MOON BASE
EPISODE II
Jamestown on the Moon
Cyrano first attempts to travel to the
Moon by strapping bottles of lighter-than-air dew to his body, but
after reaching the Middle Distance, he floats back to Earth, landing
among a tribe of naked Indians in New France. There he builds a machine
that eventually takes him to his destination, which no doubt goes to
show that America has always been the ideal place for moon launchings.
(Paul Auster)
There
is plenty of reference to exploration in Washington DC. The District of
Columbia pays an obvious tribute to the discoverer of the new world.
Jamestown, the first English settlement in North America, is only a
couple of hundred miles south, at the very end of the Chesapeake Bay.
Downtown Washington, across The Mall, the Space and Air Museum displays
the most impressive collection of flying machines ever built: from
wooden planes with fragile canvas wings to the Spaceship One - whom
just succeeded in performing two sub-orbital flights in a row, thus
paving the way for space tourism. All sort of rockets and spacecrafts
used in fifty years of automatic and manned space missions are also
either hanging from the ceiling or raising high above the floor. At the
entrance, an Apollo capsule with burnt shield and a lunar rock sample
welcome visitors from all over the world.
Here, close to the barycentre of the
United States, an evening event celebrated the successful organization
of the second Moon Base Conference. The NASA Administrator’s speech was
followed by the IMAX projection “Magnificent Desolation”, displaying
through spectacular views of the lunar surface and of the moonwlkers
the major achievement of the Apollo program.
During the Washington workshop
contributions focused on the way in which a lunar permanent outpost
could be realized: space transportation, transfer trajectories, life
support systems, health hazard, in-situ resources utilization,
scientific experiments and infrastructures. Last but not least the
financial and economic framework needed to sustain a long-term manned
lunar exploration program. In short, Jamestown-on-the-Moon, as the
lunar base was provisionally christened, started to take shape under
realistic assumptions.
Radiation hazard during the flight to
the Moon (mostly outside the sheltering action of the Van Allen Belts)
and on the lunar surface is a major concern. Unpredictable solar flares
represent a threat difficult to handle: the ’72 event, occurring
between the Apollo 10 and 11 missions, could have had catastrophic
consequences. Although quick transfers (3-4 days) still represent the
safest way for humans, novel orbital paths connecting the Earth and the
Moon are now available. The stable/unstable manifolds approach and the
so-called weak stability boundary (WSB) trajectories exploiting the
chaotic regions associated with the collinear lagrangian points,
provide long-duration fuel-sparing alternatives to be used for
maximising the payload mass on board automatic cargo servicing missions.
On the lunar surface, peculiar
geologic features (e.g. lava tubes, small craters) could ease the
effort of building up radiation resistant thick walls and ceilings.
Surface manned activities could greatly profit of astronaut “armours”
and of cooperative robotics for performing the many different tasks
involved in ruling a fully operational lunar base.
Among
the enabling technologies, harnessing the Moon’s resources is mandatory
for lowering the dependence from Earth. Self replicating automata, made
out of the same material they contribute to manufacture provide the
ideal answer. The construction of power plants for energy production,
either solar or based on He3 nuclear fusion, and factories for
extracting oxygen and other elements from the lunar regolith represent
a more traditional, yet still valid approach.
The celebrated experiment of “the
hammer and the feather” performed live by the Apollo 15 commander David
R. Scott back in 1972, is a striking example of the benefits of doing
science on the Moon. In this respect scientific applications can be
divided into three broad categories: science of the Moon, science on
the Moon and science from the Moon. The latter foresees the
construction of a condominium of astronomical observatories: the
absence of atmospheric disturbances or diffusion and the low lunar
gravity will presumably allow optics technology to face unprecedented
challenges. The electromagnetically noiseless environment of the far
side of the Moon is the dream come true for radio astronomy. Both
projects link up well with the studies carried out for providing global
telecommunication networks and advanced remote control techniques
(telepresence).
Cultural contributions have
been also acknowledged. The Alexandra Archive deals with the
possibility of safely storing on the Moon the whole body of knowledge
achieved by mankind, thus preserving it against “Earthly” destruction.
The implementation of a Moon Base knowledge and imagination portal
could undoubtedly foster lunar exploration.
Coming down to more practical issues,
it is clear that the present feasibility and the future development of
Jamestown-on-the-Moon depends upon the level of resources allocated by
the international community. Roadmaps and budgetary exercises have been
therefore discussed. The completion of large on-going space programs
such as the Space Shuttle and the International Space Station will
presumably free a significant fraction of NASA and ESA budgets, thus
making exploration programs more affordable. Moreover government and
private interests can participate at each step in the lunar activity
value chain, opening a somewhat different scenario also from the
stakeholder’s viewpoint.
As far as programmatic aspects are
concerned, the optimistic view still prevails: if the first child born
on the Moon will be an historical event, then the mother is already
alive on planet Earth
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