Perhaps. But if you look at most UCAVs, they mostly have 'broadly normalish' looking shapes. XQ-58 for example is relatively conventional looking. I think the

Perhaps. But if you look at most UCAVs, they mostly have 'broadly normalish' looking shapes. XQ-58 for example is relatively conventional looking. I think the reality is that there are a lot of advantages of the 'normal' airplane shape that removing the pilot doesn't drastically change. Warplanes are going to have some pretty high mass, kinda bulky thing to manage (especially engines and radar). Keep those close to the center of mass is just... sensible. Since your flying forwards, that biases you towards either a tube with wings or flying wing. Pure flying wings are apparently kinda annoying to deal with - especially when what you're working on is trying to innovate in autonomous systems, maybe you don't want to spend extra effort trying to conquer too unconventional structural layouts.