SnAkE_OnE dijo:con el sistema nuevo de Pumpjet :)
Que es eso??
SnAkE_OnE dijo:con el sistema nuevo de Pumpjet :)
The Russians appreciate the design advantages of pump jet propulsors. The same math and physics work in both the former east as well as the west. Pump jets are indeed heavier, but so much quieter. The big advantage pump jets offer is providing the submarine with a higher tactical 'silent speed'. A conventional propeller submarine may have a silent speed of 7 to 9 knots, the pump jet submarine much higher - speculating in the 'teen' speeds or more. On the new American Seawolf, the British Trafalgar and Swifture SSN's - the reactor power plant cooling circulation pumps, a potential source of radiated noise can be switched off. Water sea suction intakes in the leading edges of the horizontal sternplanes on the SSN's then can provide cooling circulation by the forward motion of the vessel through the water.
Pump jets are very impractical on diesel conventional powered submarines. The added weight and cost is worthless if the batteries (or even present day fuel cells) of a conventional powered submarine cannot sustain those higher silent speeds a pump jet could exploit for very long. Nuclear power you can sustain those speeds for literally years. This is why you see pump jets only on nuclear powered combatants, and if ever on diesel submarines at all, it is for experimental tests of short duration runs only. Hence the Kilo test boat - 877V project design.
Marcos dijo:Rusia botó hoy el primer Pr 955 "Borei", el Yuri Dolgorukiy, se espera entre en comisión el año que viene...
Las fotos de momento no son de buena calidad, pero parece que introduce un pump-jet en lugar de la típica propela de 7 palas "hojas de sable"...
Algunos videos:
http://news.ntv.ru/107427/