SINGLE STAGE TO ORBIT

External Tank Derived Heavy Lift Launcher (ETDHLL) is 50.8 meters long
and 8.4 meters in diameter. It masses 26.5 metric tons of structure
and carried 760.0 metric tons of propellant (629.24 MT LOX, 106.26 MT
LH2) The vehicle is equipped with an aerospike engine built around
three RS-68 pump sets with a total mass of 19.8 metric tons and
producing 1,031.4 metric tons of thrust with an Isp of 468 seconds.
It carries 50 metric tons of payload (double that of the Space
Shuttle) in an stretched inter-tank region that is 8.4 meters in
diameter and 10.8 meters in length (twice the volume of the space
shuttle) There is also 20.2 metric tons of added thermal protection
and fold-away wings to allow the empty stage to operate as a glider.
The system is fully reusable 2,000 times.

TWO ELEMENT TWO STAGE TO ORBIT

Equipped with Cross Feed a two element two stage system is made. The
booster element feeds propellant to the orbiter element at lift off.
This vehicle carries 157.2 metric tons to orbit in a 33.9 meter long
inter-tank region in the orbiter. Thus, the booster element is
73.9 meters long while the booster element is 46.9 meters long. The
system is fully reusable 2,000 times.

THREE ELEMENT TWO STAGE TO ORBIT

Two outboard booster elements feed propellant to a central stage at
lift off. The booster elements are 46.9 meters long while the orbiter
element is 101.7 meters long. The vehicle carries 253.9 metric tons
payload.

SEVEN ELEMENT THREE STAGE TO ORBIT

A central element operating as a third stage is fed at launch by two
outboard elements forming a second stage. Each of the second stage
outboard elements are each fed by two additional outboard elements
creating a first stage. The four first stage elements are drained
first, the two second stage elements are drained next. These six
booster elements are each 46.9 meters long while the orbiter element
is 186.8 meters long. The vehicle carries 648 metric tons to
orbit.

MISSIONS

SINGLE LAUNCH MARS ROUND TRIP

The 648 metric ton element , 41 meters long, carries 6.1 metric tons
to Mars surface and back, reusing the spacecraft.

DUAL LAUNCH MOON ROUND TRIP

The 648 metric ton element, 41 meters long system transfers 583.6 tons
of propellant to the two element two stage launcher orbiter on orbit.
The orbiter carries 105.5 tons to the moon and back returning the
spacecraft.

DUAL LAUNCH MARS ROUND TRIP WITH IN-SITU REFUELING

The 648 metric ton element, 41 meters long system transfers 583.6 tons
of propellant to the three element two stage launcher‘s orbiter
carrying 253.9 metric tons of payload. The vehicle lands 253.9 metric
tons on Mars’ surface. Once there, 583.6 tons of propellant is made
on Mars surface from local water supplies and solar energy. 156.4
metric tons of payload is left permanently on the surface of Mars
while 97.5 metric tons of payload is returned to Earth, along with the
vehicle, which may be reused 2,000x.