It goes without saying that "riding roller coasters in Russia" was one of the more interesting things I've done. Also interesting because this park was so nice! Well landscaped and the rides seemed to all be in really good shape. I wasn't really expecting that. Actually had a really good time at this park!
I believe it actually IS called the Rocket, and there is another one on the fair circuit where there are multiple rockets that go up a tower StarFlyer style (like you referenced). They're made by Funtime, the same people that do Sling Shots and the Snake chaos pendle ride that we had time on at Grona Lund.