the plane structure is all carbon/CFRP. you can see in the earlier pictures in the hangar before. http://www.stratolaunch.com/gallery.html http://www.stratolau

the plane structure is all carbon/CFRP. you can see in the earlier pictures in the hangar before. http://www.stratolaunch.com/gallery.html http://www.stratolaunch.com/gallery.html the black is cfrp under the white paint. Scaled Composites has some secret CFRP processes of construction which non Americans are not allowed to know about under ITAR regulations, so i cannot tell you haha.