Ah, it's just that RKA stands for России Federal'noye kosmicheskoye agentstvo Rossii (FKA), which the Russian language's equivalent of an 'F' is an 'R'. Making it RKA.
Also, there is a game called 'Project R-7', which simulates Russian Spaceflight.
I thought your name was a mix of the two 'ProjectRKA', easy mistake to make.