Captain Kruger wrote:As for the quantum singularity, I've been thinking it might not be such a huge advantage over M/AM. In the TNG episode where Data explained the warbird's power source, Picard didn't seem like he felt particularly threatened by it. Romulan starships used to be weak in Kirk's era compared to their Klingon and Fed counterparts, so the QS might just be desperate overcompensation on the Roms' part.
There are advantages and disadvantages to the quantum singularity power source. One of the chief ones is that you can use just about any matter to dump into the mass to sustain it. This means a Romulan Warbird can essentially "refuel" itself off of anything anywhere; interstellar gas and dust, asteroids pulverised into dust, cometary debris, gasses skimmed off the top layers of Jovian-type planets, lunar dirt, anything that happens to be on hand wherever the ship is.
The biggest disadvantage to the quantum singularity power source is that quantum black holes don't last very long. Bodies which mass less than 2150 metric tons have lifetimes of less than a second, and ones massing only one metric ton lifetimes measured in only billionths of a billionth of a second. And the smaller a quantum black hole is, the more mass you have to dump into it to keep it sustained for any useable lifetime, because Hawking decay is constantly working to evaporate the thing. And when a quantum black hole expires, it does so with a massive burst of gamma radiation.
The smallest quantum black hole which could be sustained for any truly useable length of time would be one massing 670000 metric tons (measuring 9.9E-17cm. in radius), which would take a year to evaporate. A constant matter feed of 21.26 g/sec would be sufficent to counterbalance the decay rate and maintain the singularity's mass, and the Romulan Warbird could regularly collect matter to keep its feeder mass reserve up to stock.
Theoretically, a 670000 tonne quantum singularity should produce the equivalent power of a 52000TW nuclear reactor, assuming 100% efficency of course. But since Romulan warpdrives and weaponry do not appear to be any more powerful than their Federation and Klingon analogues, it can be reasonably surmised that the Romulans are getting horrible efficency from their system.
The only real advantage I can see from the Romulans adopting quantum singularity power sources for their starships is that it dispenses with the fuel processing and transport infrastructure which the other Alpha Quadrant powers must rely upon to sustain their fleets, and also that their ships can essentially "live off the land". Perhaps the Romulan Empire ran out of dilithium, which is essential to Federation and Klingon M/AM based power systems (and which they still seem to possess in sufficent supply) and this necessitated finding an alternate power source to sustain their fleet in the field.