Three Stage System to Orbit

John Powell, JP Aerospace, created the system to space. Only the last stage is left untold, the release of the Orbital Transfer Vehicle (Space Ferrycraft) from the wing of the orbital ascender. The ferrycraft climbs to a spinship in LEO, or is grabbed by a larger OTV, which hauls the ascender-released ferrycraft to, for example, a translunar spinship (aka, turnship) where mined space resources are refined. See, also, “The Space Trade Update” on Amazon. – Paul