What modification should be done to 3rd prototype of PAK-FA?

[DrSomnath999]

i think that new stealthier engines should be put on with some kind of stealth intake and sawtooth design combination

the Russians have said it themselves the PAKFA is more maneuverable and agile compared to the F-22 but less stealthier

exactly mate russians wont compromise on supermanuverabilty let it be at expense of stealth
They have LERX & 3 axis tvc nozzle supercruise engine which would give them unrivalled super manuverabilty

 

[DrSomnath999]

As u all most be knowing india had order a study on J20 & perhaps indian airforce had almost got that report (no links for that as it is a classified) .But I personally assume IAF would press for modifications in PAK FA in it's 3rd prototype seeing J-20 .

 

[kaykay]

^ hope so...wish if russians can make it more stealth...but definately not at the cost of engine.

 

[DrSomnath999]

^ hope so...wish if russians can make it more stealth...but definately not at the cost of engine.

exactly they wont compromise on engine as it is guranteed it would have 3 axis tvc nozzles & supercruise engines

 

[DrSomnath999]

russia had tested plasma stealth & india should opt for it

NOTE: THANK U SPARK FOR THE PICS

 

[kaykay]

now the real question is if the new generation engines would be available to India....there is a rumer that that would not be available to any one except russia.....though we enjoy a special relationship with russia still....

 

[Firemaster]

then declare indian air space no smoking zone it would automatically fix the problem

Actually He was talking about the smoke that leaves from Engines of PAK FA.
And after a History of Successful engine development Russians are still not able to Fix this problem.
This should be fix as much early as possible to make its aft heat signature below a certain level.

 

[DrSomnath999]

Actually He was talking about the smoke that leaves from Engines of PAK FA.
And after a History of Successful engine development Russians are still not able to Fix this problem.
This should be fix as much early as possible to make its aft heat signature below a certain level.

OOPS I THOUGHT HE WAS TROLLING :LOL:

 

[Firemaster]

now the real question is if the new generation engines would be available to India....there is a rumer that that would not be available to any one except russia.....though we enjoy a special relationship with russia still....

We are providing about 6 Billion USD to its development then why not???

 

[DrSomnath999]

now the real question is if the new generation engines would be available to India....there is a rumer that that would not be available to any one except russia.....though we enjoy a special relationship with russia still....

Who said that!! absolute B.S.can u give any link for that ?kindly

 

[Firemaster]

OOPS I THOUGHT HE WAS TROLLING :LOL:

Apart from this RAM Treatment is also required for LERX to Reduce its RADAR Signature. Afterall after Canard its signature is also contributes to Some RCS( much less than canard).

 

[Varunastra]

then declare indian air space no smoking zone it would automatically fix the problem

how according to ur psycology would that improve pakfa???.....i was talking bout the fact that heat given off can be easily detected and reduce it's stealth.....i am no nature lover dude!!!!!

 

[DrSomnath999]

Apart from this RAM Treatment is also required for LERX to Reduce its RADAR Signature. Afterall after Canard its signature is also contributes to Some RCS( much less than canard).

yes overall increase in RAM paint & composites should be given including in LERX

---------- Post added at 09:56 PM ---------- Previous post was at 09:55 PM ----------

how according to ur psycology would that improve pakfa???.....i was talking bout the fact that heat given off can be easily detected and reduce it's stealth.....i am no nature lover dude!!!!!

sorry mate i thought u were trolling as a duplicate indian flag hoister ,i apologise for that

 

[hembo]

1.FRAMELESS COCKPIT CANOPY:
Traditional cockpits have metal supports that could be a strong reflector of radar energy. Frameless canopies are very difficult to make as they involve advanced materials science. The Russian T-50 lacks this feature. RUSSIA should built
frameless canopy.

Don't think Russians have the technology for frameless canopy. If they had, they would have revealed it in the first two PTs. If they can sneak/ steal the same like some others by the time the third/ fourth PT, it would definitely be great addition to the great machine.

