Recently NASA wind tunnel testing has confirmed what many eccentric aircraft and aerospace engineers have been saying for decades. And that is blended wing body aircraft are as much as 30% more efficient due to lower co-efficients of drag. Some may think that the flying wing concept is something totally new and innovative yet in review we find drawings and prototypes that go back decades.
And well some really old stuff, dating way back to WWII and Jack Northrop. And if you really want to be tricky and call question to the efficiency of the flying wing and the earliest designs here is one, which will throw you for a loop; the Egyptians had pictures of what looked like flying winged aircraft on their walls.
A flying wing has many other neat aspects to it. That much wing sure plays well for eddy vortex lift and use. One would think that many who design these things are missing out on other cool possible aspects as well. For instance take thrust vectoring jets at just below the c.g. on top of the wings and put the aircraft into a high angle of attack 35-40 degrees and thus you have put the energy against the c.g. pushing it against the top of the wing rather than the thrust pushing it from the bottom of the wing as most designs show. You could have extremely short take off rolls and very efficient climb outs. The rates of climb would also significantly keep noise away from sensitive neighborhoods around airports.