Originally intended to rely heavily on existing equipment, largely based on the Shuttle, nothing is going that way:
Beyond the much publicised CLV solid-rocket motor oscillation problem, other issues for Ares I include pocket buckling in its upper-stage liquid hydrogen (LH2) tank, an immature first-stage forward skirt avionics box design, protection for parachutes against the interstage's shaped linear charge separation system and first-stage thrust vector control (TVC) changes.I expect this to be both behind schedule and over budget, again.
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