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HeyErdahl

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  • in reply to: torpedos question #2043713
    HeyErdahl
    Participant

    All I know is that they use Mitsubishi made Type 89 and Type 80 torpedoes. Navweaps have some info, but I assume you’ve already seen it: http://www.navweaps.com/Weapons/WTJAP_PostWWII.htm

    Yes, it is a good source of information. Info from Internet is traced there. I have written on one of Russian forums the data on torpedoes 53-65М and 53-65К, and they have appeared on Navweaps soon.

    However, if on Type 80 speed over 30 knots is quite authentic, on Type 89 – 70 knots – is not true. The best Russian electric torpedo USET-80 (TE-2) has speed up to 50 knots at range up to 20 km. Obviously close characteristics should have Type 89, that was coordinated to characteristics of torpedo Mk 48 mod. 4.

    Regards,
    Heyerdahl

    in reply to: torpedos question #2043835
    HeyErdahl
    Participant

    Has anyone info on modern Japanese torpedoes?

    The data available in the Internet are inconsistent.

    Regards,
    Heyerdahl

    in reply to: torpedos question #2048279
    HeyErdahl
    Participant

    I really don´t know what problem Brazil had concerning the Torpedo 2000 integration……What I know is that Brazil has ordered 30 Mk48 Mod7 just after the Torpedo 2000 contract cancellation.

    Probably, one of reasons against TORPEDO-2000 could be accident with submarine “Kursk”. Peroxide torpedoes demand careful service and the skilled personnel.

    in reply to: torpedos question #2048509
    HeyErdahl
    Participant

    Manufacturers and developers of torpedo weapon in Russia.

    1. Dvigatel Plant – developing and manufacturing
    2. Gidropribor Institute – developing
    3. Morteplotekhnika Institute – developing
    4. Dagdizel Plant – manufacturing

    Now all these firms are in process of association in one corporation

    5. Region Enterprise – developing and manufacturing

    Is part of Tactical Missiles Corporation

    If you are interested with more detailed information, write me by E-mail

    in reply to: The Advantage of a Mini Sub #2057103
    HeyErdahl
    Participant

    Thats using technology at least 15 years old.

    It would be quite straightforward to get the necessary processing power onboard a torpedo now.

    New Russian torpedo UGST has traditional algorithms of passive-active homing (subs and surface ships) and wake-homing algorithms (surface ships).
    Planar array with electronic scanning is added with complex of additional sonars. Probably such system cannot “be deceived” (soft-kill), only “to destroy” (hard-kill). But it is very, very difficultly.

    in reply to: Mine warfare #2057151
    HeyErdahl
    Participant

    Question for experts on MCM.

    In what term it will be possible to restore movement across Persian Gulf if Iran will lay large mine field? And what forces will be necessary?
    The area of the mine field – 100х20 nmiles. 500 modern bottom mines (a three-channel fuze) plus 1500 of ” false mines » (similar to a bottom mine).

    in reply to: The Advantage of a Mini Sub #2057156
    HeyErdahl
    Participant

    The future in covered mine laying, obviously, not for midget or mini subs, but for specialized UUV.
    If to imagine UUV, 200 miles having range and carrying 4-8 bottom mines. It uses GPS and can be started from any place of coast. Struggle against such system of mining will be very much complicated.

    The crew for midget subs is necessary only for decision-making on application of weapon.

    in reply to: The Advantage of a Mini Sub #2057257
    HeyErdahl
    Participant

    [QUOTE=GarryB]

    Only a nuke could hope to defeat a carrier with one shot. A dozen heavyweight torpedos would be the best conventional option… of course they don’t all have to come from the same mini sub.
    [QUOTE]

    However, even one heavyweight torpedo (300 kg charge) is capable to put heavy damages to big ship. Two (furthermore 4 ) torpedoes are capable to sink an aircraft carrier.

