How to get the centrifuge on LEO?

[Urvabara]

How to get the Mars space ship's centrifuge (diameter: ~20 meters) on LEO with Ares V?

The radiation shield (liquid water) between centrifuge's hollow walls has mass of 160 metric tonns, so probably the centrifuge has to be shoot on LEO without the water. Ares V's payload is "only" 130 metric tons. Maybe it's possible to use only 130 metric tons of water so that one Ares V is enough for the radiation shield.

There should be 8 "bed rooms" with doors for 8 people, showers and toilets in the centrifuge, because the centrifuge is the place where the astronauts/cosmonauts will be almost whole the flight time.

But how many Ares V vehicles is needed for the centrifure (diameter: ~20 meters, width: ~4.5 meters, volume: ~1414 m[tex]^3[/tex])?

How much energy is needed to spin this centrigure 6 RPM? Is this centrifuge beyond our engineering capabilities?

Thanks!

 

[Navin A S]

To get the centrifuge on to LEO with Ares V, you would need at least three launches. This is because the payload capacity of Ares V is 130 metric tons, and the centrifuge alone weighs 160 metric tons. You would need to launch the centrifuge in two launches, with the third launch carrying the radiation shield of liquid water between the centrifuge's hollow walls. The centrifuge would require a large amount of energy to spin up to 6 RPM. The exact amount of energy required would depend on the exact design of the centrifuge and the materials used. It is likely that the centrifuge would require several megawatts of energy to spin up to its target speed. This is well within the engineering capabilities of today, though it would certainly be a challenging project.