Naval LCA

Discussion in 'Indian Navy' started by sathya, Jul 20, 2011.

  1. shiphone

    shiphone Senior Member Senior Member

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    that F-15 don't have FBW but the hybrid electronic/mechanical system...
    the true 'FBW' was Firstly introduced on the F-15E export varient-F-15SA.

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  2. shiphone

    shiphone Senior Member Senior Member

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    oh...and we forgot to celebrate that great "conversion" earlier...we were waiting for some kind of correction all the day.

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    yeah...the famous idiot of this forum could convert the 'kg' to 'lb' of fuel only but forgot the 'kg/lbf' conversion of thrust...LOL...

    in his big brain....1.96kg/kg h ====>1.96X2.2046 lb/kg h===> 4.32 lb / lb h ???????

    QQ截图20190518222833.jpg


    some indian members would 'like' this math? hey,people... don't humiliate your proud education system

    isn't that still 1.96 lb/lbf h and 0.78 lb/lbf h for RD33MK?...LOL

    BTW..the the Bypass ratio datas here, which also somehow could explains the difference of military thrust SFC and wet thrust SFC, and M88 has a higher Turbine inlet temperature of its design

    RD33: 0.49:1
    M88: 0.3: 1
    F404: 0.34: 1
     
    Last edited: May 18, 2019
  3. IndianHawk

    IndianHawk Senior Member Senior Member

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    What is this talk about mig29k replacement.
    They are going nowhere. There issues have been largely resolved and they are formidable at what they do. Can carry 5ton+ payload and have powerful radar with ols and modern cockpit.
    It is way better than Russian su33 and Chinese carrier bird which can't stop crashing.

    The RFI for 57 naval bird was for third carrier which is a decade away and also to hedge against nlca mk1.

    45 mig 29k + nlca mk2 (by 2027) are sufficient for present 2 carriers.
    Carrier aircrafts are not plug and play.
    It takes years to operationalize an squadron on moving carrier. To develop doctrine to test real performance and tactics and to solve teething issues. Will navy give away hard work of years just like that. No chance. Mig29k will be operational for their full life. They will be complimented by nlca mk2 when it's ready.

    As for RFI of 57 jets it will take 3-4 years to evaluate the birds to come to a decision and then pricing negotiations tech transfer / offsets etc. Then it will take 4-5 years to deliver all 57 birds to India and then it will take 4-5 years to operationalize the birds on carrier with full doctrine development and tactics .
    Only then will we have an operational fighter.

    So no new naval bird is coming before 2030 other than nlca mk2.


    Sent from my C103 using Tapatalk
     
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  4. WolfPack86

    WolfPack86 Senior Member Senior Member

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  5. Kchontha

    Kchontha Regular Member

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  6. Thrishul

    Thrishul Regular Member

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    Does anyone have any info on the parameters on the LCA-N Mk2. Size and weight?
     
  7. IndianHawk

    IndianHawk Senior Member Senior Member

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    Size 14.6 m length 4.8 m heights width 8.something.

    Weight 7ton empty , 16.5 ton mtow. Payload 6ton+

    Sent from my C103 using Tapatalk
     
  8. Thrishul

    Thrishul Regular Member

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    Thank
    s, by the way, do you have a link to the source?
     
  9. IndianHawk

    IndianHawk Senior Member Senior Member

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  10. Prashant12

    Prashant12 Senior Member Senior Member

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    Classic sight that has welcomed disembarking carrier pilots since 1960. The dissimilar twins against the backdrop of "Grande Island" at the threshold of INS Hansa.

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  11. Prashant12

    Prashant12 Senior Member Senior Member

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  12. Prashant12

    Prashant12 Senior Member Senior Member

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    A Video testimony to the month long ardous trials undertaken by Team LCA (Navy).

    Watch carefully, each frame has meaning and those with hawk eyes, know what we mean.

