ADA LCA Tejas Mark-II

Discussion in 'Indian Air Force' started by Kunal Biswas, Dec 11, 2012.

  1. Kunal Biswas

    Kunal Biswas Member of the Year 2011 Moderator

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    LCA Tejas Mark-II

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    Introduction

    LCA Tejas Mk2 is being developed for use by the IAF and the IN. It will be powered by the more powerful GE-F414-INS6 engine and feature other upgrades.

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    Airframe Modifications

    Minor modifications are being made to the LCA Tejas Mk1 airframe to accommodate the slightly larger engine. The fuselage has been extended by 500mm.

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    The dimensions of Mk2 will be as follows

    Span : 8.20m
    Length: 13.70m
    Height: 4.52m

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    Upgrades

    Besides a more powerful engine, Tejas Mk-2 will feature other improvements. Here is the complete list of planned upgrades

    1 Higher Thrust Engine
    2 Structural Weight Reduction
    3 Aerodynamic Improvements
    4 Upgrade of Flight Control Computer
    5 Electronic Warfare Suite
    6 Avionics Upgrade
    7 In flight refuelling retractable probe
    8 On board oxygen generation system
    9 Increased fuel capacity.

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    Features

    1 Supersonic at all altitudes
    2 15km service altitude
    3 Tailless compound delta wing
    4 Composite structure
    5 Improved performance
    6 Improved maintainability
    7 Improved Survivability
    8 Digital Fly by wire
    9 Fuel dump system
    10 Multi mode radar AESA

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    Development History

    The decision to develop a Mk-2 version of Tejas LCA was taken in September 2008, when it became clear that the Kaveri engine would not be ready in time for the Tejas, which would have to be inducted into service with its current lower thrust GE-F404 engine.

    The GE-F404 powered Tejas doesn't meet IAF requirements, so a followup version of the Tejas is being developed with a more powerful engine. Ironically, LCA Tejas Mk-2 will be the LCA that the IAF sought to begin with.

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    Procurement of New Engine

    ADA is procuring 99 GE-F414-INS6 engines to power the Tejas Mk-2 and LCA Navy. The contract has been finalized and is awaiting approval.

    Under the contract, the first lot of the engines will come by 2014-15 and the rest would be manufactured in India under transfer of technology [agreements].

    In July 2012, Defense sources told the PTI that India and the US are close to signing the $600 million contract for 99 engines, with options to order an additional 100 under the negotiated terms.

    In May 2012, ADA Chief P S Subrahmanya told the press that a contract would be signed with General Electric as soon as the Cabinet Committee on Security (CCS) cleared the deal.

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    Procurement History

    The Price Negotiation Committee (PNC), set up in late 2010 comprising representatives from the Indian Air Force (IAF), the Navy, the Ministry of Defence (MoD), HAL, ADA and the Defence Research Development Organisation (DRDO) finalized the deal after 15 months of negotiation with GE and the US government.

    Procurement of a more powerful engine to power Tejas Mk-2 started when ADA issued a RFP for the supply of engines with thrust in the 95-100 KN to power Tejas LCA Mk 2.

    The RFP indicated an initial procurement of 99 engines with an optional follow-up for 49 more. The initial batch of engines would be procured directly from the manufacturer with the rest being assembled at HAL.

    The RFP was sent to just two contenders: General Electric (GE) for the F414 engine and Eurojet for the EJ200 engine. The two countries submitted their proposals on December 11, 2009, a day ahead of the deadline on December 12.

    DROD said it would pick the engine that requires minimum re-engineering and minimum acquisition + operating costs.

    Extensive re-engineering requirement could trigger a weight spiral, something the LCA is already plagued with.

    DRDO had concerns about the EJ200's ability to withstand the corrosive salt-water naval environment and about F414's limited thrust without reheat, as also any export control restrictions that come bundled with it.

    There were reports that Eurojet proposed a thrust vectoring version of the EJ200 for the Tejas.

