EXCLUSIVE FIRST VIDEO & IMAGES: Here She Is! D63 Kolkata Destroyer With Indian Navy

[damiendehorn]

For a common issue (in this case reducing RCS) there will be a common solution, there is a term for this but it is eluding me at this very moment. It is the same reason that all the flying wing UCAV designs (MIG SKAT, X-47, NEURON, AURUA etc) are so similar that leads mean, less informed individuals, to speculate that certain designs are copies of one another.

It's called the convergent theory, form follows function.

 

[Black Mamba1]

I have seen these destroyers under construction while I went their for their system integration few times.

Just to inform you that GRSE Kolkata is building 7-8 landing craft utility vessels. Apart from that 4 Kamorta class anti submarine corvettes are under development there.

Entire IT system integration support was taken care by us. I am proud to contribute in a very small way.

 

[Storm Force]

I am so impressed by the indian navy indengious weapons capability, their vision and lead.

Kolkatta BAD *** warship

 

[Gessler]

@UDAYCAMPUS @Dillinger @Capt.Popeye @Koovie @gslv mk3 @Abingdonboy @sancho

Anyone talks nonsense about Shivalik/Kolkata/Kamorta hull structure without knowing a dime, just slap this
pic of DDG-1000 Zumwalt up their faces -

 

[Water Car Engineer]

 

[Abingdonboy]

It's called the convergent theory, form follows function.

Thanks for the reminder bro!

 

[Capt.Popeye]

@UDAYCAMPUS @Dillinger @Capt.Popeye @Koovie @gslv mk3 @Abingdonboy @sancho

Anyone talks nonsense about Shivalik/Kolkata/Kamorta hull structure without knowing a dime, just slap this
pic of DDG-1000 Zumwalt up their faces -

No.
I will not bother to take even so much trouble to educate somebody ignorant who is patently trying to pitch "some agenda". In this particular instance; the "Troll in Question" had already exposed himself by the content of his (now expunged) post on this thread. Then he rendered himself completely without a 'fig-leaf' in the purported explanation in the Member's Club; which betrayed the depth of ignorance.

Now this phenomenon that is displayed in the picture of the Zumwalt and many other Ships is simply related to the Metallurgical properties of the Steel used; most notably in HTS (Hi-Tensile Steel) which is now commonly used .
While this is not seen in the body of an automobile or refrigerator or washing-machine or the so-called 'white-goods'. Again because of the Metallurgical properties of the Steel used there; which is EDD (Extra Deep Drawn Steel) which again is used for its specific properties. Only a Fool will speak of using foil to make Ships!

 

[OrionHunter]

Great Ship, how many does the Indian navy plan to have in service?

In this class - INS Kolkata, INS Chennai and INS Kochi.

 

[acetophenol]

@
Capt.Popeye:
Can the Shivaliks be upgraded with integrated masts in the future?

 

[Capt.Popeye]

@
Capt.Popeye:
Can the Shivaliks be upgraded with integrated masts in the future?

Why not? Technically it is feasible.
However the question is: What will be the "over-riding and over-arching" benefits of that?
Everything has to be considered through the prism of a "cost-benefit paradigm". It may be more worth-while to invest in upgrading Sensors and Weapons in the future instead.

 

[Water Car Engineer]

I wish they could retrofit Shivaliks with VLS Barak 8s.

 

[Penguin]

For a common issue (in this case reducing RCS) there will be a common solution, there is a term for this but it is eluding me at this very moment. It is the same reason that all the flying wing UCAV designs (MIG SKAT, X-47, NEURON, AURUA etc) are so similar that leads mean, less informed individuals, to speculate that certain designs are copies of one another.

serendipity, synchronicity, simultenaity?

At this point the FREMM is the only frigate to have true IR reduction measures( with the Daring and Horizon classes in second). I dont see such efforts made as such in Kolkata but the Karmota shows that promise.

Meko A200? ThyssenKrupp Marine Systems

• The radar reflecting surface has been drastically reduced by the systematic use of the X-form in the design both of the hull area and of the superstructures
• The infrared signature has been significantly reduced by dispensing with stacks and, instead, conducting the exhaust to the rear. Seawater spraying into the exhaust pipes, now arranged horizontally, lowers the emission temperature to less than 100°C.
• As far as the acoustic and magnetic signatures are concerned, special attention was paid to fine-tuning the long established and well-proven concepts, such as degaussing systems and flexibly mounted engines and low noise screws.

http://dc369.*******.com/doc/Zx93qSXr/preview_html_7c7de892.jpg
http://dc369.*******.com/doc/Zx93qSXr/preview_html_674e6915.jpg
http://dc369.*******.com/doc/Zx93qSXr/preview_html_4661898f.jpg

 

[Penguin]

At this point the FREMM is the only frigate to have true IR reduction measures( with the Daring and Horizon classes in second). I dont see such efforts made as such in Kolkata but the Karmota shows that promise.

Perhaps clarify what you mean by ture IR reduction measures ?

