Dec 272011
A photo from a NASA report showing the tail end of a B-70, with engine #3 removed. The B-70 was a carefully shaped vehicle, every line and curve designed to let the beast of a bomber cruise at Mach 3+. But the engine bay was basically just six square holes in the back that the engines were stuffed into.
At Mach 3, fairing in those gaps just wouldn’t have been worth the bother.
