[Doohickey]

I think SU-30's need a ramp.

[Tallguy]

I think SU-30's need a ramp.

Pretty sure that you're right for 2 reasons:

1. Russian carriers use ski jumps, and
2. The Russians have sold them to the Indians, and to date, Indian carriers use ski jumps (at least the new ones do).

[Trinity5]

"I think SU-30's need a ramp."

That has nothing to do with the aircraft itself, but the ship it's lauching from. SU-27s and 30s take off from normal runways all the time without the "aid" of a ski ramp. It has to do with the size and length of the carrier. Neither Russia (Soviet Union) nor India has a full length carrier like we do.