DUTCH LCF 'Zeven provincien class' FRIGATE, see page 13

Royal Netherlands Navy Above Water Signature Management
http://www.leongalle.com/Documents/Galle, L.F. - Royal Netherlands Navy Above Water Signature Management.pdf

Reduced Infra Red Signature LCF
Thermal radiation is emitted by a body which has a temperature above zero degrees Kelvin. According to the law of Stefan-Boltzmann this radiant intensity is proportional with the 4-th power of the absolute temperature.
The contrast of the ship's radiant intensity with the environmental background is used by the missile IR-seekerhead. There are in essence two main type of contributors to the IR signature-level of the ship:
• Warm metal hull & superstructure;
• Hot metal uptakes & exhaust gases.
Substantial design activities have also been performed to reduce the LCF IR signature, in concert with the NATO Standard Code SHIPIR. The two main IR contributors have been tackled in the following manner:
Warm metal hull & superstructure
The internal of hull and superstructure has been thermally insulated to hamper heating of the external steelworks. To counter external heating by the sun an effective layout with accompanying capacities of the prewetting (ABC/NBC) system will be installed. The prewetting system will bring hull and superstructure down to near ambient temperatures under threat.
Hot metal uptakes & exhaust gases
There are commercial systems on the market that can take care of the hot metal uptake and in combination with the exhaust. These Infra Red Suppression Systems (IRSS) work in principle by mixing in cold air, either by natural or forced convection (fan-assisted). The LCF has provisions for an “Eductor/Diffuser" system. The Eductor/ Diffuser system cools the hot metal uptake and the exhaust gasses.
Next to the installation of specific hardware, first generation IR signature management Software will be installed to support the Ship’s Control Centre (SCC) to optimise it’s signature to the thermal ambient background.

More on IR / Thermal reduction
www.LeonGalle.com

Leon F. Galle was until recently Senior Ship Survivability, at the Department of Naval
Architecture & Marine Engineering (MarTech), Directorate of Materiel of the Royal Netherlands
Navy (RNLN). He was active for 6 years in the field of Ship Vulnerability at the Prins Maurits
Laboratory of the Netherlands Organisation for Applied Scientific Research (TNO-PML). He
started Survivability work (Above Water Signatures & Vulnerability) for the Royal Netherlands
Navy (RNLN) in 1991. The author is national representative of NATO subgroup
AC/141(NG/6)SG/7 "on Ship Combat Survivability" and manages several scientific research
projects on ship RCS, IR and Vulnerability for the RNLN at TNO-FEL and TNO-PML. Since the
start of 2002 the author is heading the Bureau Future Vision & Forward Design of the Depart
Weapon, Sensor & Communication Systems (WCS).

 

[SQ8]

Perhaps clarify what you mean by ture IR reduction measures ?

Of the aforementioned classes. So far FREMM is the only operational one with all three measures in the frigate category as far as I know(which is limited).

 

[Penguin]

Of the aforementioned classes. So far FREMM is the only operational one with all three measures in the frigate category as far as I know(which is limited).

Which three would those be? Radar, IR and noise? See Meko A200.

The design of Shivalik evolved with considerable focus on reducing the ship signatures. Primary focus was on reducing the RCS, Infrared signatures and the Radiated underwater noise of the ship.

RCS: The hull form features flared main hull and sloped full beam superstructure to considerably reduce specular reflections. Special care was taken to avoid dihedral and trihedral corners which cause multiple radar scattering. The boat deck has been concealed behind radar suppression screens. The Gun turret in the foxle has a stealth canopy and the flush deck Vertical Launch Missile (VLMs) for the Surface to Surface Missiles (SSMs) have been conducive to reduced RCS. The helo hangar has sloped shutters and flush deck rails for helo traversing gear. The hull form and superstructure was evolved iteratively by extensive 3D CAD modelling and continuous RCS signature evaluation using specialist signature evaluation software.

IR Signature Reduction: The infrared signature reduction is achieved by using Eductor Diffuser IR suppression devices for the Gas turbine and the diesel engines. Besides exhaust gas cooling, hot metal cooling is achieved to afford good look-down protection from hostile IR sensors. The engine room ventilation with sea water coolers and acoustic enclosures for DAs help to reduce hull contrast temperatures.

Radiated noise: Acoustic studies were undertaken from early design stages by modelling the structure and airborne noise characteristics of machinery equipment to predict the underwater radiated noise. The results of these studies helped drive a balanced approach to noise reduction guiding the selection of machinery configuration and mounting arrangements with specifications for the structure borne vibrations and air borne noise which were included in the procurement orders of the equipment. Acoustic signatures were verified during factory acceptance trials, before clearing the noise critical machinery for installation onboard ship. The sea water suctions are arranged from carefully designed sea chests, to avoid radiation of fluid borne noises due to pump impulses.
Also Read IDR Interview: Admiral Nirmal Verma, Chief of the Naval Staff

Procuring machinery and equipment meeting the stringent vibration and airborne noise specifications was quite a challenge. However, I must say, the Indian industry has come some way to meet the requirements, but there is much road ahead to cover.

‘The P-17 Frigates, heralds a paradigm shift in the design’ » Indian Defence Review

I would think P15A and P17 would share knowledge