DC-3 was a fully reusable launch vehicle two-stage-to-orbit spaceplane Designed by Maxime Faget and was one of several early design proposals for the NASA Space Shuttle at the Manned Spacecraft Center in Houston.Various studies by North American Rockwell, McDonnell Douglas Astronautics and North American AviationReference for animation:A TWO-STAGE FIXED WINGSPACE TRANSPORTATION SYSTEMFINAL REPORTVolume II Preliminary DesignContract No. NAS 9-9204 Schedule IIbyMCDONNELL DOUGLAS ASTRONAUTICS
I'm surprised Boeing and Lockheed haven't come up with something like this. One do the booster and one the orbiter, and let ULA operate it.
There were several concepts like this, but NASA chose the Shuttle with solid boosters instead. In the long run, a two stage reusable rocket or space planes would have been cheaper to operate I would think. The booster plane especially would have cut the operating costs. Solids cost as much new as reusable. Then the shuttle expended the tank. Nothing would have been expended. The booster plane, if robust enough would have taken very little refurbishment to reuse. The upper orbital stage might have taken about the same refurbishment as shuttle. There would have probably been no Challenger explosion.I'm surprised Boeing and Lockheed haven't come up with something like this. One do the booster and one the orbiter, and let ULA operate it.