2.SERRATIONS ON WEAPONS BAY/LANDING GEAR DOORS:
Serrations, or saw-tooth edges, are needed to hide seams that would otherwise appear on radar.

Should be done definitely. I don't understand why this wasn't done on the first place.

3.INCREASE IN RAM & PLASMA STEALTH COATING & INCREASE IN COMPOSITES INTAKE :

Can not see any evidence of coating material or ink to absorb radar waves, RAM and RAP, respectively, which must be present in the operating aircraft. It will be used in places where the techniques that can not be used or are ineffective
From the front you can see that a large investment in the control of RCS. From the side you can see how serious shortcomings in the side of the engines. Seen behind the setup is fairly conventional. Well Russia needs to increase it’s RAM & composites concentration to reduce
RCS of plane atleast in rear & middle fuselarge

This is definitely coming along with smoother rivets in the finished product. Also the rough exterior is seen in the prototypes so far to have the sensors to collect data from the ground/ flight testing. But as it progresses, the coating & smoother surfaces will be seen in the near future.

4.ENGINE INLET MODIFICATION:

The pak fa engine air intake and pod does not seem to form an "S" is recommended for stealth aircraft. The front of the engine is one of the main reflectors in the front and the Russians should use other means to block air intakes.
They should use radar blockers or modify the engine inlet by adding a coat in the inlet duct with radar absorbent material, because a lot of radar energy bounces off the duct wall several times on the way in and out again. High-level stealth, though, means physically blocking the line of sight with a "serpentine" duct (which is done on the F-22, JSF and Typhoon). But that can take up a lot of space, particularly with big engines, and isn't practical for a stealth retrofit or on some new designs.

The Super Hornet, for example, has short inlet ducts so line-of-sight blockage by curvature isn't practical. The solution was to install a blocker in the inlet duct - looking down the duct, you see what looks like a compressor face, but isn't. It's a fixed composite structure, RAM-coated.

ANOTHER INTERESTING CONCEPT OF ENGINE INLET MODIFICATION

It uses flexible vanes with a rotating ring at the rear end: in the "stealth regime" it provides extensive blockage, but it clears the airflow when it doesn't matter or you need full speed or power. One challenge would be the structural design, because the last thing you want is a piece of RAM flaking off the moving surface and FODing out your motor.

We don't know clearly yet the actual inlet design. It could be serpentine or DSI for all we know. They will at least install radar blocker soon..

5.ENGINE NOZZLE MODIFICATION:

The engine used in the prototype is not definitive and may be one reason for the lack of attention in this area. In any case, the aircraft may be inclined to hide these areas with the wings of a known radar. The back is clearly due mainly to the conventional engine cover. Again, it is necessary to wait for the final configuration of the final aircraft engines. Technology "plasma shield" may be an option to reduce the RCS of the back section.

The engine exhaust seems not to have treatment to reduce the thermal signature. The minimum would be about a block structure of the hot parts and reduce the thermal signature of the main heat source of the aircraft. A rectangular exhaust would be ideal to facilitate mixing of heat from the turbine with the air around. You should keep an escape from conventional to use vectors of orientation in three dimensions.

but the problem Russian pak fa wont comprise manuverabilty to stealth so if we have rectangular nozzles then it would have 2 axis movement but russia would probably stick to 3 axis nozzles .Instead they may concentrate on supercruise engine rather than nozzle modifiction
instead Sawtooth edges on the engine nozzle should be done to scatter radar waves from behind like F35

The TVC won't be compromised by the Russians. period. However, this could be and hope fully will be done in the next prototypes:

6.SMOOTH SKIN LACKING SIGNIFICANT PROTRUSIONS-
PAK FA aircraft have many vents, exposed rivets, and antennas. Stealth aircraft must have smooth and flush surfaces. So Russia should take notice of this thing & should do something
about it.

See my response to point no. 3.

Just my few cents..

 

[Firemaster]

yes overall increase in RAM paint & composites should be given including in LERX

But Remember LERX of PAK FA are supposed to host L-Band AESA, It would most likely to be use material same as used in Radome of PAK FA.