eCharcha.Com   Support eCharcha.Com. Click on sponsor ad to shop online!

Advertise Here

Go Back   eCharcha.Com > Current Affairs > Defense

Notices

Defense Defense and national security...

Reply
 
Thread Tools Display Modes
  #1  
Old August 13th, 2003, 09:36 PM
vyomkeshsaxena's Avatar
vyomkeshsaxena vyomkeshsaxena is offline
Senior eCharchan
 
Join Date: Aug 2000
Location: laluland
Posts: 6,058
vyomkeshsaxena has a reputation beyond reputevyomkeshsaxena has a reputation beyond reputevyomkeshsaxena has a reputation beyond reputevyomkeshsaxena has a reputation beyond reputevyomkeshsaxena has a reputation beyond reputevyomkeshsaxena has a reputation beyond reputevyomkeshsaxena has a reputation beyond reputevyomkeshsaxena has a reputation beyond reputevyomkeshsaxena has a reputation beyond reputevyomkeshsaxena has a reputation beyond reputevyomkeshsaxena has a reputation beyond repute
Thumbs up INS talwar commissioned - india's first stealth destroyer

y'day indian navy commisioned itz first stealth destroyer...here r the details of the system....

TALWAR {KRIVAK III} CLASS

Vessel Type: Destroyer, Type 1135.6

Structure: These 'stealthy' ships are to a modified Krivak design based on on the Severnoye (Northern) Design Bureau initiative. While the superstructure sides are sloped and relatively clean, the very cluttered topside of the ship cannot be remotely described as having any signature reducing features. However, these frigates will be the first Indian Navy warships to incorporate some stealth features and a vertical launch missile system. Some weapon, radar and sonar system details are still speculative.

Displacement: 3850 tons full load.

Dimensions: Length - 124.5 metres.
.................Beam - 15.2 metres.
.................Draught - 4.2 metres.

Main Machinery: The Zorya/Mashproekt M7N.1E gas turbine plant which comprises of 2 x DS-71 cruise turbines and 2 x DT-59 boost turbines in 2 engine rooms.

The cruising component consists of two DS-71 gas-turbine engines (each rated at 9000 hp, forward running, and 1.500 hp in reverse), two cruising RO63 two-speed gearboxes and one cruising R1063 auxiliary (cross-connected) gearbox which makes it possible to use any of the cruising engines to drive both propeller shafts. Ratings at ISA + 15 air temperature.

A boost component with two DT-59.1 gas-turbine engines (each rated at 19,500 hp, forward running, and 4500 hp in reverse) and two RO58 single-speed reduction gearboxes. Ratings at ISA + 15 air temperature.

All the engines & gearboxes are referred to as L (Levyy) and P (Pravyy) sets except for the R1063 auxiliary (cross connection) gearbox. In Russian, Levyy means Left and Pravyy means Right. So, there would be a DS71L, RO63L, and DS71P, RO63P and so on. Mashproekt Scientific & Production Enterprise of Ukraine manufactures the Zorya-designed gas turbines and reduction gears. The basic specifications of marine gas turbine units (GTU) are;

GTU (Gas Turbine) starting time: 120-180 seconds.
Time to accelerate from idle running mode to rated power mode: 300 seconds.
Time to decelerate from rated power mode to idle running mode: 40-70 seconds.
Full reverse time: 70-120 seconds.
MTBO (Mean Time Between Overhauls) for engines: 20,000 to 30,000 hours.
MTBO (Mean Time Between Overhauls) for reduction gears: 50,000 to 60,000 hours.

Electrical power is provided by four 1 MW Wartsila WCM-1000 generator sets with Cummins KTA50G3 engines and Kirloskar 1MV AC generators. These are not mounted in acoustic enclosures unlike the Project 17 Class frigates. The contract for the generators was signed with Wartsila Denmark.

Maximum Speed: 30 knots.

Maximum Range: 4600 miles at 20 knots.
.......................1600 miles at 30 knots.

Maximum Sea Endurance: 30 days.

Complement: 180 (incl. 18 officers)

Radar: Surface Search; One (NATO: Palm Frond) radar at I-band frequency and two MR-212 radars.

Air/Surface Search; One Fregat M2EM (NATO: Top Plate) 3D circular scan radar at D/E-band frequency.

Fire Control; A 5P10 fire control system comprising a phased array and target tracking radar along with laser and TV devices. The system has a maximum detection range of 60 km. It operates autonomously and is capable of automatically locking on to four targets and tracking them.

