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

[DrSomnath999]

Here are few technologies that are used over a stealth Aircrafts in layer conflagration
ELASTOMERS

Used for EMI and RCS reduction, elastomeric absorbers are available in a wide range of base materials for use in different environments. Products are based on magnetic or dielectric fillers and offer narrow, dual, triple or wide-band performance.

FOAMS

Rigid polyurethane or syntactic foams. foams are manufactured with graded loss for wide-band absorption or uniform loss for use in multi-layer absorbers

COATINGS

Microwave absorbent coating system for use on composite or metallic structures.

HONEYCOMB

A light weight, wide-band radar absorber which can be manufactured in a range of configurations.

STRUCTURAL RAM

Structural radar absorbing components can be produced using a wide range of manufacturing techniques including wet lay-up, vacuum bag, resin infusion and resin transfer moulding. A range of reinforcement fibres can be used, depending on the application.

Frequency selective materials

Design and manufacture of frequency selective materials (FSS) structures for radomes and adaptive stealth

 

[aimarraul]

exactly mate i support ur view
.fake photoshop pics

real pics

do you really hate T50 that much to denounce the official picture on Sukhoi's website ......

http://www.sukhoi.org/img/content/news/18_06_2010_04.jpg

 

[DrSomnath999]

do you really hate T50 that much to denounce the official picture on Sukhoi's website ......

http://www.sukhoi.org/img/content/news/18_06_2010_04.jpg

U REALLY DIDNT GET MY POINT OF FAKE P.S ? WELL MATE I DOUBT ABOUT CLARITY OF ENGINE BLADES THAT IS VISIBLE IN 1ST PICS ON ZOOMING WHICH IS NOT VISIBLE IN 2ND PICS
AND ALSO THIS ONE IS CLEARLY P.S

the darker, first picture; showing the intakes of the plane is fake. It's photoshop, Think about it, no camera in the worlds powerful enough to demonstrate the insides of an aircraft intake at that distant.

 

[kanpur]

Hmmm.....

Maybe renaming it would be a good start

such as

IND-FA
IND-RU
HIND-RU

Cheers

FRIEND STICK TO THE TOPIC

 

[DrSomnath999]

IRST probe is to be recessed

 

[aimarraul]

U REALLY DIDNT GET MY POINT OF FAKE P.S ? WELL MATE I DOUBT ABOUT CLARITY OF ENGINE BLADES THAT IS VISIBLE IN 1ST PICS ON ZOOMING WHICH IS NOT VISIBLE IN 2ND PICS
AND ALSO THIS ONE IS CLEARLY P.S

the darker, first picture; showing the intakes of the plane is fake. It's photoshop, Think about it, no camera in the worlds powerful enough to demonstrate the insides of an aircraft intake at that distant.

who told you that it's the engine blades?

 

[DrSomnath999]

who told you that it's the engine blades?

mate i am not saying this but ur great chinese friend Martian is saying this

The radar signature from the T-50's exposed fan blades alone is so enormous that it is questionable whether the T-50 can be classified as a stealth fighter at all.

Russian T-50 with exposed engine fan blades

Original Post By Martian

here is the link ,dont blame me man
PAK-FA inferior to J-20? Discuss!

 

[aimarraul]

mate i am not saying this but ur great chinese friend Martian is saying this




Original Post By Martian

here is the link ,dont blame me man
PAK-FA inferior to J-20? Discuss!

well,he could be right ,he could be wrong,we are not sure yet,at least he's right about T-50's straight air-inlets ,why can't you wait for russian revealing more informations ,besides,it's not your call for any kind of modification

 

[DrSomnath999]

well,he could be right ,he could be wrong,we are not sure yet,at least he's right about T-50's straight air-inlets ,why can't you wait for russian revealing more informations ,

cut the crap man ,leave that topic of photoshoping i dont wanna discuss it any more

besides,it's not your call for any kind of modification

i didnt get u what do u mean by that ?

 

[DrSomnath999]

TAIL BOOM OF PAK FA

DEMERITS

creates additional radar-reflective surfaces.

MERITS

but on another ground it has some use.The F-22's stealth is mainly optimised for X-band radars, the type commonly used in other fighters. To try and counter this, the PAK FA uses IRST and L-band radars in the wings. It also has an X-band radar in the tail boom in addition to the one in the nose to give it true 360 degree coverage.

 

[pari.mehta]

wow dr som, <hug>
love it, you are pretty much condensing the best of half the damn threads on pak fa lol. You have some of, if not the best damn threads recently
I think that with the VLO warfare the american doctrine of having better bvr missiles may have to change, with VLO vs VLO dogfights may happen more often and frankly, the russians are making the plane with the f22 in mind.