    The video encapsulates our massive effort from the recent outing at INS Hansa, highlighting the efforts from Test Pilots, Test Engineers, System Designers, System monitoring engineers, Instrumentation Engineers, Aircraft Supervisors, Technicians,whole lot of ground staffs from GSL, INAS Hansa supporting staffs and the list continues. The team has put all the efforts to provide all the cutting edge technologies, starting from innovative flight data analysis techniques to high speed networked imaging systems to extensive instrumentation schemes on the aircraft to provide every single bit of information on the naval flight test effort, to the flight test crew to achieve all they have been striving for mitigating all the risks envolved.

     
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  13. Enquirer

    Enquirer Senior Member Senior Member

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    So, no arrested landing as yet?!!!
     
  14. Narasimh

    Narasimh Regular Member

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    Great!.. but looks like lot more work to be done on stable arrested recovery.. It felt like it might topple in one of the wire engagements.
     
  15. Aman kumar

    Aman kumar Regular Member

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    Also didn't Tejas take-off have to be short?
    It took around 12 sec to take-off
     
  16. patriots

    patriots Defense lover Senior Member

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    These pictures need to be discussed in more detail here.
    1. Glad that you all liked the image captions. Comes from a TP. Another TP commented. This makes me happy. Because ADA’s apathy to any kind of marketing is something I don’t understand. SAAB has more pictures and brochures on the Sea Gripen. ADA wants people to “focus” on work.
    2. These are the first pictures of the NP1 and NP2 in the same frame that I have seen. Not just that the Mig-29Ks joined the party. It shows the Navy’s support for the program and the feeling that Navy pilots have towards this upcoming baby.
    3. There are lots of new things. First look at the LEVcons. As has been discussed earlier, they are deflected (currently by the pilot) based on the flight condition.
    4. They are now equipped to fully operate during day and night. The lights on the LGs are cues for the landing officer on deck.
    5. They have already practiced touch and go with the arrestor hook deployed. It was very precise. Had the wires been there it would have been a trapped. The airplane lifted off soon afterwards meaning that bolters will be fine.
    6. They have checked the tire bruising with wires deployed (hook not deployed).
    7. The only thing left is live trap, and then onto VikAd



    They will trap in August. I don't know about VikAd(from brf ir)
     
  17. Steven Rogers

    Steven Rogers NaPakiRoaster Senior Member

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    Didn't in the last of the video, the aircraft actually engaged the rope......
     
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  18. patriots

    patriots Defense lover Senior Member

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    03033030300303003040404030
     
  19. Enquirer

    Enquirer Senior Member Senior Member

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    That's just the low speed taxiing culminating in arrested stop.
    There's no video of LCA Navy landing to catch the arresting cable!
     
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  20. patriots

    patriots Defense lover Senior Member

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    https://www.ndtv.com/india-news/lan...-small-team-fights-big-deadline-2051358?amp=1

    Have a read beautifully written by vishnu som

    Landing Tejas Jet On An Aircraft Carrier: Small Team Fights Big Deadline
    हिंदी में पढ़ेंAll India Written by Vishnu Som
    In December, the Defence Ministry is likely to take a call on whether to shut down or continue investing in the project to develop an aircraft carrier-based variant of the indigenous Light Combat Aircraft Tejas.
    Updated : June 11, 2019 14:31 IST
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    Two Light Combat Aircraft-Navy prototypes are being tested; the single-seat variant is shown above

    New Delhi:
    In six months from now, one of India's most ambitious fighter aircraft development programmes may encounter an existential dilemma.

    In December, the Defence Ministry is likely to take a call on whether to shut down or continue investing in the project to develop an aircraft carrier-based variant of the indigenous Light Combat Aircraft Tejas.

    The government, which has already committed Rs 3,500 crore to develop the fighter, needs a straight answer. Will the prototypes of the Tejas-N (Naval), now being tested, eventually result in a multi-role carrier-borne fighter good enough to hold its own against emerging threats in the Indian Ocean region? And can advanced variants of the prototypes, called the LCA-N Mk-2, be developed, manufactured and deployed within a finite period of five to seven years?



