It was hard for me to replicate a realistic Ares V and Ares I in KSP, so I went Mini! These adorable little rockets are more accurate representations of the Constellation rockets than I could do with Kerbodyne parts. First the Ares I: This one was the one I did after the Ares V, so it is a bit of a rush job with only a few pics.
On the pad. It kept blowing up without fins, so I had to put them. My upper stage is an Flt-400 tank with an LV-45 "swivel" engine.
The 2nd stage was really shaky, so I have no pic of it. Here is the mini Orion CSM pushing into orbit. It has roughly 2 km/s of Δv and can make it inot orbit from my Ares I with about 300 m/s of Δv.
Now for the Ares V:
Mini Ares V on the pad. Boasting 5.4 k/s of Δv without the KDS (Kerbin Departure Stage) it is not at all so "mini".
During Gravity Turn with 80% throttle limiter. Otherwise, it blows itself apart at 100% throttle.
SRBs gracefully fall away to safety, led by a thruster.
The first stage continues burning headed towards space.
Stage 2 in action. It has a probe core so it can take on a secondary mission, or deorbit.
Releasing payload. It's a mini lunar lander and KDS as would have been used in real constellation missions. This lander, however, cannot hold any crew and is quite indeed a worthless piece of space junk. Good thing it can deorbit (or strike the Mun. SCIENCE!!)