Sonar: Some reports indicate that Bharat APSOH, a hull-mounted, providing active search & attack with medium frequency is installed. Also has a SSN-137 VDS (Variable Depth Sonar), providing active search with medium frequency. Other reports from Russia indicate that French towed array sonars (TAS) are fitted. This is very plausible given that many Indian Navy ships now use French TAS.

Weapons: Eight universal vertical launch cells for the Klub-N ASCM are fitted. Fire control is provided by a 5P10 radar fitted above the bridge along with in-flight course correction updates via data links.

In the air defence role, the Shtil-1 medium-range SAM with a single 3S-90 launcher is fitted forward of the bridge. The Shtil system uses either the SA-N-7 (navalised SA-11) or the SA-N-12 (navalised SA-17) surface-to-air missile, of which 24 missiles are carried on board. Guidance and target illumination for these missiles is provided by four MR-90 Orekh (NATO: Front Dome) radars. Eight Igla-1E (SA-16) portable air defence missiles are also carried.

One 100mm A-190(E) gun, for use against ship and shore based targets, with 60 rds/min to 8.2n miles; 15 km. Weight of shell is 16 kg. Fire control is by the 5P10 director mounted atop the bridge. For the CIWS (Close In Weapon System) role, two Kashtan Air Defence Gun/Missile Systems are used.

The A-190(E) gun is based on innovative technological and layout solutions, which features relatively low weight-size characteristics. The gun leads to a more than three-fold increase in the combat effectiveness of surface combatants, as compared to those fitted with the AK-176M (fitted in the Khukri Class), owing to: increase in the range of fire (roughly twofold); 1.8 times growth in the lethality of projectiles at a target; doubled accuracy of fire; and reduced reaction time as a result of automated operations, such as preparation of the gun for firing, selection of ammunition, monitoring of mechanisms' operation during firing, and display of data on the operator's monitor.

The A-190(E) gun is also superior to the AK-100 gun (fitted in the Delhi Class) in terms of basic performance characteristics: the rate of fire (approximately 1.5 times); accuracy (about three times); weight; dimensions; and operating characteristics. The gun also features higher automation of fire preparation and control. The gun employs advanced guided and rocket-assisted long-range and enhanced-lethality projectiles fitted with dual-mode impact / proximity fuses set to operate over the target area. Together with the use of the muzzle velocity meter, it is designed to produce ever increased combat capability of the system in fire against sea- and shore-based point and area targets. In addition, the gun hull features stealth technology to minimize the radar signature of a ship.

RPK-8 system using a 12 barrelled RBU-6000 ASW launcher to fire the 90R anti-submarine missile. The firing range is from 600 to 4300 metres, and the depth of engagement is up to 1000 metres.

Four PTA-53 533mm (2 twin) fixed torpedo tube launchers.

Combat Data System: A Russian-designed combat data system.

Helicopter Capacity: One Ka-28 Helix-A ASW helicopter or one Ka-31 Helix-B AEW helicopter. The vessel can also embark the navalised variant of the indigenous HAL Dhruv.

Countermeasures: Decoys; Two PK-2 chaff launchers.
.........................ESM; Bharat Ajanta (intercept).
.........................ECM; ASOR 11356 (jammer).

Comments: On 17 November 1997, Russia and India signed a $1 billion contract, after which Severnoye Design Bureau began detail design and the shipbuilder, Baltisky Zavod of St. Petersburg, Russia began preparations for their construction. The Talwar Class of vessels are built as frigates, but because of the local area-defence Shtil-1 SAM being installed on the Indian vessels, they will be designated as destroyers in the Indian Navy.

The first vessel, the Talwar, commenced engine sea trials in November 2001 and immediately ran into major problems with the machinery, hull, equipment integration and weapons systems. Indian media reports indicate that as of December 2002, the Shtil SAM system had been unable to hit any airborne targets during trial firings. This may be due to integration problems between the combat management and weapons systems. The Indian Navy will not take delivery until all problems are rectified. In fact, the commissioning crew was flown back to India because of the extent of problems, and the time needed to fix them. This has set back scheduled delivery dates very considerably - from May 2002 for the Talwar to sometime around April 2003.