    Left with no choice but to speed up their development programme, a small core team of pilots, engineers and design-team members from the Indian Navy, the Aeronautical Design Agency (ADA) and Hindustan Aeronautics Limited (HAL) is fighting against time to clear key development goals - the biggest one, at the moment, is to ensure that the 10.5-tonne fighter, flying at a speed of just under 260 kms (140 knots), can approach a shore-based replica of the deck of an aircraft carrier, descend rapidly, land, snare an arresting wire on the runway with a hook mounted in its fuselage and come to a violent halt in just 130 metres. That's what it takes to make an 'arrested landing' on the deck of an aircraft carrier, a feat achieved by a handful of fighter jets developed in the US, Russia, the UK, France and, more recently, China.

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    Light Combat Aircraft-Navy with arrestor hook deployed in key development trials

    Achieving this successfully, over and over again at the Shore Based Test Facility in Goa, will validate one of the most important design features on the LCA-N - its ability to handle the incredible stresses of making an 'arrested landing' on the deck of an aircraft carrier. It is only once the shore tests are successful that naval test pilots leading the development effort on the LCA-N prototypes can graduate to the next step - making an actual landing on India's only operational aircraft carrier, INS Vikramaditya.

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    Light Combat Aircraft-Navy landing at the Shore Based Test Facility in Goa, a replica of the deck of the Navy's aircraft carrier, INS Vikramaditya

    Key members of the LCA-N development team whom NDTV has spoken to say they have flown 60 sorties in approximately the last one month at the Goa test facility and are ready to commence the key landing trials once monsoon is over. To eventually make an approach onto the deck of INS Vikramaditya, LCA-N engineers and pilots need to be confident that the fighter can slam down onto the deck of a carrier at a 'sink rate' (rate of descent) of approximately 7.5 metres per second (1,500 feet per minute) without being damaged. Though they may not test the fighter to this limit immediately, they need to successfully prove that they can land with a sink rate of 5.6 metres per second to be qualified for carrier trials. At the moment, the jet has been tested with a sink rate of 5.1 metres per second. Engineers and pilots in the project are certain that they are on track to meet their landing certification target.

    Assuming, the LCA-N is qualified to make an approach onto the deck of the INS Vikramaditya, there are still two key hurdles that need to be overcome. Test pilots operating the fighter will need to experience, first hand, the impact of displaced air over the deck of the aircraft carrier moments before it touches down. For a safe arrested landing, the LCA-N will need to hold a near-constant air speed of between 240-260 km (130-140 knots) as it makes its final approach, something which can easily be impacted by variable wind conditions over the deck of the ship. To experience these conditions, test pilots will perform several touch-and- goes on the deck of the Vikramaditya, where they land on the ship but immediately take off without coming to a full stop. A full-fledged arrested landing on the aircraft carrier will only happen once test pilots are certain of the stability of the fighter in making its landing approach and their ability to hold a constant speed as they come in to land.



    There is another, major technical concern which could impact the development of the LCA-N. The arrestor gear on INS Vikramaditya, the mechanical system used to rapidly slow down an aircraft as it lands, has key design differences from the gear installed at the Shore Based Test Facility where the LCA-N is now being tested. Key members of the LCA-N project team are hopeful that this does not impact the project but they will not be certain until they actually land on the ship.

    Finally, the biggest X factor of them all - what a key member of the Tejas-N team describes as the "Acquisition versus Development debate." Though the Navy continues to back the LCA-N project for now, it is also keen to procure 57 fully developed fighters from the US or France and is looking closely at the Boeing F/A-18 E/F 'Hornet' and the Dassault Rafale-M, both of which are tried and tested fighters used extensively in combat. The key question - Will funds be available for both a Tejas-N acquisition and the acquisition of a Western ship-borne fighter?


    Advertisement


    Members of the Team Tejas-N told NDTV they are often asked, "Why do you need to rebuild something that has been built?" The answer to this basic question may go a long way in determining the government's commitment to Make in India, its flagship defence production model besides providing a future to India's most challenging and promising fighter aircraft project currently under development.

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