More cool stuff out this afternoon.
"The concept seems to border on science fiction. It envisions a behemoth mother ship with twin, narrow fuselages, featuring six Boeing Co. 747 engines attached to a record 385-foot wingspan, plus a smaller rocket pod nestled underneath. Expected to weigh roughly 1.2 million pounds, the combination would roughly match the maximum takeoff weight of the largest, fully loaded Airbus A380 superjumbo plane, but the wings would be more than 120 feet longer that those of the Airbus A380."
Read more:
http://online.wsj.com/article/SB10001424052970203518404577096493595261190.html#ixzz1gS6yGqmn