AERO212 2024 1 (a) Define Equivalent Air-Speed (EAS). (b) Show that the power (P) required to overcome drag in straight-and-level flight is related to equivalent airspeed (VE) and relative density by the equation GP=PVS a+b mg POVS Sketch a graph of the relationship. Deduce the corresponding formula applicable in a correctly banked level turn, at bank angle o. (c) A propeller-driven aircraft of mass 7500 kg with wing-area 30 m, drag polar CD=0.036+0.031C2, propeller efficiency n = 92%, and specific fuel consumption (SFC) of 1.0x107 kg J1 flies straight-and-level at altitude h = 5 km. Calculate: [5] [15] (i) Equivalent airspeed and shaft power corresponding to the minimum power condition; [15] (ii) Lift-to-drag ratio, true and equivalent airspeeds and required shaft power for straight-and-level flight at C = 0.4. [15]