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Re: Indian Arihant Class Nuclear Ballistic Missile Submarines

MwRYum said:

But one thing is certain, their SSBN design - at least by the hull design - is superior to the Chinese, who still have to live with the noise-and-drag-inducing hump for its SLBM silos on the 094 SSBN.

But in terms of surface treatment and acoustic tiles Chinese have made progress, if their latest SSK designs are of any indication...when compare with the photo of Arihant, one must wonder why they skipped on this department? Didn't they learned from the Russians or Germans?

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094 is a ballistic submarine, they have no choice but to have huge humps for large ICBMs. That's like big trucks have no choice but to have big engines and tires.

Plus, this problem is not just in this submarine, but all of their ships, even including the latest ones that just entered service, all seem to have rugged unsmooth surfaces.

---------- Post added at 11:47 AM ---------- Previous post was at 11:45 AM ----------

I guess the reason it's ahead of the 094 is due to its timeframe, being designed and built many years later. Another reason is its nature being an attack sub, which requires a lot more to its design. All 094 has to do is carry lots of missiles and hide on the bottom of the ocean.

Re: Indian Arihant Class Nuclear Ballistic Missile Submarines

Vini_Vidi_Vici said:

094 is a ballistic submarine, they have no choice but to have huge humps for large ICBMs. That's like big trucks have no choice but to have big engines and tires.

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Isn't INS Arihant also a SSBN? I don't think a hump is unavoidable, but the type 094 seems to be nothing more than a refined and updated version of the type 092 so it retains the same hull outlines.

Re: Indian Arihant Class Nuclear Ballistic Missile Submarines

joshuatree said:

Isn't INS Arihant also a SSBN? I don't think a hump is unavoidable, but the type 094 seems to be nothing more than a refined and updated version of the type 092 so it retains the same hull outlines.

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Apparently Arihant is supposed to be both. But I personally think it's more panning attack sub. Plus the Indians don't have true ICBM, their missiles are still pretty small. Real SSBNs all have humps, unless it's designed to be like Ohio or Typhoon, both being super tall and super huge. Otherwise, it's hard to avoid it. Because ICBMs have a minimum size, it's impossible to carry it unless the height of the hull is able to contain the ICBM.

Re: Indian Arihant Class Nuclear Ballistic Missile Submarines

That picture date back in prior to 2009 ceremonial launch, when even the nuclear reactor was not mated into the submarine, maybe rubber tiles will help in smoothing they surface. The first of Arihant Class should serve as a test bed , while 3 more are planned with construction of the second submarine should be in process while third should be in the pipeline, Arihant class is supposed to be a ballistic missile carrier, while no confirmed reports of construction of attack submarine have been recieved, yet navy have the desire of acquiring a fleet of both SSBN and SSN, the SSN role might be cover by the leased Akula class of which their are reports of a second acquisition being in process or may be a domestic effort, due to the high secrecy maintained in the nuclear submarine project, it is hard to find enough evidence regarding the project and its weapon and sub systems.

Re: Indian Arihant Class Nuclear Ballistic Missile Submarines

Vini_Vidi_Vici said:

Apparently Arihant is supposed to be both. But I personally think it's more panning attack sub. Plus the Indians don't have true ICBM, their missiles are still pretty small. Real SSBNs all have humps, unless it's designed to be like Ohio or Typhoon, both being super tall and super huge. Otherwise, it's hard to avoid it. Because ICBMs have a minimum size, it's impossible to carry it unless the height of the hull is able to contain the ICBM.

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Well that's I mean, if the next Chinese SSBN is designed more along Ohio or Typhoon shape and size, you won't have to deal with the hump. Personally, I think they should strive towards that. The extra space can be used in so many ways depending on their priorities. I'm not sure if the hump or being bigger overall would be worse when it comes to underwater aerodynamics.

Re: Indian Arihant Class Nuclear Ballistic Missile Submarines

LOL, the extra space in typhoon was used for sauna, swimming pool and treadmill.

Re: Indian Arihant Class Nuclear Ballistic Missile Submarines

Vini_Vidi_Vici said:

LOL, the extra space in typhoon was used for sauna, swimming pool and treadmill.

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Most USN ships no matter the size have gyms with weights & treadmills. Never heard of a sauna or a swimming pool on a USN ship.

Re: Indian Arihant Class Nuclear Ballistic Missile Submarines

Vini_Vidi_Vici said:

LOL, the extra space in typhoon was used for sauna, swimming pool and treadmill.

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Sure, if those are the priorities.

But you could perhaps use it for mission modules, or maybe even increase endurance capacity by increasing crew supplies.

Re: Indian Arihant Class Nuclear Ballistic Missile Submarines

India Kaveri engine project is dead

May 14/12: Kaveri. Minister of Defence Shri A K Antony replies to Shri Bal Kumar Patel in Lok Sabha. No, DRDO still has no time frame to filly develop its Kaveri engine. He reiterates that the engine does not meet requirements for the Tejas, but will be used in UAVs and marine applications. A technology demonstrator may fly in a Tejas Mk.I fighter around 2015. The operative word here is “may”.

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Re: Indian Arihant Class Nuclear Ballistic Missile Submarines

IAF air staff requirement demands for a minimum of 90-95 kn out put from the Tejas, so HAL is going for a MK II. version with GE-414 engine, while Kaveri k-9 will not be able to pump out that much of thrust, it is at present able to pump out upto 81/82 kn of thrust and is designed for not more then 85 kn of thrust. With the revise requirement of IAF, Kaveri was already out as a choice for IAF but the program will go on and might see other application, an application on future UAV/UCAV cannot be ruled out as MTCR restriction will not permit a foreign engine to be fitted upon such a vehicle, recently K-9 successfully completed high altitude test in Russia and the development program is very much in track, but with unfortunate delays.