I have pictures of the "Vepr" showing beyond all doubt it too has the prop, not a pumpjet. The "Kugar" has been quite hard to find information on.
Does not matter, I have pictures of a russian pumpjet and will adapt to my hull. If I cannot prove the Akula pumpjet, I will build one anyway. Be a killer "what if" boat.
As for the reduction setup, it is interesting to see which way to go. May have to experiment mechanically after it is built, but good logic and math applied here will probably hold true on the finished product. Is there a formula for determining ideal thrust,ratios,draw,etc?
As for information on russian boats, I may be announcing some really cool news in the near future as I have dug up more stuff.
SubCommittee Vice President 2006-2008
Author-Russian Submarines, Guardians of the Motherland
Member-Saint Petersburg Russia Submarine Club