If Romulan ships use singularity drives, shouldn't they implode and collapse into said singularity when destroyed, not explode?
Many Romulan war bids fight in tandem and in the beginning they did collapse. Since the Romluans relied heavily on cloaks in their combat maneuvers, the remaining fleet vessels were taking heavy damage from the collapsing drives near them, since many were not shielded at the time of implosion.
So these days there is a fail-safe attached to the drive, one millisecond before failure the drive is teleported..... as the ship destroys itself and the teleporter fails the singularity drive is just harmlessly lost in the pattern buffer. It is never teleported anywhere.
Nothing should explode in space in the manner they're displayed in science fiction.
STO-era ships tend to contain pressurized atmospheres and matter/antimatter reactors to power their warp drives. An uncontrolled matter/antimatter reaction usually results in a large release of energy. I'm not sure if a pressure-wave explosion would result, but canon seems to lead viewers that direction.
Originally Posted by tsurutafan01
What does a singularity have to do with it?
A singularity is a micro-black-hole. If a Romulan's singularity containment field fails, then the singularity's enormous gravity field would cause the whole ship to collapse on itself.
If they're using stellar mass black holes to drive their ships, then yes. Realistically speaking there aren't enough stellar mass black holes in the galaxy that we know of to power a fleet of ships. It's far more likely that they're using artificial black holes with the mass of a small asteroid rather than an entire sun. In this case the singularities wouldn't be stable enough to exist outside of some form of containment. So, they should violently explode when containment is breached or lost.