  A novel concept of orbital launch system in which all stages are reusable is
presented. The first two stages called Midpoint Delivery System (MPDS) deliver
the next stages to a midpoint. A midpoint is defined by an altitude of 100 $km$
to 120 $km$ and horizontal velocity of 2.8 $km/s$ to 3.2 $km/s$. MPDS stages
decelerate in the atmosphere and perform vertical landing on barges. These
stages can be reused daily for many years. The payload is delivered from the
midpoint to a 400 $km$ Low Earth Orbit by one or two stage rocket called
Midpoint to Orbit Delivery System (MPTO). All of MPTO engines are delivered to
LEO. These engines do not return to Earth themselves. They are returned to
Earth in packs of 50 to 100 by a Reentry Vehicle. Overall, the fully and
multiply reusable launch system should deliver payload to LEO for \$300 to
\$400 per $kg$
