What is Brequet Range expression?(a) R1 = \(\frac{D}{C}\frac{L}{V}\) ln ω(b) R1 = \(\frac{1}{C} \left[\frac{2W}{\rho S}\right]^{\frac{1}{2}} \frac{C_L^{\frac{1}{2}}}{C_D}\) ln ω(c) R1 = \(\frac{1}{V} \left[\frac{2W}{\rho S}\right]^{\frac{1}{2}} \frac{C_L^{\frac{1}{2}}}{C_D}\)ln ω(d) R1 = \(\frac{V}{C}\frac{L}{D}\) ln ωThis question was addressed to me in an interview for internship.Asked question is from Cruise Method 1 topic in division Cruising Performance of Aircraft Performance

What is Brequet Range expression?(a) R1 = \(\frac{D}{C}\frac{L}{V}\) l

1.	What is Brequet Range expression?(a) R1 = \(\frac{D}{C}\frac{L}{V}\) ln ω(b) R1 = \(\frac{1}{C} \left[\frac{2W}{\rho S}\right]^{\frac{1}{2}} \frac{C_L^{\frac{1}{2}}}{C_D}\) ln ω(c) R1 = \(\frac{1}{V} \left[\frac{2W}{\rho S}\right]^{\frac{1}{2}} \frac{C_L^{\frac{1}{2}}}{C_D}\)ln ω(d) R1 = \(\frac{V}{C}\frac{L}{D}\) ln ωThis question was addressed to me in an interview for internship.Asked question is from Cruise Method 1 topic in division Cruising Performance of Aircraft Performance
Answer» Correct option is (d) R1 = \(\frac{V}{C}\frac{L}{D}\) ln ω Easiest explanation: Brequet Range EXPRESSION is given by R1 = \(\frac{V}{C}\frac{L}{D}\) ln ω where V is true AIRSPEED, C is SPECIFIC fuel consumption, L is LIFT, D is drag, and ω is fuel ratio. This Brequet Range expression comes in the cruise method 1.

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