Ka-52 Helicopter

I built the Ka-52 for cut scens and a final boss battle. There are two variants shown below - one where the propellers are stationary, and one with a custom shader to simulate the propellers rotating in flight.

I made this custom shader in Unreal 3. A propeller blade image quickly spins clockwise, a duplicate image spins slowly counter-clockwise, and the two images are added together so the end visual mimics how our eye perceives propeller motion in real life.