The Ares I and Ares V, both cancelled in October 2010, were the proposed boosters for the Constellation Program. The Constellation Program was to be the follow-on to the Space Transportation System (space shuttle) retired in 2011.

Ares I-X High Level Drawing (click to enlarge)

Ares I-X Flight Test Vehicleu (pdf)

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More detailed information can be obtained by reading the America in Space page dedicated to the Ares.