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LCA Tejas Multirole Aircraft

Discussion in 'Indian Air Force' started by Dark_Prince, Apr 14, 2010.

  1. HariPrasad

    HariPrasad Lieutenant FULL MEMBER

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    Even if lower figures are achieved, It should make Tejas a super plane at a weight of 5.7 ton outclassing anything in the category. With Low RCS, Top class AESA and EW, it will be a real @$$ kicker. JF 17 and J 10 will suck against it. They can simply be the cannon fodder.
     
  2. HariPrasad

    HariPrasad Lieutenant FULL MEMBER

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    @vstol jockey ,

    Sir,

    Where do we stand in SBC in front of Europe, US and Russia?
     
  3. HariPrasad

    HariPrasad Lieutenant FULL MEMBER

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    Shall we use Kaveri for Mk1+ or Mk2 only ?
     
  4. rockstar

    rockstar 2nd Lieutant FULL MEMBER

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    Sorry, what do you mean by 'flat rated'?
     
  5. randomradio

    randomradio Mod Staff Member MODERATOR

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    You are confusing LCA/JF-17 with Gripen.
     
  6. HariPrasad

    HariPrasad Lieutenant FULL MEMBER

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    Supposing we use Kaveri 60 Dry thrust and 100 Wet thrust engine for Mk1+ than it should outclass Gripen in each and every parameter. A 6 ton class fighter with a phenomenal 62 Kn dry thrust should easily out class gripen of 8 ton weight with almost similar power engine. I agree for the first time that We do not need gripen. Rest of the goodies of Gripen can be easily incorporated in Tejas. Tejas has top class AESA and EW already coming in.
     
  7. HariPrasad

    HariPrasad Lieutenant FULL MEMBER

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    No Not at all. JF 17 's 8.5 g figure is only on paper , tejas has already done 8g + and gripen as far as I read has 8.5 g. May be it is gripen d and not Gripen NG.
     
  8. vstol jockey

    vstol jockey Colonel MILITARY STRATEGIST

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    Its metallurgy+pressure ratios.
    Ahead of Russia but behind Europe and US.
    Every engine is designed with a set of parameters based on fived values of pressure, temperature and thrust. These values decide the mass flow for any engine and based on that you design the fan, bypass ratio and pressure ratios. If you have lower temperature and higher pressure compared to the benchmark value, the thrust will be higher for an engine but if it is reverse of it, the thrust reduction will happen. A flat rated engine is one in which these values are deliberately chosen to be worse than standard atmospheric conditions called ISA.
    So what we do for flat rating is that we design an engine for a much higher thrust but limit it to a lower thrust rating till its flat rated temperature. It means that even if the atmospheric conditions are better, the engine will still produce the thrust for which it is rated. The thrust will reduce once you go above the flat rating temperature.
    upload_2016-12-29_17-9-14.png

    As can been seen, every engine can produce a higher thrust compared to its rated value but it is kept restricted to a value which is its rated value. Any engine which is rated for a higher temperature thru flat rating can easily produce a higher thrust the moment you move to the left of the thrust curve by revising the flat rating.
     
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  9. Ripcord322

    Ripcord322 Lieutenant FULL MEMBER

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    Here we are again....I remember Passionate discussions about LCA... And how they died down... Slow.... Slowly... With the delays.... MK1A order according to HAL will be done by 2028...2028...yeah...2028

    It's not the fighters Specifications that worry me... It's the Management of the Project.... HAL recently floated a tender for the MK2... The Airforce didn't want the MK2.... The MK1A is yet to have its 1st flight... Heck the MK1 hasn't even got the FOC yet... Such Tremendous delays....and again with an order of JUST 80 aircrafts... The Air Force has truly laid waste to the decades of work put on it... What good will 80 Light Fighters Do.... We even have Heavier Fighters like the MKI in greater numbers...But of course rather than focusing on Programs like

    ==> NISHANT (The whole fleet crashed... It was a basic UAV)
    ==> IMRH (Still just a computer model with HAL)
    ==> LUH (Many more delays left...)
    ==> LCH (When will it be inducted... Fast Track it... Or else it goes down the same path as LCA)
    ==> LCA MK. 2 (AF pulled the plug)
    ==> NLCA MK. 2 (IN Pulled the plug)
    ==> AMCA (Funds allocated yet!?)
    ==> NAL SARAS... (Started 1991..Useless Now, Men give their lives for it.)
    ==> IRJ/RTA-70 (Canceled)
    ==> MALE UCAV (UCAV to TAPAS NOW.. No where near Induction )
    ==> MTA (Cancelled)
    ==> FGFA ( :lol: )
    ==> IJT ( :lol: )


    We want IMPORTS... Millions of dollars on even the basic traners like the HAWK... We just can't do without IMPORTS, let DESI projects be mismanaged we want IMPORTS.And of course making fun of the Chinese...

