See also the similarly-configured LEAPTech model: http://spectrum.ieee.org/tech-talk/aerospace/aviation/nasas-newest-xplane-will-fly-with-18-electric-motors htt

See also the similarly-configured LEAPTech model: http://spectrum.ieee.org/tech-talk/aerospace/aviation/nasas-newest-xplane-will-fly-with-18-electric-motors http://spectrum.ieee.org/tech-talk/aerospace/aviation/nasas-... That one doesn't do VTOL but there are apparently nontrivial efficiency gains from that configuration even without tilting the wings. If you could get enough efficiency gains from the reduced wing loading to offset the weight of the wing tilting apparatus you could effectively get VTOL 'for free' (maybe, I don't know jack about aerodynamics).