Heinlein
When will the Chinese run a high speed maglev rail launcher up the side of the Himalayas ? See end of "The Moon is a Harsh Mistress". Aside from that Shadow*, orbital or close missiles have been launched from under planes for years. Merkins sat killer was launched from an F15. Orbital Sciences also come to mind.
Given the sort of market this "hobby" rocket is aimed at, the cost of aerial boost is high and one can be sure aviation/space management will be anxious to control anything likely to go near low earth orbit, let alone higher.
Biting the hand that feeds IT