This project involves around 130 suppliers from Russia, Belarus, Ukraine, India, Britain, Germany, Denmark and other countries including over 30 St. Petersburg-based naval design organizations and institutes. There are also a considerable number of Indian component suppliers. Two Halmatic Pacific 22 Mk.I rigid inflatable boats (RIBs) are used as general ships boats. The Talwar Class of vessels are designed primarily for ASW warfare and for the air defense of naval task forces. The Navy wants to fill the gap created by the decommissioning of the Leander Class frigates and until the Project 17 Class frigates enter service. These frigates will be the first Indian Navy warships to incorporate some stealth technology.
Attached Images
File Type: jpg talwar5.jpg (113.9 KB, 25 views)

Last edited by padhu; August 14th, 2003 at 04:56 AM.
Reply With Quote
  #2  
Old August 13th, 2003, 09:38 PM
vyomkeshsaxena's Avatar
vyomkeshsaxena vyomkeshsaxena is offline
Senior eCharchan
 
Join Date: Aug 2000
Location: laluland
Posts: 6,058
vyomkeshsaxena has a reputation beyond reputevyomkeshsaxena has a reputation beyond reputevyomkeshsaxena has a reputation beyond reputevyomkeshsaxena has a reputation beyond reputevyomkeshsaxena has a reputation beyond reputevyomkeshsaxena has a reputation beyond reputevyomkeshsaxena has a reputation beyond reputevyomkeshsaxena has a reputation beyond reputevyomkeshsaxena has a reputation beyond reputevyomkeshsaxena has a reputation beyond reputevyomkeshsaxena has a reputation beyond repute
yaar moderators...commisioned ki spelling theek karna thread title mein...thanx
Reply With Quote
  #3  
Old August 13th, 2003, 09:48 PM
vyomkeshsaxena's Avatar
vyomkeshsaxena vyomkeshsaxena is offline
Senior eCharchan
 
Join Date: Aug 2000
Location: laluland
Posts: 6,058
vyomkeshsaxena has a reputation beyond reputevyomkeshsaxena has a reputation beyond reputevyomkeshsaxena has a reputation beyond reputevyomkeshsaxena has a reputation beyond reputevyomkeshsaxena has a reputation beyond reputevyomkeshsaxena has a reputation beyond reputevyomkeshsaxena has a reputation beyond reputevyomkeshsaxena has a reputation beyond reputevyomkeshsaxena has a reputation beyond reputevyomkeshsaxena has a reputation beyond reputevyomkeshsaxena has a reputation beyond repute
one of the sexy thing abt this ship apart from state-of-art defense systems and stealth feature is the incorporation of Ka-31 AEW helicopters which will add punch to the anti-submarine n anti-submarine n electronic warfare of indian navy...here r the details..

The radar can simultaneously track up to 20 airborne or surface threats, and can detect fighter-sized aircraft from a range of 110 - 115 km and surface ships at a horizon of 200 km from an altitude of 9840 feet. Some sources state that the radar allows detection of up to 200 targets at any one time and track targets 20 simultaneously, with detection range of aerial targets up to 80 nautical miles (150 km) and surface targets up to 135 nautical miles (250 km). Developed by the NIIRT (Nauchno-Issledovatelskiy Institut Radiotekhniki) Radio Scientific-Research Institute in Nizhny Novgorod, the radar antenna weighs 200 kg (441 lbs). The co-ordinates, speed and heading of a target gathered by the radar are transmitted via an encoded radio data-link channel to a ship-borne or shore-based command post.



other link:

Ka-31 helicopter is intended for long-range detection of air targets of a fixed-wing/helicopter type, including detection at low altitudes, and over-waters ships, their tracking and automatic transmission of their data to the command posts. The helicopter can considerably increase combat mission efficiency of Navy ships, Army aviation and tank detachments by providing them with timely information about the actions of the ships, fixed-wing aircraft and combat helicopters of the enemy.

Ka-31 helicopter is developed on the basis of Ka-27 ship-borne coaxial helicopter. Under the transport cabin floor there is a compartment housing the support-rotating mechanism of a 6-m span antenna. To prevent the interference in the antenna all-round rotation plane the nose landing gear legs are retracted rearward into the cowlings flight-wise and the main legs are retracted upward. In stowed position the antenna is kept against the fuselage bottom. The search and attack equipment of Ka-27 helicopter intended for fighting against sub-marines is dismounted. Instead, a radio-electronic suite is installed for radar target detection, targets identification and transmission of the over-water and air situation data to the ship-based and ground-based command posts. Ka-31 is based on the ships and on the ground.

The KA-31 radar picket helicopter is intended to be used to detect targets flying at the altitudes lower than the flight altitude, and to transmit information from them to the ground and ship-based points of information reception, and also to light the above-water surface. The KA-31 helicopter being fitted with the complex of radio electronic equipment, provides for:

detection and state identification of the targets carrying out a flight in the zone of sea and land;
detection and state identification of the above-water targets;
automatic determination of the coordinates and parameters of the movement of targets;
automatic tracking and transmission to the points of information reception about several (up to 20) targets.
Installation of the complexes of radar, flight-navigation and communication equipment on board the helicopter allows to perform the main functions in the automatically controlled mode, while having on board the crew consisted of two persons.

