052C is a cold launch, and the launcher has a certain angle with the hull (to the left and right sides of the hull). If the cold launch fails to ignite in time, the missile will not fall into the ship, but directly into the sea.

052D is a thermal launch, and the missile's solid motor has been ignited and started before launch, so there is no problem of falling, so there is no problem of falling after launch of 052D.

I hope I can help you!