    Sonars and computers of the torpedo allow to achieve explosion under the bottom of the ship on distance of 6-8 m, than to cause enormous damage to all systems of the ship.

    in reply to: Mine warfare #2057324
    HeyErdahl
    Participant

    From the point of history view, experience of the Korean War is most interesting. It has shown, that mines can detain large landing operations. Mines become, thus, a strategic weapon. If North Koreans laid at Inchon of only 100-200 modern bottom mines, landing could not take place during necessary time. And war would go completely under other script…

    It is interesting, that the majority of the western experts are ready to discuss ” struggle against mines “, but not ” efficiency of the mine weapon “. Russia – the native land of sea mines and is given development of this weapon enough efforts.

    Mines can be used practically everywhere at depth less than 1 km. All depends on a target, an opportunity of laying of mines and an opportunity “to serve” mine areas (protection against investigation and sweeping, and opportunity of installation of mines in cleared areas).
    Mass laying of advanced bottom mines (depth of the sea – down to 100m) is most effectively. Their destruction can demand so much time, that movement of fighting and trading ships courts can be interrupted for significant time. Thus can be applied a plenty of ” false mines ” and UUV-killers . The cleared areas can be mined again with the help self-propelled mines and small underwater and surface vehicles. Persian Gulf is optimal for such mine war.
    For more deep-water areas mine-rockets are effective. At a rare mine laying and mass application of ” false mines ” the large areas appear are constantly dangerous to navigation

    in reply to: Take a look inside the Brazilian Sub Tikuna! #2064487
    HeyErdahl
    Participant

    On submarine Tikuna torpedoes Tigerfish MK24 Mod 1 (future MK-48 ADCAP 6) are established.

    Why Brazilian Navy refused to Saab Bofors Underwater Systems with TORPEDO-2000?
    Whether it is connected to torpedo fuel??

    in reply to: torpedos question #2065954
    HeyErdahl
    Participant

    Anyone have more info on Russian torpedoes?

    Russia has good traditions in the torpedo weapon.
    Were especially good (for that time) anti-surface-ship torpedoes 53-65М (up to 70 knots, peroxide of hydrogen), 53-65К (oxygen) and 65-76 (peroxide of hydrogen).

    New Russian torpedo UGST includes excellent experience and an artificial intellect.

    UGST versatile deep-water homing torpedo

    Designed to defeat surface ships and submarines.
    The torpedo can be launched from submarines and surface ships.
    The 7.2-m long basic model of the torpedo can be launched from tubes designed to Russian standards, while its 6.1-m long version fits torpedo tubes designed to NATO standards. The torpedo’s onboard systems are adapted to the platform’s relevant systems by adjusting the weapon’s computer software to that of the parent ship. The UGST torpedo consists of:
    • a warhead section containing an explosive charge;
    • an equipment module including the homing and wire guidance systems, as well as running control and other electronic systems;
    • an axial-piston engine using one-component liquid fuel;
    • a low-noise water-jet propulsor coupled directly with the engine (without a reduction gear unit).
    The active/passive homing system uses a planar transmit/ receive antenna array with a scan sector that can be adjusted.
    The practice configuration of the torpedo is used for training personnel and naval forces. For this purpose, a warshot torpedo is converted to the practice version by substituting the warhead section for a practice one. For positive buoyancy, the fuel tank of the practice torpedo can be filled partially.

    Basic Characteristics:
    Weight, kg:
    – torpedo – 2,100 (1,800)
    – explosive charge – not less than 300
    Caliber, mm – 533
    Length:
    – torpedo, mm – 7,200 (6,050)
    – telecontrol wire, km: torpedo guidance wire reel – up to 25; towed guidance wire reel – up to 5
    Range, km – up to 50 (up to 40)
    Speed, knots:
    – mode I – 50
    – mode II – 35
    Depth, m:
    – running – up to 500
    – launching from submarine – up to 400
    Homing range, km:
    – submarine – up to 2 -2. 5
    – surface ship – up to 1.2
    Surface ship’s wake indication time, s – up to 350
    Fuze actuation range, m:
    – submarine – 2
    – surface ship – 6-8

Viewing 11 posts - 1 through 11 (of 11 total)