737 wheel well drag. why aren’t more a/c door-less?
With just a less-that-smooth paintjob meaning a few-percent increase in fuel burn, how much penalty do these cause? What would have been the weight of the doors? How about exposing the gears to elements, that must cost extra in maintenance. No doubt the math comes to show that it is cheaper the way they are - so why not all aircraft? What other a/c incorporated the feature?