AMCA - Advanced Medium Combat Aircraft (HAL)

[Lonewolf]

Do nanotechnology have some application in aero engine , some catalytic combustor based aero engine ?

 

[FalconSlayers]

Nice to hope. I but seriously have doubts on that open engine nozzles.

Active cooling of the nozzles can help in it easily, but then there is only F-22 Raptor that has that kind of nozzles.

Lockheed Martin F-35,

Chengdu J-20,

Mitsubishi X-2,

KAI KF-X,

AVIC FC-31,

Sukhoi Su-57

HAL AMCA

all have the same circular nozzles. All stealth aircraft have same round nozzles with only exception being F-22.

 

[shuvo@y2k10]

Regarding RAM coating:
Old technology (used in F-22) was ferrite based RAM coating. Even DRDO/IITs acheived ferrite RAM coatings way back in 2004-05 itself.

New technology (used in F-35) is metamaterial based RAS and FSS structures. DRDO/IIT kanpur has developed it recently and it will be used in AMCA.

Also Square nozzles Found in F-22 is an improvement over round nozzles gave in terms of RCS reduction, at a cost of reduced thrust. So it is a compromise. Then came chevron sawtooth nozzles found in F-35. It helps in noise reduction to a great extend will be implemented in all future fifth generation fighter jets. In conjunction cooling channels are provided to reduce IR signature

 

[Ghost hale]

Active cooling of the nozzles can help in it easily, but then there is only F-22 Raptor that has that kind of nozzles.

all have the same circular nozzles. All stealth aircraft have same round nozzles with only exception being F-22.

As per open source info F22 have better stealth characteristics than F35 even with old RAM coating. The maintenance, weight and cost of nozzle design with reduced output is the compromise.

Then came chevron sawtooth nozzles found in F-35. It helps in noise reduction to a great extend will be implemented in all future fifth generation fighter jets. In conjunction cooling channels are provided to reduce IR signature

Still F22 have better RCS which clearly say how much superior that design choice is.

 

[FalconSlayers]

@Bleh regarding aesthetics, I would love if final AMCA looks like this...

Dreams aside... I’ve noticed

 

[Lonewolf]

@Bleh regarding aesthetics, I would love if final AMCA looks like this...
View attachment 78679


Dreams aside... I’ve noticed

Could see in mk 2 , cause it would be on heavier side .

 

[FalconSlayers]

@Bleh regarding aesthetics, I would love if final AMCA looks like this...
View attachment 78679


Dreams aside... I’ve noticed

*Dreams aside, I’ve noticed the AMCA intake is very small in comparison to other stealth sircraft employing it and has a very small bumb for DSI that hardly makes any difference.

 

[shuvo@y2k10]

*Dreams aside, I’ve noticed the AMCA intake is very small in comparison to other stealth sircraft employing it and has a very small bumb for DSI that hardly makes any difference.

I think the bump size is related to the amount of air-inflow into the DSI intake. More the bump, less is the air inflow into the intake, and less air reaches the engine and thereby less speed the aircraft can attain.
So the DSI bump is designed as per maximum speed as well as RCS requirement.

(Though I could be wrong in this regard.)

Aircrafts like F-35 and J-20 with bigger DSI bumps can attain a maximum speed less than Mach 2.0. Let us see what speed AMCA can acheive with smaller bump.

 

[FalconSlayers]

What about the Distributed Aperture System for AMCA?

 

[Ghost hale]

I think the bump size is related to the amount of air-inflow into the DSI intake. More the bump, less is the air inflow into the intake, and less air reaches the engine and thereby less speed the aircraft can attain.
So the DSI bump is designed as per maximum speed as well as RCS requirement.

(Though I could be wrong in this regard.)

Aircrafts like F-35 and J-20 with bigger DSI bumps can attain a maximum speed less than Mach 2.0. Let us see what speed AMCA can acheive with smaller bump.

