Delta v

NASA mulls L-2 research/space station

How would an L2 space station be built?

Modules for the space station, either based on hard skinned International Space Station Modules and/or with inflatable modules being developed by Bigelow Aerospace for a proposed private space station, would be lifted to L2 with the heavy lift space launch system, They would likely be assembled in low Earth orbit and then boosted to the L2 point, likely with an electric ion rocket tug. Astronauts would then visit the L2 space station periodically on an Orion Multi Purpose Crew Vehicle boosted by an SLS heavy lift rocket.

From: sraj
Sent: Wednesday, February 15, 2012 12:07 PM
To: spacesettlers@yahoogroups.com
Subject: [spacesettlers] : Delta v

Some possibilities for space habs orbiting Earth.

1. In low orbit they would need to be regularly boosted up. Tried to find
out the delta v requirement for ISS (orbiting at 330 - 410 Km); could not
get the information from the net. Apparently hydrazine thrusters (attached
to visiting space crafts) are used for the purpose.
2. For earth observation satellites orbiting at around 800 Km, the delta v
requirement is around 1-2 m/s/year
3. For geosynchronous satellites 45 m/s/year
http://en.wikipedia.org/wiki/Orbital_station-keeping

I was wondering whether it would be possible to assemble a space hab at 400
km altitude and then slowly boost it to an orbit of 800 km. The resources
of ISS could then be used.

Regards,
Selvaraj