    In June 2010, The Hindu reported that the EJ200 engine being offered by Eurojet could meet the differing requirements of the IAF and Indian Navy through a software change.

    “We are offering two variants of the EJ200, bidding for the India's LCA Mark-II which can be altered through a software change to suit the requirements for the naval version of the LCA,” Eurojet Vice-President Sales Paul Hermann told a group of journalists here.


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    Evaluation of Bids

    The initial bids were opened in mid-September 2010. Eurojet bid $666 million and GE $822 million.

    The GE's F-414 and Eurojet's EJ-200--were found technically suitable for the aircraft.


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    GE F414 To Power Tejas Mk-2

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    The DRDO announced on September 30, 2010 that the Price Negotiating Committee for the Alternate Engine for LCA Mk-2 has finalized the Comparative Statement of Tenders.

    The committee was chaired by Dr Prahlada, DS & CCR&D (Ae&SI) and had representatives from Ministries of Defense and Defense Finance, ADA, DRDO, HAL, Indian Air Force, and Indian Navy.

    The commercial quotes provided by both Eurojet and GE Aviation were evaluated in detail by a defence ministry price negotiating committee, after which GE Aviation was declared the winner, the paper said.

    The Euroject bid was rejected despite its lower price because it did not include a lot of expenses.


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    GE F414-GE-INS6 Variant

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    Commenting on India's selection of the GE F414 as Tejas Mk-2 powerplant, John Flannery, President & CEO, GE India told the press on October 1, 2010.

    "GE Aviation will supply the initial batch of F414-GE-INS6 engines and the rest will be manufactured in India under transfer of technology arrangement."

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    Contract Negotiations with GE

    Following the selection of the GE bid, India held protracted negotiations with the company. There were two sticking points.

    1. GE wanted India to sign the deal with one of its subsidiaries.
    2. GE wanted India to agree to pay liabilities in case the IAF used the engine to power aircraft carrying nuclear weapons and one of these aircraft crashed in Pakistan!

    India countered by saying that GE had bid for the deal, not any of its subsidiary. It also convinced GE to drop the liability clause.

    On February 11, 2012 the Deccan Herald reported that on January 22, 2012, the MOD decided to go ahead with the contract.

    Once the the Cabinet Committee on Security (CCS) approves the MOD decision, the contract would be finalized.

    Under the contract, GE would ship 18 engines with the remaining being manufactured in India by HAL. In addition, GE would help India integrate the engine with the LCA airframe.


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    GE F414 Features

    GE had delivered more than 1,000 F414 engines worldwide and logged 1 million flight hours.

    The engine features FADEC and single engine safety features.


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    Minor Modifications to Tejas Airframe

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    ADA and HAL will need to make a few small slight to the Tejas airframe to make the new engine fit.

    “It meets all the performance requirements of Tejas, like the rate of turn and thrust in all modes,” a source told AW&ST. “The first lot of the engines will come by 2014-15 and the rest would be manufactured in India under transfer of technology [agreements]. The first lot of engines would undergo some simple tests and minute modifications before they are fitted to Tejas Mk-II ... The GE F414 would also power the LCA naval variant.

    In November 2010, AW&ST reported that an ADA team has initiated studies on the Mk.2's proposed operational envelope, fluid dynamics studies of new components and analysis of new engine components. The team is also producing fresh numerical master geometry and inboard drawings, a new digital mock-up of the entire Mk.2, and a wind tunnel model in collaboration with the National Aerospace Laboratory.


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    Tejas Mk2 First Flight

    The Tejas Mk.2 is scheduled to make its first flight in 2014, with full-rate production to follow two years later.
     
