This is the 11.1 compatible version of my Orbital Jumper, found here: http://kerbalspaceprogram.com/forum/index.php?topic=2820.0 [Works in 10.1, but I do not know about 11.1] Requires latest version of C7\'s Flight Pack, not including Hardpoints. It can make orbit with ~2/3 of its fuel left, leaving you with enough delta-vee to circularize and de-orbit. It has no RCS, but future versions may. Climbing with your velocity indicator at 45 degrees with 150 m/s speed should put you into orbit easily. You can also cruise at a minimun speed of 85 m/s with your velocity reticule on the horizon, but I\'ve gotten it down to 76 m/s. The only problems I have had with this craft is its tendency to go into uncontrollable end-over-end flips if you pull up or drop the nose too fast. I have also never sucessfully landed it, though that might be due to my poor piloting skills. Improvements over 10.1 version: -Much more fuel into orbit. -Fairly low cruising speed. Improvements to this line of spaceplanes: -Rocket assisted takeoff could improve fuel economy by a small amount. -Drogue chutes could allow for landings. -RCS for orbital maneuvers.