The core of the on-board avionics suite is powerful solid-state radar. The radio-electronic package automatically controls the helicopter flight over the specified route in any weather and climatic conditions. When the radio-electronic package is on, the antenna is extended and the navigator has elected the operational mode, all further operations are performed automatically without operator interference. The navigator role is simply to control the systems operation and to duplicate target observation on the display screen.

The KA-31 helicopter has been created on the basis of the ship-based helicopter and may be used, due to its technical and operative performances, from the land as well as from the ship bases, at mis unprepared areas are used. To increase the flight safety in the conditions of icing, the helicopter is equipped with the rotor blade thermoelectric anti-icing system, engine air intake anti-icing system and crew cabin glazing anti-icing system. The blade folding mechanism allows to considerably reduce the overall dimensions of the helicopter at its storage in the hangars of ships and aerodromes.

The AEW helicopters are not very common in the navies of the world. They have relevance particularly where carrier born fighter support is available to counter the detected threat. The AEW radar necessarily have to be bulky and their bulk is normally accommodated in large fixed wing AEW (or AWACS) type of aircraft. AEW radar for helicopter, which is a much smaller platform, invoves considerable design optimization and tradeoffs as compared to normal maritime patrol radars. Taking these two factors i.e. small potential customer base and demanding design efforts it is appreciated that the AEW radar that has been acquired will not be outdated in the same time frame as other avionic equipment.

The Indian Navy has been trying to acquire organic Air Early Warning (AEW) capability for over a decade. The earlier attempts for procurement of Sea King 42-D helicopters could not fructify leaving a major gap in surveillance capability at sea. It was the experience of the Indian Navy that no aircraft manufacturer has the complete aircraft, which meets all the specific required systems fully integrated at the time of evaluation. The practice therefore is to evaluate the most critical areas and apply professional judgment in extrapolating the capabilities of the platform, systems, designers and manufacturers.

The Ka-31 helicopter purchased by India in 2001 was first flown in 1988 and had completed 600 flights by February 1996 when the evaluation team visited Russia. The team evaluated the helicopter with its radar installed and fully operational. Air targets were also detected and seen by the evaluation team. The Naval Staff Qualitative Requirements (NSQR) were formulated in Dec 1995. The performance evaluation was carried out in February 1996. The trial directive was issued to the evaluation team and the team was briefed by the concerned Directorates of the Naval Headquarters to check the helicopter as per these NSQRs during their evaluation.

An AEW helicopter is not expected to be significantly affected in its performance by change in environmental conditions from Russia to India.The Aviation industry world over follows the 85 per cent learning curve. The number of KA-28 helicopters manufactured will give a production cost of helicopter, which is vastly different and incomparable to the cost of production of four KA-31 helicopters. This fact was taken into consideration while negotiating the price.

The comparison between KA-31 and KA-28 helicopters based on their mere similarity in their airframe is not appropriate. It may be clarified that a clear perspective has been maintained by comparing the price of four KA-31 AEW helicopters ($ 92.40 million) with 3 Sea King 42 B helicopters ( UK pound 86.6 million).






Maximum flight speed 250 km/h
Cruise flight speed 220 km/h
Patrolling speed 100-110 km/h
Flight range 600km
Maximum patrolling altitude 3500m
Altitude of hovering out of ground effect in ISA 2500m
Patrolling time 2,5h
Radar coverage, degree 360
Fighter-type target detection range, km 100-150
Over-water target detection range, km within the radio horizon range
Target detection range with the reference surface of dissipation 1,8 sqr.km 110-115 km
Target detection range with the reference surface dissipation 3000 sqr.km, km of-within the limits of radio horizon
Number of simultaneously tracked targets, pcs 20
Attached Images
File Type: jpg ka-31a.jpg (41.7 KB, 23 views)
Reply With Quote
Reply

Bookmarks


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Discussing the capabilities of India's future stealth aircraft ashdoc Defense 3 December 6th, 2010 05:28 AM
India's most powerful destroyer yet launched ashdoc Defense 2 April 2nd, 2010 07:04 AM
Budshikhan-destroyer of idols Momin SoapBox 36 January 16th, 2010 10:07 AM
TALWAR- our new guided missile destroyer vyomkeshsaxena Defense 2 May 10th, 2002 11:02 PM
Work on India's first stealth warship to begin in November echarcha Defense 9 October 28th, 2000 06:28 AM


All times are GMT -7. The time now is 10:26 PM.


Powered by vBulletin® Version 3.7.2
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Site Copyright © eCharcha.Com 2000-2012.