  2. Kunal Biswas

    Kunal Biswas Member of the Year 2011 Moderator

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    Users Insist On Radical Makeover For Tejas Mk2

    Vendor selection by the Bengaluru-based Aeronautical Development Agency (ADA) in consultation with the Indian Air Force (IAF) for supplying various critical sub-systems of imported origin for the Tejas Mk2 multi-role combat aircraft (MRCA), which has been delayed by almost one-and-a-half years, is now expected to be concluded by next March. By then, the IAF would recommend the vendor for supplying the integrated fire-control system (including an infra-red search-and-track sensor, or IRST, integrated with an AESA-based multi-mode radar, or MMR), and a frameless canopy actuation system.

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    Choice of the optimum combination of air combat missiles (both within-visual-range and beyond-visual-range) will be totally dependent on which fire-control system is finally selected, with the principal contenders being Raytheon and MBDA (AIM-132 ASRAAM/AIM-120C AMRAAM), RAFAEL of Israel (Python-5/Derby), MBDA (MICA family) and Russia’s Vympel JSC (RVV-MD/RVV-SD combination), which IAI/ELTA Systems will likely propose in case the Python-5/Derby solution is rejected by the IAF.

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    The principal lightweight PGM destined for the Tejas Mk2 is likely to be the mix of PGM available to IAF in present and in future, Notably the AASM Hammer modular air-to-ground weapon built by France’s SAGEM Défense Sécurité. France’s defence procurement agency DGA..

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    Both the IAF and Indian Navy have also recommended that the projected cockpit of the Tejas Mk2 should offer a range of new and enhanced features such as a centric, modular concept of operation, enabling pilots to control and personalize the displays, applications and information sources.

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    Rest here : TRISHUL: Users Insist On Radical Makeover For Tejas Mk2
     
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  3. Kunal Biswas

    Kunal Biswas Member of the Year 2011 Moderator

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    An Israeli Radar in India’s Jet Fighter?

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    From : An Israeli Radar in India’s Jet Fighter?
     
  4. Kunal Biswas

    Kunal Biswas Member of the Year 2011 Moderator

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    Indigenous AESA radars for Tejas Mark-2 : Saraswat

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    From : Indian Defence News - Indigenous AESA radars for Tejas Mark-2 : Saraswat
     
  5. Kunal Biswas

    Kunal Biswas Member of the Year 2011 Moderator

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    Tejas designers target world class technologies for Mark II fighter

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    :: Bharat-Rakshak.com - Indian Military News Headlines ::
     
  6. Kunal Biswas

    Kunal Biswas Member of the Year 2011 Moderator

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    Post news related to LCA-MK2
     
  7. LETHALFORCE

    LETHALFORCE Moderator Moderator

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    Seems like there is a lot of US-India collaboration on LCA MK2 then revealed?
     
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  8. Kunal Biswas

    Kunal Biswas Member of the Year 2011 Moderator

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    Will see that in coming days..
     
  9. gokussj9

    gokussj9 Senior Member Senior Member

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    Will the MK2 be a good match for Gripen NG?
    What about the the Chinese J-10 and J-11?
     
  10. LETHALFORCE

    LETHALFORCE Moderator Moderator

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    MMR radar developed for LCA
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    HAL- LCA-Tejas - Machtres Fighters

    The development of an AESA radar for the Tejas is expected to begin pending the selection of an developmental partner.The contenders for the contract are the European Consortium EADS and the Israeli company Elta.The initial contract will see the co-development of 10 prototypes.



    Out of 10 prototypes a few must be ready to go??
     
  11. LETHALFORCE

    LETHALFORCE Moderator Moderator

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    If all these upgrades go according to plan the Chinese planes will be atleast one generation under MK2.
     
  12. Kunal Biswas

    Kunal Biswas Member of the Year 2011 Moderator

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    LCA MK-2 is good accordingly what appears from its Specs..

    How it will preform is yet to know, so i would not compare ( ****-measuring competition ) with anyone now..

