Altair Lander

The Altair spacecraft, previously known as the Lunar Surface Access Module or LSAM, is the planned lander spacecraft component of NASA's Project Constellation, which astronauts are to use for landings on the Moon intended to begin around 2019. Altair spacecraft will be used both for lunar sortie and lunar outpost missions.

From Wikipedia:

http://en.wikipedia.org/wiki/Lunar_Surface_Access_Module