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Light Stealth Aircraft (LSA) - Concept Aircraft

Discussion in 'Indian Air Force' started by randomradio, Mar 19, 2016.

  1. Sathya

    Sathya Lieutenant FULL MEMBER

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    Sir ,
    Please concentrate only on your LSA and steps to bring itsome fruition.
    Don't mind even if mods support foreign aircraft or anything. It's every one s personal choice.
    By making statements against many people , company or country. . It just breeds more unfavours ..
    It's best you ignore all whom u don't like.
    Also as a reader , pleasure of reading the LSA thread is reduced. And we don't like u wasting your thought process.
     
    IndiranChandiran and HariPrasad like this.
  2. HariPrasad

    HariPrasad Lieutenant FULL MEMBER

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    Well come sir,

    We thought that we lost you. Nice to see you back.

    A small advice. Pl be patient and do not be too aggressive. Some time it will be counterproductive particularly when we have a project like LSA on hand. We we are in a big project, we have to be diplomatic and we can not behave like normal people.

    Nice to see you back once again.
     
    Last edited: Mar 18, 2017
    Sathya likes this.
  3. HariPrasad

    HariPrasad Lieutenant FULL MEMBER

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    I believe that T/W ratio should improve a little with increase in power because of simple reason that weight do not increase proportionately with power.
     
  4. HariPrasad

    HariPrasad Lieutenant FULL MEMBER

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    40 kn 62 kn configuration is not required. 35/57.5 should suffice because it will be a total 70 KN dry and 115 kN after burner which is sufficient for LSA as @vstol jockey sir has planned 72 kn Dry and 108 KN wet EJ 230 for LSA.
     
  5. vstol jockey

    vstol jockey Colonel MILITARY STRATEGIST

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    The LSA wingspan is revised to 9.2m to give it an aspect ratio of 2.61 to ensure that with 50* sweep, LSA has same lift curve as that of Rafale. The Empty weight for single engine LSA with 13.75m length was supposed to be 6250kgs which will rise to 6750kgs with 14.1m length and twin configuration. This increase of 0.25m in length allows me to carry one Brahmos Mini with 5m length or one SCALP with 5.1m length internally in main bay while still retaining 6AAMs.
     
  6. Immanuel

    Immanuel 2nd Lieutant FULL MEMBER

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    Please, it's one thing to call LSA a brilliant design but totally another to call other 5th gen designs 3rd rate US designs. At first impression though the LSA looks like a stealth JF-17, do you mean to say that the chinese have better designs?

    [​IMG]

    [​IMG]
     
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  7. vstol jockey

    vstol jockey Colonel MILITARY STRATEGIST

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    Let me just compare Gripen NG with LSA for you guys. Posted below is the load out of Gripen NG. LSA will carry all these weapons in its internal bays leaving aside the wingtip missiles as LSA also has wingtip missiles.. The red crosses are what LSA cant carry and the circles are what LSA can carry in addition on the pylons depicted.
    upload_2017-3-22_18-30-32.png
    This is only about the internal capability of LSA. The drop tanks will be replaced by CFTs for LSA. As you can see, Gripen NG stands no chance compared to LSA.
     
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  8. vstol jockey

    vstol jockey Colonel MILITARY STRATEGIST

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    I have repeatedly stated that these are old designs and not the final ones. The final ones have prominent CHINE and not LERX.
     
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  9. vstol jockey

    vstol jockey Colonel MILITARY STRATEGIST

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    The decision to seriously consider twin engine option is based on the fact that HTFE-40 engine will be very light compared to equivalent engine like Honeywell F125X. two of them will weigh just about 1100kgs while EJ-230 is also expected to weigh same. But the best part about HTFE-40 is that two of them will have better SFC than single EJ-230 and the normal maths about single vs twin is that if you use twin engine instead of single, your EW will go up by the difference in the weight of the engines+50% of the weight of the engine for twin configuration. So it means that with twin engines and single engine weights being same, LSA twin empty weight will go up by 550/2=275kgs over and above the weight of single engine LSA.
     
  10. vstol jockey

    vstol jockey Colonel MILITARY STRATEGIST

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    What you see below is what LSA can carry internally with just one BVRAAM short.
    upload_2017-3-22_18-44-20.png
     
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  11. vstol jockey

    vstol jockey Colonel MILITARY STRATEGIST

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    Shown below are the various possible configurations for Typhoon and LSA better load out compared to Typhoon and some of these configurations like Air Superiority, Maritime Strike and strategic attack will be flown in stealth configuration by LSA.
    upload_2017-3-22_19-1-55.png
     
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  12. HariPrasad

    HariPrasad Lieutenant FULL MEMBER

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    It is 0.35 m increase in length. I well come this. I had advocated this strongly. Increase in weight by 500 KG with some 0.35 m increase in length is a bit too much. Try to keep it bellow 6.5 in any case else it will have a penalty.
     
  13. vstol jockey

    vstol jockey Colonel MILITARY STRATEGIST

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    Weight increase is on two counts, increase in length and twin engine configuration.
     
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  14. randomradio

    randomradio Mod Staff Member MODERATOR

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    I'm not sure Brahmos-NG will come up to 5m, I've heard it's 6m.
     
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  15. vstol jockey

    vstol jockey Colonel MILITARY STRATEGIST

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    If they have to bring its weight down to 1.5tons, the length can't be more than 5m. with 50cms diameter.
     
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