     
  13. LETHALFORCE

    LETHALFORCE Moderator Moderator

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    Next up for testing is a sophisticated on-board oxygen generating system, developed by the DRDO’s Defence Bioengineering and Electro-medical Laboratory (DEBEL), which continuously collects atmospheric oxygen and supplies it to the pilot. Today, the capacity of the oxygen bottles that contemporary fighters carry limit mission times; when oxygen runs low, the pilot heads back to base. Now, the on-board oxygen generating system, along with mid-air refuelling and the Tejas Mark II’s increased fuel load, will allow 3-4 hours of continuous flying, more than most fighters in the world.

    This IMO is groundbreaking
     
    Last edited: Dec 11, 2012
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  14. LETHALFORCE

    LETHALFORCE Moderator Moderator

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    This means deeper strike missions can take place and if you wanted to do 24 hour around
    the clock strikes fewer planes would be needed.
     
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  15. Kunal Biswas

    Kunal Biswas Member of the Year 2011 Moderator

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    It will carry more internal fuel compare to LCA MK1 hence longer range..
    @ersakthivel
     
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  16. Kunal Biswas

    Kunal Biswas Member of the Year 2011 Moderator

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    [​IMG]

     
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  17. ersakthivel

    ersakthivel Senior Member Senior Member

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    For it's primary air to air role, mk-2 will be loaded with air to air missiles and no heavy ground bombs .
    SO this fuel load will come in handy for a longer loiter time and greater range in air to air mode.
    So this will push mk-2 into medium weight fighter category's operational capability ,from the present light weight operational capabilities of mk-1.

    If asea is radar is added in upgrades along with meteor missiles(ADA chief says it will have the operational interface to launch any long range BVr missiles that will enter into IAF through MMRCA competition, so it can only be meteor.Rafale's primary Long range missile is meteor.) it will be one of the best 4.5th gen fighters with capability to fire one of the most modern long range BVRs with latest generation ASEA radar which will be discreet and hard to jam.

    In the south asian context and china border this will be one of the deadliest combination of radars and missiles with lowest possible radar cross section besides the 5th gen.

    When we consider the himalayan border region the low flying tejas in this combination will be even harder to detect if it flies in predetermined flight paths ,hugging high mountain ranges.
     
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  18. ersakthivel

    ersakthivel Senior Member Senior Member

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    Tejas fighter jet won't be combat-ready before 2015 - Times Of India
    the above article is a classic example of reporting that don't highlight the milestones or what has been achieved in tejas program .
    What is missing in this piece is
    1.funding for TDs released only in 1993.
    Only two TDs were built and flew to prove the fly by wire tech and composites and glass cockpit tech as per the 1983 ASR of 1.5 mach top speed at service ceiling,with 4 ton weapon pylon load with an air inlet corresponding to 80 kn thrust engine.

    After that the IAF received longer range BVrs with higher weight from Russia.So accordingly wings were strengthened leading to extra weight in 2004 and the Pvs( for mk-1)meaning the start of development of mk-1 initiated in 2004 only.

    That is the reason for mach 1.6 top speed at 7 km altitude till LSP-6 .Lsp-7 and 8 and SPs will have inlet modification to cater to higher thrust engine.

    Mk-2 with 5 ton weapon load with increased range and higher thrust to weight ratio with mach 2plus top speeds at service ceiling will roll out in 2015.

    Even mk-1s can be upgraded close to mk-2 status in upgrades with higher powered engine and redesigned air intake.
     
    Last edited: Dec 14, 2012
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  19. ersakthivel

    ersakthivel Senior Member Senior Member

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    Auxillary air intakes are clearly visible in the above photos designed for higher airflow to reach higher topspeeds with higher thrust engines.
    So tejas mk-1 won't be stuck at mach 1.6 with lower powered engine and smaller air intake designed for the 1.5 mach top speed of 1983 ASR forever.
     
    Last edited: Dec 14, 2012
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  20. ersakthivel

    ersakthivel Senior Member Senior Member

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    The airintake redesign wont pose major problems.
     
    Last edited: Dec 14, 2012

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