Indian Military News, Reports, Data, etc.

Xizor

Xizor

Captain
Registered Member
HaldilalSDF said:
Yeah a Stealthy Strike Aircraft atleast in the current iteration.
Here some documents.
View attachment 67934View attachment 67935View attachment 67936
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And what are these documents supposed to be ?
They don't offer much insight into RAM for stealth aircraft application, rather just Radar Absorbing materials in general.
I'm surprised to see ADA involved in this Because i see no effect of thermal stress on the "novel" FSS surface.
Radar Absorbing materials study isnt new.

For example. The following is a Chinese paper published on 2012.
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"the proposed absorber can provide a 10-dB radar cross section (RCS) reduction for the conducting plate over the frequency range of 10.7-29 GHz, which is equivalent to a relative bandwidth of 92.2%"
The "FSS" structure has a thickness of just 2 mm.

This is in contrast with the Indian studies and their numbers.
What more, they seem to be just students aiming for Ph.d.
Do note that I don't think the aforementioned Chinese study has been applied on aircrafts either.

Will the skin be able to tolerate the stresses on flight is the big question. A huge chasm exists between academic papers and reliable Military application.
 
Xizor

Xizor

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HaldilalSDF said:
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I don't think this RC Aircraft has the heft and merit to be a "Defense project".

The microjet turbine used isn't even indigenous. They are an off the shelf turbine supplied by an American company Kingtech.
They are usually bought by RC enthusiasts. Many youtube videos are there of realistic looking RC fighter aircrafts being flown.

One guy, John Wright built his own microjet Turbine for his RC flying wing.
 
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HaldilalSDF

HaldilalSDF

Junior Member
Registered Member
Xsizor said:
And what are these documents supposed to be ?
They don't offer much insight into RAM for stealth aircraft application, rather just Radar Absorbing materials in general.
I'm surprised to see ADA involved in this Because i see no effect of thermal stress on the "novel" FSS surface.
Radar Absorbing materials study isnt new.

For example. The following is a Chinese paper published on 2012.
Please, Log in or Register to view URLs content!

"the proposed absorber can provide a 10-dB radar cross section (RCS) reduction for the conducting plate over the frequency range of 10.7-29 GHz, which is equivalent to a relative bandwidth of 92.2%"
The "FSS" structure has a thickness of just 2 mm.

This is in contrast with the Indian studies and their numbers.
What more, they seem to be just students aiming for Ph.d.
Do note that I don't think the aforementioned Chinese study has been applied on aircrafts either.

Will the skin be able to tolerate the stresses on flight is the big question. A huge chasm exists between academic papers and reliable Military application.
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I never said anything here.
 
Xizor

Xizor

Captain
Registered Member
HaldilalSDF said:
I never said anything here.
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Don't need to. I'm merely commenting my take on the post you made. I welcome your observations and take on these.

That these documents and studies don't really reflect the development path or level of Indian stealth fighter/bomber programs is my belief. The real developments could be hidden - maybe even getting backstage help from Israel, France, US etc.

Why not? Why not utilize help of foreign established players when you are part of an informal alliance, when you already buy billions worth of equipments, when you already sign lots of treaties and whatnot.
 
steel21

steel21

Junior Member
Registered Member
ougoah said:
Materials are a big deal. Metamaterials feature extensively on the skin of J-20 and F-35 as disclosed at least for the J-20. The hint is that VLO and the use of metamaterials go hand in hand but how is rather confidential. So far we've not seen any other nation outside of China that has publicly talked about this particular sort of stealth "coating" metamaterials for unknown electromagnetic properties. There are many solutions and methods of course but dismissing things as not that big a deal when the planning phase has barely even started... sorry but AMCA prototypes is so far away I doubt many on these military forums will still be alive to see it in IAF service if it ever gets to IAF service. Many members of these military forums are rather young too. I will happily put a bet that AMCA prototype as a genuinely domestic design i.e. not a rebranded F-35 or Su-57 like FGFA, will not fly until well after 2030 with service into IAF well after 2040, if the program delivers.

Fanboys talking about 2025 prototype flight are being mislead by the authorities.

Internal bays are nothing structurally like central pylons. You have totally ignored the doors, their mechanisms, the rather dynamic ejection parameters. It absolutely is not like covering a fuselage tunnel because the engine covers and inlet designs need to be completely redesigned.

If it was as simple as you stated, then it should be easy to modify a design like a Flanker or Fulcrum with a cover and door where the current fuselage tunnels are. Those fighters will only have internal bays with at best two missiles worth of volume. The 5th gens have at least 4 large MRAAMs worth of carriage if not quite a lot more. That's even ignoring the mechanisms for the doors and these doors themselves need a lot of reinforcing to pull those turns.

Stealth technology will probably change quite a lot in the coming decades as better sensors become available and revolutionary technology begin to defeat the current state of stealth technologies. I would be surprised if Indian efforts will still be using RAM coatings then.
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Yup. I used to be a system engineer before being pulled into policy.

There are so many dependencies and supply chain, quality assurance issues that it would be best if you can finish it in 10-15 year, because there is so much that gets lost if some key dude gets promoted or move on.

Configuration management and documentation alone becomes a department onto itself.

These kids that yaps about how easy seldom have done any real development or POM cycle battles.
 
steel21

steel21

Junior Member
Registered Member
HaldilalSDF said:
but AMCA has got INSANE over-the-shoulder & over-the-nose visibility.

.................... It's only gonna be used for for BVR sniping & stealthy strike missions. Closest A2A engagement would be Astra-IR launched from 40-50 km away.
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So what's the point of INSANE over the shoulder and nose visibility if all you're gonna do is BVR sniping?
 
HaldilalSDF

HaldilalSDF

Junior Member
Registered Member
And Well Simply because it's a good thing to have in a platform! Later its job will change to full time air-superiority action you don't wanna redo to cockpit in Mark2.
 
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