[maxkang]

What type of drag(among form,skin friction, and induced drag) contributes the most towards the total drag on ground roll before takeoff and after takeoff? My initial guess was that induced drag would be quite small for ground roll due to the ground effect(in absolute terms) but after doing simple math to find the induced drag coefficient, it seems that there will relatively be a lot more induced drag than other types of drag. What I am not sure about is the relative amounts of each at zero AOA. If the percentage of each can be also given, that would be really awesome!

Thank you,