ORIGINAL: Tall Paul
Fun flies and 3D planes do this every day now..... they just don't do the "L" part since they lack a support. And the AMA might quibble...
The technology is here.
Any plane that can fly up from a release can also fly backwards down...
AMA won't quibble... if the wheels are all at the back... that's the landing gear. If the wheels are on the bottom... that's the landing gear. If you have wheels on the bottom and the top and the back... land any way you want.
Someone made a SPAD PBF with a X formation (essentially 2 pbf's affixed by connecting the square wings at 90 deg to each other right down the centerline)... just for VTOL. Works for the take off and landing... kinda hard to do anythig else with it. Maintaining orientation to which way is up is a pain, even with 4 colors of Coro.