Garry, we are not small children and don't write to me about the Il-114 RC plane. That toy has a maximum weight of 23.5 tons and is a twin-engine airplane, which means that even a four-engine variant would not have enough engine thrust for an airplane with a maximum take-off weight of up to 50 tons.
They already made the Il-114MP, it was not accepted AFAIK because its range was too short but its endurance of 10 hours in the air on patrol which is ONE hour less than the Il-38 can currently manage with its 11 hour endurance, so the toy plane before modification is almost able to match the endurance of an aircraft three times heavier than it is at about 66 tons MTOW.
An enlarged Il-114... what ever they might decide to call it... with four rather more powerful upgraded engines should be able to blow the Il-38 out of the water in terms of endurance at the very least.
A power increase of maybe 750hp per engine would give it the same engine thrust the AI-20M engines of the Il-38 have at 4,250hp, which would mainly be used for takeoff... flying around at top speed is not something MPAs do very much because 500km per hour is good enough most of the time... the most powerful versions of the engines used by the Il-114 are 3,500hp, while the standard engines on the Il-114P are 2,750hp each.
I wrote to you that the 4 engines from the Il-114 aircraft (the maximum permissible take-off weight is 23.5 tons) do not have enough thrust to propel an aircraft weighing up to 50 tons, let alone a significantly more serious platform like the Il-38 which has over 66 tons.
they have said their new MPA aircraft to replace the Il-38 will have four engines... they did not specify which four engines they would be and it has already been mentioned that new 4-5,000hp engines are being developed too... not to mention if they were really pushed they have the engines of the Bear at 15,000 hp they could use if they wanted too.
Issues like the length of the blades being a problem could be solved... the 4m blades are needed for very high subsonic flight speeds so a new propeller with 8 blades on the front fan and perhaps 10 blades on the rear fan could absorb all that engine power and provide enormous thrust at lower flight speeds where needed.
They have not released very much concrete information which leaves things open to speculation... suffice to say they are talking about a replacement for the Il-38 May... for which we should be thankful... it was a good aircraft but in need of replacing now.
All those other complaints about lack of submarines, so what... you are upset... big deal.
Russia needs surface ships that can protect their merchant fleet and the fleets of their allies to ensure uninterrupted trade with Russia.
Submarines are not that useful in that regard... they are most effective when they are not seen and most effective when sinking ships... which is an act of war which makes their use as limiting as the use of nuclear weapons.
You should have them but hope to never have to use them.
In comparison even a corvette can fire a burst of 30mm cannon shells into the water to scare away western ships up to no good.
What western frigate or destroyer will mess with a Russian Corvette that might be carrying Onyx or Zircon...
The Russians have already lost the Il-112, which means that a potential four-engine turboprop aircraft, which must have SIGNIFICANTLY more powerful engines than the twin-engine Il-112, is out of sight.
The Il-112V is moving forward and has not been cancelled because it is required to replace several obsolete Antonovs in Russian military service.
The Russians are getting near to completing development of a 5,000hp turboprop engine and they also make the engines for Bear bombers that are 15,000hp.
They also had the NK-93 ducted fan design that Kuznetsov was supposed to be reviving in 2014, and a range of other engine types based on PD types could be used as the core of a turboprop engine or propfan variant.
IIRC one of the reasons for restarting Il-114 production (and in Russia itself not Uzbekistan), was exactly to have a platform some government and military variants, including naval use
The Il-114 and Il-112 will replace quite a few obsolete light aircraft, but they wont replace everything with them either.
I rather suspect they will replace the larger types like the Il-20/22 and Tu-154M and Yak-40 types with heavier aircraft too... they now have Tu-204 and variants in mass production filling gaps in airlines in Russia to replace western types, but once they are finished and the Super Jet and MS-21s are in full production and can replace the Tupolevs it is rather likely they might sell them to the Russian military to convert to military types and also start work on the Tu-330 transport plane based on those aircraft. A 35 ton payload capacity aircraft would be rather useful in Russia and around the world...
Most of the issues centre around getting the engines ready and mature for use in aircraft and a brand new modern engine and make an old airframe almost as good as a brand new design.
They even managed to improve the Yak-40s performance by using a composite wing.... as composites become more affordable and accessible things are going to improve even for older aircraft types.