India AMCA Program

[Bhartiya Sainik]

The watermark removes itself once the pic is hosted in-line with the post itself. See for yourself:

https://defencehub.live/attachments/1723049057708-jpeg.69992/

etc.

It (watermark during attachment process) is artifact from earlier issue on forum.

Ok, let's see.

 

[Bhartiya Sainik]

Before we talk further on shape, structure, RCS, etc of AMCA further, let's have a look of 3D CAD designs made by 5 people i have spotted so far :
1- Murli Yadav (social media ID not available)
(defenceforumindia.com/members/jon-arts.18541/)
2- Ankur Singh Chauhan (x.com/Anx450z)
(DFI - defenceforumindia.com/members/wahmanrespector.37183/)
3- Kuntal Biswas (x.com/Kuntal__biswas)
(defenceforumindia.com/members/16257/)
4- Satwik Sadhukhan (x.com/i_m_satwikk)
5- Harshal Pal (x.com/HarshalPal5)
(defenceforumindia.com/members/31984/)

If anyone of you know them & other artists including international ones, please invite them here.

I will post only selected pics, rest can be checked on their Twitter, DFI, etc posts. Some are also present on 3D sites like Turbosquid, Artstation, Sketchfab, Behance, etc.
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Murli Yadav

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Satwik Sadhukhan

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Harshal Pal

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Ankur Singh Chauhan

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Kuntal Biswas

Older design

Revised design

 

[Bhartiya Sainik]

SHAPE OF AIRCRAFT, CHANGE IN ORIENTATION, AREAS OF APPLICATION OF RAM

In war time, Fighter jets might plan a sortie waypoints as per fixed assets like airbases, SAMs, terrain, etc. So the jet can maintain flight at certain altitude & heading to have minimum RCS towards certain areas.

But the dynamic assets like moving ground SAMs, AWACS, enemy fighter jets can force to tactically alter the plan, waypoints & maneuver in roll, pitch, yaw axis which increases RCS towards certain angles.

The 5gen jets still use rudders but canted at angle matching the fuselage side wall. from the diagrams above, on rolling & banking, the surface area at that angle increases a lot for few seconds. The entire body is reflecting some RF energy.
This may compel to apply RAM on entire ventral/bottom side.

Earlier in capitalist country like USA, private companies developed their version of RAS & RAM whose quality would differ & cost of application & maintenance would be very high. Special machines would be needed to wrap the jet with RAM tapes, attach RAm panels, or paint the RAM.
Today multiple nations have developed their own RAS, RAM with easier application & reduced cost.

But bcoz of nature of RF radiation is not simple, & ultimately a fighter jet has to do so much maneuvering, sometimes to evade enemy jets & missiles, that RAM may have to be applied almost everywhere. So people usually prioritise only front RCS but side, top, back RCS now would become equal priority.

 

[IC3M@N FX]

One question what do you do if you receive sanctions or embargoes on certain parts in the aircraft that come from abroad, e.g. for strategic political reasons?
The Tejas is full of foreign parts as you know.
The engine cannot be Indian for the next few years.
The development of a Generation 4+ or 5 engine alone costs at least 10-15 years, depending on the complexity of the engine.
In addition, there is the blisk technology in the engine, which consists of various alloys, composite materials and crystals in one piece, which have to withstand very high temperatures and pressures - nobody simply gives this away as a technology transfer.

What about the supply chains of the parts alone that would have to be produced domestically, just getting these defense companies off the ground and developing all the parts costs a lot of money and time.

I say that because Turkey has been under sanctions for several years and has built up its own arms industry. They are now at 85-90% to produce everything themselves.
The last 10% are the worst, because it's about absolute high technology, such as semiconductors, engines, composite materials, stealth alloys with coatings that enhance the effect even more.
How will India solve this