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    AMCA - Advanced Medium Combat Aircraft (HAL)

    Most interesting info from was this new drone Tactical Interdiction and Attack - Air Vehicle (TIA-AV 50). Does anyone have that Newspace poster with the new Drones, I seem to have spotted a TIA-AV there.
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    AMCA - Advanced Medium Combat Aircraft (HAL)

    I think its safe to say AMCA will be stealthier than F22 mainly due to recent advancements in material sciences. Take for example Metamaterials demonstrated in 2009 for the first time. It allowed polarization insensitive significant broadband radar absorbtion in an ultrathin material, they...
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    AMCA - Advanced Medium Combat Aircraft (HAL)

    Elliptical has greater mass entrainment than rectangular at same Nozzle Pressure Ratio. So it gives out less ir signature in 3-5 micro meter in which many ir missiles operate
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    AMCA - Advanced Medium Combat Aircraft (HAL)

    There is something odd with this EOTS; its not made of transparent sapphire. It has two circular apertures on front and back.
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    AMCA - Advanced Medium Combat Aircraft (HAL)

    There is one guy in IIT K and his team have developed switchable ir absorbers and a few other ir supressing materials in mwir region
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    AMCA - Advanced Medium Combat Aircraft (HAL)

    https://www.nature.com/articles/s41598-017-06749-0 The korean one.
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    AMCA - Advanced Medium Combat Aircraft (HAL)

    Post it if you have found any.
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    AMCA - Advanced Medium Combat Aircraft (HAL)

    That's the problem there is very little research info on ir meta materials in indian research instittutes. I found just one guy in IIT K and his team is working on it. On the other hand there is truckloads on radar absorbers in india.
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    AMCA - Advanced Medium Combat Aircraft (HAL)

    Nope. I have that particular researchpaper. Its available in full to anyone
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    AMCA - Advanced Medium Combat Aircraft (HAL)

    Nope but they have a great meta material that absorbs 92% in entire MWIR and LWIR bands.
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    AMCA - Advanced Medium Combat Aircraft (HAL)

    The Koreans have a really good IR absorbent meta material we should cooperate on that.
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    AMCA - Advanced Medium Combat Aircraft (HAL)

    Looked through the research once more. They worked on nozzle with elliptic exit and elliptic with aft deck (ie lower bit sticking out). Elliptic has the highest mass entrainement (ie less radiation in 3-5 micrometer band) and elliptic with aft deck has less noise 26dB less. It also has a shorter...
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    AMCA - Advanced Medium Combat Aircraft (HAL)

    There has been much research in mass entrenchment of ellptical nozzle and serpentine nozzle for stealth
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    AMCA - Advanced Medium Combat Aircraft (HAL)

    No I mean official proof ,that is, directly from Horse's Mouth. AMCA Project Director skipped the question in DDR interveiw just answered there will be something similar to DAS.
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    AMCA - Advanced Medium Combat Aircraft (HAL)

    DAS is confirmed , Only EOTS is in doubt. As for 2024 rollout 4 parts were already fabricated by Air India 2021.
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    AMCA - Advanced Medium Combat Aircraft (HAL)

    AMCA radar is at PDR stage afaik.
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    AMCA - Advanced Medium Combat Aircraft (HAL)

    Check Post #7540
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    AMCA - Advanced Medium Combat Aircraft (HAL)

    Look at the article a few pages back. This Nal Hybrid material absorbs more than 90% of incoming radar waves in 1 to 60 Ghz whilst being 1.67 mm thick. LM signature control material needs to be tailored to a specific frequency bands via orientation of CNTs etc etc. And is much much thicker...
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    AMCA - Advanced Medium Combat Aircraft (HAL)

    This one: https://aip.scitation.org/doi/10.1063/1.5001511 They are trying out some packaging as well on this. https://ieeexplore.ieee.org/document/8990120 They also have a 99% absorption ITO based one, dunno if its transparent or not: https://ieeexplore.ieee.org/document/8738776
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    AMCA - Advanced Medium Combat Aircraft (HAL)

    AMCA ram is probably already selected, so they may have overcome these obstacles or went ahead with something else. I also found a really nice wideband transparent radar absorber by IIT K guys they possible can use those in the canopy.
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