> Even though, counter intuitively, the long hump has less drag. Not directly related but readers may be interested in the Area Rule. This is more aimed at t

> Even though, counter intuitively, the long hump has less drag. Not directly related but readers may be interested in the Area Rule. This is more aimed at trans and super sonic flight so I don't think that applicable to the 747. Basically the whole area cross sections down the length of the plane needs to be smooth so when it's punching a hole in the air the compression ( volume displacement ) around it is even and this reduces drag. The generally do this by narrowing the fuselage at the places the wings and external engines are. The Blackburn Buccaneer is a good example. https://modelingmadness.com/review/viet/gb/cjabuc2b.jpg https://modelingmadness.com/review/viet/gb/cjabuc2b.jpg This looks like a decent starting point, http://www.aerospaceweb.org/question/aerodynamics/q0104.shtml http://www.aerospaceweb.org/question/aerodynamics/q0104.shtm...