What is endurance factor?(a) \(\big[\frac{E_{max}}{C}\big]\)(b) \(\big[\frac{E_{max}}{VC}\big]\)(c) \(\big\{\frac{2u^3}{u^4+1}\big\}\)(d) \(\big\{\frac{2u^4}{u^4+1}\big\}\)The question was posed to me in examination.I would like to ask this question from Cruise Method 1 topic in section Cruising Performance of Aircraft Performance

What is endurance factor?(a) \(\big[\frac{E_{max}}{C}\big]\)(b) \(\big

1.	What is endurance factor?(a) \(\big[\frac{E_{max}}{C}\big]\)(b) \(\big[\frac{E_{max}}{VC}\big]\)(c) \(\big\{\frac{2u^3}{u^4+1}\big\}\)(d) \(\big\{\frac{2u^4}{u^4+1}\big\}\)The question was posed to me in examination.I would like to ask this question from Cruise Method 1 topic in section Cruising Performance of Aircraft Performance
Answer» The CORRECT option is (a) \(\big[\frac{E_{max}}{C}\big]\) The explanation: The endurance factor is given by \(\big[\frac{E_{max}}{C}\big]\) where Emax is endurance and C is SPECIFIC fuel consumption. The endurance equation is given by E=\(\big[\frac{E_{max}}{C}\big]\big\{\frac{2u^2}{U^4+1}\big\}\)lnωwhere V is true airspeed, C is specific fuel consumption, L is lift, D is DRAG, Emax is endurance, u is relative airspeed and ω is fuel ratio.

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