANATION I would say: The answer is 1.33. Given Qf=0.75 kg/s. The SPECIFIC endurance is given by SAR=\(\FRAC{V}{Q_f}\)

On substituting we get SAR=\(\frac{300}{0.75}\)

SAR=400m/kg.



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