= = An aircraft manufacturer wants some preliminary performance figures for a new twin- engined commuter airliner projec

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= = An aircraft manufacturer wants some preliminary performance figures for a new twin- engined commuter airliner projec

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An Aircraft Manufacturer Wants Some Preliminary Performance Figures For A New Twin Engined Commuter Airliner Projec 1
An Aircraft Manufacturer Wants Some Preliminary Performance Figures For A New Twin Engined Commuter Airliner Projec 1 (53.1 KiB) Viewed 47 times
= = An aircraft manufacturer wants some preliminary performance figures for a new twin- engined commuter airliner project. It has not yet been decided how the aircraft will be powered but the following is known: Wing area = 75 m2 Maximum cruise speed = 540 kmh EAS Drag polar is estimated as Cp = 0.025 +0.05CZ For a cruise mass of 25000 kg, find: (i) the minimum drag speed (EAS); [86.89 m/s] (ii) the minimum power speed (EAS); [66.02 m/s] (iii) the lift-to-drag ratio at the maximum cruise speed; [8.53] a 26
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