SamuraiBlue
Captain
how have you been, SamuraiBlue?
Future Submarines contract losers Japan, Germany, baffled by French company DCNS win
source:
An article by a newspaper company located in SA?
Not really. They share the same interest as ASC.
The part I find most perplexing is DCNS chief executive Sean Costello's comment.
Our offer does not propose nuclear propulsion for Australia at any time but the performance of the submarine we offer does inherit the technology of nuclear submarines,
I wonder if he even understands what he is saying, basically a nuclear powered sub and a conventional diesel powered sub has complete different energy envelopes so if you try to adopt various technology from a nuclear powered sub it would drain a diesel electric sub dry like the pump jet technology which I had questioned here and other forums coming to the same conclusion.
Pump jets are quiet when the screw is spinning at high speed but it has very little effect during low speed but requires more energy since the screw diameter would be smaller then conventional open screws. This is troublesome for a diesel electric powered sub since they are energy strapped forcing the sub to snorkel more often which completely compromise the stealth element completely defeating the reason in equipping a pump jet bell in the first place.