    There are so many labs doing a good job... And then... We have HAL/ADA/NAL... And their Management...

    We have great potential... We can at least build piston engines...small jet engines.... Medium Lift Choppers...Medium Combat Jets... Light Transport Crafts.. (Like Brazil)... It's sooooo dissapointing....We even import even BASIC things now...

    What is the GOVT. and Top Management doing about the above mentioned projects....!?

    Anyway... Lets wish them luck...
     
    Last edited: Dec 29, 2016
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  10. randomradio

    randomradio Mod Staff Member MODERATOR

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    Partly true considering the Russians have moved into ceramic matrix composites.

    The 117 or the Type 30, one of them, has already achieved inlet temperatures of 2200+K.
     
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  11. Ankit Kumar 001

    Ankit Kumar 001 Major Technical Analyst

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    One Problem is/was Harmonic Motion of high order [7~11] , at higher thrusts ,which could easily lead to destruction ,and in absence of advanced testing facilities here, it wasn't detected earlier.
     
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  12. lca-fan

    lca-fan Major SENIOR MEMBER

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    Russia Left Out From Major Indian Tender for EW Suites

    MILITARY & INTELLIGENCE 19:27 28.12.2016
    India has asked a Russian vendor to quote for AESA radars but overlooked it while asking for participation in the tender for EW self-protection jammer pods.
    New Delhi (Sputnik) — India has requested for quotations from seven global manufacturers for electronic warfare (EW) self-protection suites to accelerate the upgrading of its self-developed light combat aircraft Tejas Mark-1A.
    Interestingly, India did not send a request to the Russian manufacturer Rosoboronexport though it has been selected to compete in the tender for AESA radars for the same aircraft. Sources told Sputnik that EW systems worth $200 million will be selected by April next year. Hindustan Aeronautics Limited (HAL), the designated local assembler of Tejas, will purchase a total of 83 EW suites for series production that is expected to start from 2019.
    The tender has strict conditions for transfer of technology and local manufacturing. India has also sought exclusive worldwide sales and product support rights for the LCA MK1A aircraft or its variants fitted with the EW suite. It will also have the right to use the suite or its adapted versions on any other airborne platform designed or produced by HAL for use by Indian defense customers.
    Bids have been invited from Elbit Systems and Elta Systems (both Israel), Saab (Sweden), Thales (France), Elettronica s.p.a (Italy), Raytheon (US) and Indra Systems (Spain). HAL will make outright purchase of 24 sets of fully formed EW suites and locally manufacture another 48 based on a combination of kits supplied by the vendor. “[The] Vendor shall ensure that HAL work content shall be more than or equal to 40 per cent by value of the unit price of each EW Suite,” reads the tender issued by HAL. LCA TEJAS is a light weight, single engine combat jet optimized for air superiority and ground attack roles. This 4.5+ generation combat aircraft has a carbon composite frame, digital flight control system; glass cockpit and digital avionics. Last month, the Indian Defense Ministry had cleared the ``acceptance of necessity’’ (AoN) for the procurement of 83 upgraded versions of Tejas for $7.7 billion.

    https://sputniknews.com/military/201612281049080844-india-russia-electronic-warfare/
     
  13. Picdelamirand-oil

    Picdelamirand-oil Lt. Colonel MILITARY STRATEGIST

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    48+24= 72 EW suite for 83 Tejas??!
     
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  14. somedude

    somedude Captain FULL MEMBER

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    If you count that you'll have about a dozen Tejas just for training, then it's reasonable.
     
  15. Picdelamirand-oil

    Picdelamirand-oil Lt. Colonel MILITARY STRATEGIST

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    But you need EW suite to train! Basic training is done on an other plane.
     
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