Triode
Posts: 283
Joined: 9/26/2014 Status: offline
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about project 971 submarines variants in database : project 971M have two entry in database #34 - PLA-971M Akula II for 1995 #625 - PLA-971M Akula II for 2005 problem is , project 971M is name for modern upgrade for all pr.971 subs and first 971M submarine will be K-328 "Leopard" in 2017 (well, december 2017 ,so it can be 2018 ) in this upgrade: new sonar system MGK-540M "Kizhuch" (deep upgrade of MGK-540"Skat-3") http://www.e-disclosure.ru/portal/FileLoad.ashx?Fileid=1092043 ("Okeanpribor" annual report,in russian) new periscope systems "Parus-98" http://elektropribor.spb.ru/en/newprod/rekl2014/parus.pdf Kalibr complex and new torpedoes(UGST, maybee UET-1) So, I think pr.971M should go to 2018 and recive all this things above In database passive signatures of pr.971 Akula and pr.971 Imroved Akula are the same Improved Akula should be less noisy than Akula, like Improved Los Angeles > baseline Los Angeles also about project 885, #405 - PLA-885 Severodvinsk [Yasen, Granay] in database and project 955, #136 - PLARB-955 [Borey]in database, I think accoustic signatures for this submarines is wrong, they shoul be less noisy from Russian Akademy of Science journal "Fundamental and practical hydrophysics" 2012-5-2 "Parkhomenko V. Parkhomenko VV Reducing the noise of domestic nuclear submarines in the period from 1965 to 1995" http://hydrophysics.info/wp-content/uploads/2014/02/%D0%9F%D0%B0%D1%80%D1%85%D0%BE%D0%BC%D0%B5%D0%BD%D0%BA%D0%BE_2.pdf in russian Parkhomenko is Captain 1 Rank from Protection Service of ships physical fields of Russian Navy I - first generation , projects 627(A), 645, 659T, 659, 675 II - second generation, projects 671(RT),705(K), 661, 667AT, 670, 667(A,AU,B,BD,BDR) III- third gen , projects 671RTMK,685,945(A),971, 949(A),941 IV - fourth generation projects 885, 955 as you can see project 885, 955 should have 15-18 dB advantage over 971 and 945 in VLF
< Message edited by Triode -- 4/19/2016 6:12:27 PM >
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