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space station info >> space station
Space Station
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Introduction
of NASA
Before the end of the next decade,
NASA astronaut will again gain their way to the
surface of the moon. And this time, we're going
to stay, building outposts and paving the way
for eventual journeys to Mars and beyond. There
are echoes of the iconic images of the past, but
it won't be your grandfather's moon shot. This
journey begins soon, with growth of a new flying
saucer. Building on the best of Apollo and shuttle
technology, NASA's creating a 21st century examination
system that will be reasonably priced, reliable,
flexible, and protected.
The show piece of this system
is a new spacecraft designed to carry four astronauts
to and from the moon, support up to six crew members
on future missions to Mars, and bring crew and
The new crew vehicle will be shaped like an Apollo
capsule, but it will be three times larger, allowing
four astronauts to travel to the moon at a time.
The new spacecraft hsupplies to the International
Space Station.
as solar panels to provide power, and both the
capsule and the lunar Lander use liquid methane
in their engines. Methane is used because NASA
is thinking ahead, preparation for a day when
potential astronauts can convert Martian atmospheric
resources into methane fuel.
The new ship
can be reused up to 10 times. After the
craft parachutes to dry land, NASA can easily
recover it, replace the heat shield and
launch it again. Coupled with the new lunar
Lander, the system sends twice as many astronauts
to the surface as Apollo, and they can stay
longer, with the initial missions lasting
four to seven days. And while Apollo was
limited to landings along the moon's equator,
the new ship carries enough propellant to
land anywhere on the moon's surface.
Once a lunar settlement is established,
crews could remain on the lunar surface
for up to six months. The spacecraft can
also operate without a crew in lunar orbit,
eliminating the need for one astronaut to
stay behind while others explore the surface. |
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Safe
and reliable
the launch system that will get
the crew off the ground builds on powerful, reliable
shuttle propulsion elements. Astronauts will launch
on a rocket made up of a single shuttle solid
rocket booster, with a second stage powered by
a shuttle main engine.
A second, heavy-lift system uses a pair of longer
solid rocket boosters and five shuttle main engines
to put up to 125 metric tons in orbit -- about
one and a half times the weight of a shuttle orbiter.
This versatile system will be used to carry cargo
and to put the components needed to go to the
moon and Mars into orbit. The heavy-lift rocket
can be modified to carry crew as well.
Best of all, these launch systems are 10 times
safer than the shuttle because of an escape rocket
on top of the capsule that can quickly blast the
crew away if launch problems develop. There's
also little chance of damage from launch vehicle
Sketch
In just five years, the new ship
will begin to ferry crew and supplies to the International
Space Station. Plans call for as many as six trips
to the outpost a year. In the meantime, robotic
missions will lay the groundwork for lunar exploration.
In 2018, humans will return to the moon. Here's
how a mission would unfold:
A heavy-lift rocket blasts off, carrying a lunar
Lander and a "departure stage" needed
to leave Earth's orbit (below left). The crew
launches separately (below, center), then docks
their capsule with the Lander and departure stage
and heads for the moon (below, right). Three days
later, the crew goes into lunar orbit (below,
left). The four astronauts climb into the Lander,
leaving the capsule to wait for them in orbit.
After landing an exploring the surface for seven
days, the crew blasts off in a portion of the
Lander (below, center), docks with the capsule
and travels back to Earth. After a de-orbit burn,
the service module is jettisoned, exposing the
heat shield for the first time in the mission.
The parachutes deploy, the heat shield is dropped
and the capsule sets down on dry land (below,
right).
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Into
the Cosmos
With a least amount of two lunar
missions per year, impetus will construct quickly
toward a permanent outpost. Crews will stay longer
and be trained to exploit the moon's resources,
while Landers make one way trips to transport
cargo. Eventually, the new system could go just
about crews to and from a lunar settlement every
six months.
Planners are by now looking at
the lunar South Pole as a applicant for an settlement
because of concentrations of hydrogen thought
to be in the form of water ice, and an abundance
of sunlight to provide power.
These plans give NASA a huge
head start in getting to Mars. We will already
have the heavy-lift system needed to get there,
as well as a versatile crew capsule and propulsion
systems that can make use of Martian resources.
A lunar outpost just three days away from Earth
will give us needed practice of "living off
the land" away from our home planet, before
making the longer trek to Mars. As President Bush
said when he announced the Vision for Space Exploration,
"Humans are headed into the cosmos."
Now we know how we'll get there.
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