when a helicopter approaches the ground quickly if you increase the speed of the blades and a certain speed is an effect of air mattress.

The helicopter seems to bounce on a air mattress.

I have seen this effect in games like Battlefield 3 and do not understand how or Arma 2 and 3 have that effect weapon.

I consulted this situation with pilots who play regularly and we surprised them much an arcade game clearly has this feature and not a simulator.

I think it would add a large element of realism to the game.