Blue Max Studios: Of Tall Ships and Trading Posts
You know what, RocketFans? It's been entirely to long since we've had some honest-to-Heinlein speculative worldbuilding around this blog. Let's fix that, shall we? So I was perusing that clearing house for all things Hard SF, Atomic Rockets, and came across a wonderful design for a cheap, reusable interplanetary spacecraft with the romantic name of Spacecoach.
Some Actual Speculation...