Assume that the fuel lines for each engine in the Boeing Dreamliner of Problem P6.17 are 7/8 in. in diameter and that the density and viscosity of jet fuel are 800 kg/m3 and 8.0 × 1023 kg/(m ? s), respectively. Calculate the average velocity of the fuel in m/s and the Reynolds number of this flow. Also determine whether the flow is laminar or turbulent.
Reference: Problem P6.17
The Boeing 787 Dreamliner is billed to be 20% more fuel efficient than the comparable Boeing 767 and will fly at Mach 0.85. The midsize Boeing 767 has a range of 12,000 km, a fuel capacity of 90,000 L, and flies at Mach 0.80. Assume the speed of sound is 700 mph, and calculate the projected volumetric flow rate of fuel for each of the two Dreamliner engines in m3/s.
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