AMCA - Advanced Medium Combat Aircraft (HAL)

[SavageKing456]

I've been hearing that the AMCA's engine intakes are close to 90 degree,so not that stealthy

Maybe @Bleh could tell?

 

[Ar.gaurav28]

I've been hearing that the AMCA's engine intakes are close to 90 degree,so not that stealthy

Maybe @Bleh could tell?

Do they??

 

[Bleh]

I've been hearing that the AMCA's engine intakes are close to 90 degree,so not that stealthy

Maybe @Bleh could tell?

Ye knana se sun liye vai?
And what's "close to 90degree" mean?..Not familiar with the term.

 

[SARTHAK]

Ye knana se sun liye vai?
And what's "close to 90degree" mean?..Not familiar with the term.

some propoganda is being run regarding amca 's stealth ,he is just a victim of import lobby

 

[SARTHAK]

I've been hearing that the AMCA's engine intakes are close to 90 degree,so not that stealthy

Maybe @Bleh could tell?

no, amca is as stealthy as an ideal fifth gen aircraft should be

 

[Adrian Corvus]

I've been hearing that the AMCA's engine intakes are close to 90 degree,so not that stealthy

Maybe @Bleh could tell?

AMCA's air intakes are serpentine, which is successful at hiding the engine blades for achieving stealth
Other than that what do you mean by 90d air intake?

 

[SavageKing456]

Ye knana se sun liye vai?
And what's "close to 90degree" mean?..Not familiar with the term.

Lmao,i was puzzled WTF does it even means,so asked.
The comments are from millennium 7* History tech channel

 

[SavageKing456]

ADA waits for an Official nod for the indigenous stealth fighter and TEDBF – Indian Defence Research Wing

idrw.org

Approval shifted to by the end of Q3
First it was end of Q2.
if it goes like this then rip

 

[Bleh]

View attachment 91510View attachment 91511View attachment 91512
Lmao,i was puzzled WTF does it even means,so asked.
The comments are from millennium 7* History tech channel

No idea WTF that's supposed to mean! I think they mean the fuselage sides are not angled enough (ideally everything should be 45° angled with perpendicular)... And wings were true trapezoidal once as you know. But not anymore as that hurt aerodynamics too much.

I told you not to take YT comments too seriously. They've probably watched a video on basics of stealth.

 

[fire starter]

No idea WTF that's supposed to mean... I think they mean the fuselage sides are not angled enough (ideally everything should be 45° angled with perpendicular).

I told you not to take YT comments too seriously. They've probably watched a video on basics of stealth.

Why they are taking scale models too seriously lol.

 

[flanker99]

No idea WTF that's supposed to mean! I think they mean the fuselage sides are not angled enough (ideally everything should be 45° angled with perpendicular)... And wings were true trapezoidal once as you know. But not anymore as that hurt aerodynamics too much.

I told you not to take YT comments too seriously. They've probably watched a video on basics of stealth.

The angle of the pic these guys are commenting to made the intake side look straight ....so some started commenting nonsense

 

[Bleh]

Why they are taking scale models too seriously lol.

The angle of the pic these guys are commenting to made the intake side look straight ....so some started commenting nonsense

Let me clarify that for ideal stealthy performance the aircraft needs to be shaped like this, all at 45° (which I think is what these noobs are trying to say)...

...but such shaping is highly detrimental to aerodynamics & performance. So in case of a fighter jet tradeoffs have to be made, to be made up with material, coating etc. Only F-22 is sonewhat of an ecxception but as a result it needs much high T/W to function. AMCA, F-35, Su-57, J-20/31, KF-X all deviates from that.

 

[FalconSlayers]

@WahmanRespector Can you add sawtooth trailing edge designs on AMCA model? With cockpit shape corrections?

 

[Dark Sorrow]

can someone here explain the benefits of adaptive cycle engines(operational advntages)

Core principle of adaptive cycle engines is to manipulate the bypass ratio to achieve higher thrust using low by-pass mode (like F119) or achieve higher efficiency using high bypass.
The engine will be able to change its by-pass ratio mid-flight depending on flight requirement.

As per G.E. the engine offers bellow advantages

1. 25% reduction in fuel consumption
2. 35% increase in range
3. 50% improvement in loiter time
4. 60% heat absorption

• High-thrust mode
  Directs the majority of air through the engine's core and fan streams, delivering greater thrust during combat engagements and helping pilots execute their missions effectively.
• High-efficiency mode
  Directs air through the engine's third stream to dramatically reduce fuel consumption, provide greater range and allow pilots to persist longer in areas of interest with reduced risk.

 

[SARTHAK]

Core principle of adaptive cycle engines is to manipulate the bypass ratio to achieve higher thrust using low by-pass mode (like F119) or achieve higher efficiency using high bypass.
The engine will be able to change its by-pass ratio mid-flight depending on flight requirement.

As per G.E. the engine offers bellow advantages

1. 25% reduction in fuel consumption
2. 35% increase in range
3. 50% improvement in loiter time
4. 60% heat absorption

• High-thrust mode
  Directs the majority of air through the engine's core and fan streams, delivering greater thrust during combat engagements and helping pilots execute their missions effectively.
• High-efficiency mode
  Directs air through the engine's third stream to dramatically reduce fuel consumption, provide greater range and allow pilots to persist longer in areas of interest with reduced risk.

60% heat absorption is damn good
range improvement is also good
what is loiter time

thanks for info!

 

[Lonewolf]

60% heat absorption is damn good
range improvement is also good
what is loiter time

thanks for info!

60 % heat absorbtuon in low thrust mode .


Higher range in low thrust high efficiency mode not in high thrust

 

[SARTHAK]

60 % heat absorbtuon in low thrust mode .


Higher range in low thrust high efficiency mode not in high thrust

crux question - will in increase infrared stealth in supercruise mode?

 

[Lonewolf]

crux question - will in increase infrared stealth in supercruise mode?

Yeah as bypass ratio will be higher so exhaust air would be cooler

 

[Ar.gaurav28]

crux question - will in increase infrared stealth in supercruise mode?

Nope as the variation is in the ratio of bleed air going through the engine, that might help in keeping the engine cool thus reducing the infrared signature!
High efficiency mode:-

High thrust mode:-

 

[WahmanRespector]

@WahmanRespector Can you add sawtooth trailing edge designs on AMCA model? With cockpit shape corrections?
View attachment 91535

maybe this weekend I will try...but can't promise