franco wrote:The Russian Navy will receive two submarines of the Lada project in 2022
Two serial diesel-electric submarines of the fourth generation of Project 677 Lada - Kronstadt and Velikie Luki - will receive the Russian Navy in 2022, said Alexander Buzakov,
The submarines are the second and third in the project 677. The first in the project was the submarine "St. Petersburg" - it was transferred to the fleet for trial operation in 2010.
“The second, Kronstadt, is already afloat, the third, Velikiye Luki, will be launched in 2022. Kronstadt was delayed somewhat due to problems with contractors. But we plan to transfer both boats to the fleet in 2022, "Buzakov told RIA Novosti .
In September last year, the head of the United Shipbuilding Corporation (USC), Alexei Rakhmanov, announced the lag in the construction of two diesel-electric submarines of the fourth generation of Project 677 Lada due to problems with one of the equipment suppliers.
In this connection, it was decided to build for the Pacific Fleet six time-tested submarines of the 636 Varshavyanka project instead of the Lada submarines.
The first submarine of the Lada project, Saint Petersburg, was laid down in 1997 and launched in 2004. The submarine completed tests and entered trial operation in 2010.
Project 677 submarines (code Lada) are a series of Russian diesel-electric submarines developed at the Rubin Central Design Bureau.
The series is a development of project 877 "Halibut". Submarines are intended to destroy enemy submarines, surface ships and vessels, to protect naval bases, sea coast and sea communications, as well as to conduct reconnaissance.
Submarines with a displacement of 1.8 thousand tons are distinguished by a low noise level, can reach speeds of up to 21 knots and dive to a depth of 350 m.
There are plans to lay down two Ladas in 2022, but i very much doubt it. I still think the Ladas are a fiasco as the project has been active since 2004 and has been prone to failure after failure and redesigns.
I think they should concentrate on the Kalina project, and in the meantime order 636.3 subs.
The fact that they still doesnt have a working AIP in either the Kilos or Ladas is mindboggling, to say the least. Sweden had their first AIP operating sub in 1988. I write it again, 1988.
The Swedish shipbuilder Kockums constructed three Gotland-class submarines for the Swedish Navy that are fitted with an auxiliary Stirling engine that burns liquid oxygen and diesel fuel to drive 75 kW electrical generators for either propulsion or charging batteries. The endurance of the 1,500-tonne boats is around 14 days at 5 kn (5.8 mph; 9.3 km/h).
The new Swedish Blekinge-class submarine has the Stirling AIP system as its main energy source. The submerged endurance will be more than 18 days at 5 knots using AIP.
Realize that both the Lada and Kilo is totally outclassed in endurance term, which makes them alot easier to detect and destroy.
Hopefully the russian AIP can be retrofitted to both Kilos and Ladas, when its finaly ready, when that may be is an open question.
AIP general info
The main reason behind adopting AIP systems is to increase a submarine's stealth by eliminating noisy snorkelling and remaining in contact with the atmosphere. The benefits of added stealth outweigh the increased cost of the submarine over its life cycle, stringent requirements for the infrastructure and crew training.
From both a theoretical and practical point of view, it is clear that none of today's AIP plant types are ideal in all respect; each has its merits and drawbacks. Besides, none of the navies have similar conditions. Each navy performs its tasks, operates in different geographical zones, and has varied level of crew training and conditions at naval bases.
Irrespective of all theoretical diversity of possible AIP types, the experience of recent years has shown that only two types of AIP systems are in demand in the market - Stirling AIP system and fuel cell AIP system. As for the closed cycle steam turbine MESMA, it has shown its practicality but has remained a niche product. Other exotic types of AIP plants have also remained on paper or in laboratories.