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How much of the drag produced by a typical GA/airliner/cargo plane's wing at cruise is induced, frictional, and pressure drag?

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  • $\begingroup$ Induced drag is mainly due to pressure drag. It'd be more correct to ask how much is induced and how much is parasite $\endgroup$
    – sophit
    Feb 18 at 15:45

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At best L/D, an aircraft (with a simple parabolic polar) has half induced and half parasite drag.

If half the parasite drag is from the fuselage -- and you are flying at best L/D, then we can say that of the total drag:

25% fuselage parasite 25% wing parasite 50% induced

Or, of just the wing

33% parasite 66% induced

You likely aren't cruising exactly at best L/D. And you will have other components that contribute to the parasite drag of the aircraft. But this should give you a reasonable idea of how to make a starting estimate.

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