Bump is to restrict supersonic speed to subsonic before entering engine. Few have speed over 2 Mach with DSI but as per current info speed of AMCA will be restricted @1.8 Mach or max 2 Mach.

What about the Distributed Aperture System for AMCA?

DRDO has already developed DSA and a fine tuned version of same will be in AMCA.

 

[FalconSlayers]

Bump is to restrict supersonic speed to subsonic before entering engine. Few have speed over 2 Mach with DSI but as per current info speed of AMCA will be restricted @1.8 Mach or max 2 Mach.

DRDO has already developed DSA and a fine tuned version of same will be in AMCA.

Can you give any substance to prove that we already have a Distributed Aperture System ready or not?

 

[Ghost hale]

Can you give any substance to prove that we already have a Distributed Aperture System ready or not?

Dual Colour Missile Approach Warning System (DCMAWS) for Fighter Aircraft | Defence Research and Development Organisation - DRDO, Ministry of Defence, Government of India

Dual Colour MAWS system operates in the mid IR band for identifying the approaching missiles of all generations. The spectral information of two colors is used to discriminate efficiently between sunlight reflections, background radiation and the radiation from the missile.

www.drdo.gov.in

It will be further improved before AMCA.

 

[FalconSlayers]

Dual Colour Missile Approach Warning System (DCMAWS) for Fighter Aircraft | Defence Research and Development Organisation - DRDO, Ministry of Defence, Government of India

Dual Colour MAWS system operates in the mid IR band for identifying the approaching missiles of all generations. The spectral information of two colors is used to discriminate efficiently between sunlight reflections, background radiation and the radiation from the missile.

www.drdo.gov.in

It will be further improved before AMCA.

So a DCMAWS is what a DAS is?
Cuz I’ve heard these are integrated in Su-30MKI as well in some numbers.

 

[Ghost hale]

So a DCMAWS is what a DAS is?
Cuz I’ve heard these are integrated in Su-30MKI as well in some numbers.

Yes, Its one of the most significant part. Rest are irst and and other minor sections. This was planned from 2005 itself. Even for tejas they have MAYAVI EW suite which have this. In Su30 MKI they don't have complete system because of weight issues and even it is not integrated to all Su30s.

 

[FalconSlayers]

Yes, Its one of the most significant part. Rest are irst and and other minor sections. This was planned from 2005 itself. Even for tejas they have MAYAVI EW suite which have this. In Su30 MKI they don't have complete system because of weight issues and even it is not integrated to all Su30s.

So DAS is 100% certain to be there, now can you tell me the EW Suite of AMCA and the number of T/R Modules it’s radar can pack in the nose cone?

 

[Ghost hale]

So DAS is 100% certain to be there, now can you tell me the EW Suite of AMCA and the number of T/R Modules it’s radar can pack in the nose cone?

Both not finalised yet. But radar would surely be uttam mk2 which will be GaN based.

 

[FalconSlayers]

Both not finalised yet. But radar would surely be uttam mk2 which will be GaN based.

No. Of T/R Modules it can have?

 

[Lonewolf]

So DAS is 100% certain to be there, now can you tell me the EW Suite of AMCA and the number of T/R Modules it’s radar can pack in the nose cone?

T\ r module will be about 1400 , if they have really miniaturized like reported earlier , also module will be gan so won't be overkill to compare it to top line radar , also they were thinking of cheek mounted radar panel , and main aesa will be a stearable mount .

 

[FalconSlayers]

T\ r module will be about 1400 , if they have really miniaturized like reported earlier , also module will be gan so won't be overkill to compare it to top line radar , also they were thinking of cheek mounted radar panel , and main aesa will be a stearable mount .

What do you mean by overkill?

 

[Ghost hale]

No. Of T/R Modules it can have?

No data yet.

IAF Backs Upscaled UTTAM Aesa Radar for the Su-30MKI fleet – Indian Defence Research Wing

idrw.org

This was last i heard.