360 degree radar coverage may be a great idea especially as it can direct a short range missile at a plane on the six of the pak fa. But relax guys, the FGFA will get a larger order and frankly, itll prolly be better.

1) Hal will get all of their knowledge of composites and it was in a press release that the FGFA will have more composites.
2) The FGFA has a longer development and testing time, the Pak FA is aiming for 2015-2016 and FGFA is aiming for 2017-2018 around the time the chinese 5th Gens start becoming a threat. The FGFA has ALOT of our financial muscle and backing as it is prolly going to be our backbone for a while.
3) Know that we joined this project much much earlier than when we joined the su 30 program. The Pak Fa was in cold storage for a while and our money got it up and running. The work that was already done by the soviets was updated and completed to make the PAK FA but we came into the project at a point when we could customize it further to our needs.
4)Im not too worried about the Pak FAs radar signature as the radar signature of the YF-22 was prolly very high too. There are srill alot of prototypes to be made before the plane goes into production, and more still till we get FGFA.

 

[DrSomnath999]

wow dr som, <hug>
love it, you are pretty much condensing the best of half the damn threads on pak fa lol. You have some of, if not the best damn threads recently
I think that with the VLO warfare the american doctrine of having better bvr missiles may have to change, with VLO vs VLO dogfights may happen more often and frankly, the russians are making the plane with the f22 in mind.

360 degree radar coverage may be a great idea especially as it can direct a short range missile at a plane on the six of the pak fa. But relax guys, the FGFA will get a larger order and frankly, itll prolly be better.

1) Hal will get all of their knowledge of composites and it was in a press release that the FGFA will have more composites.
2) The FGFA has a longer development and testing time, the Pak FA is aiming for 2015-2016 and FGFA is aiming for 2017-2018 around the time the chinese 5th Gens start becoming a threat. The FGFA has ALOT of our financial muscle and backing as it is prolly going to be our backbone for a while.
3) Know that we joined this project much much earlier than when we joined the su 30 program. The Pak Fa was in cold storage for a while and our money got it up and running. The work that was already done by the soviets was updated and completed to make the PAK FA but we came into the project at a point when we could customize it further to our needs.
4)Im not too worried about the Pak FAs radar signature as the radar signature of the YF-22 was prolly very high too. There are srill alot of prototypes to be made before the plane goes into production, and more still till we get FGFA.

well mate i just wanna know do u want pak fa modifications or not? plz tell that only

 

[wind]

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!!!!!

We can make it out from your profile pick

 

[gambit]

Yes Well I want to say These LERX will have to be made up of material which is transparent to Radar frequency if L-Band and X-Band Radar would have to be fitted inside These LERX in Future just Like Radome.

For more Information ask gambit or ptldm3

Correct. Radome material is essentially absorber except that they 'absorb' to the extreme they pass through the freqs that they were designed to 'absorb'. I know it sounds strange but that is exactly what it is.

so why couldnt canards made of radio transparency material? how is it only available for lerx?

Because that is not how it works. INSIDE the radome, when the radar antenna is transmitting, there is a certain amount of surface behavior occurs as well as the 'pass through' behavior common to absorber. OUTSIDE the radome, there is a certain amount of surface behavior occur as well as the 'pass through' behavior common to the absorber. In other words, the radome is a two-way 'pass through' structure, from the signals inside leaving the interior and from the signals by other radars entering the interior. That is why the antenna itself is an RCS contributor.

If a flight control surface is made of absorber material, that does not guarantee any negation of its RCS contributorship. Try to imagine some surface wave behavior radiating off the canard and these reflected signals interacts with the fuselage and the wing. Then because the canard is made up of 'pass through' material, there are now some signals, albeit less intense, that will still interacts with the fuselage and the wing. Instead of just reflected signals with 'regular' the canard, there is now reflected and 'pass through' signals with the absorber canards. There would be more interference of both types: Destructive and Constructive. The destructive interference is good. The constructive interference is bad. But the major problem with RCS control is that it is currently too difficult to predict these behaviors, as in when they would occur and of their intensities. Plus the fact that a canard is usually an ACTIVE flight control element, meaning it is constantly under monitor and activation by the flight control system (FLCS), it is even greater difficulty to predict any wave behavior off the canard.

This is why canards are usually suspect when it comes to RCS control measures.

 

[DrSomnath999]

Correct. Radome material is essentially absorber except that they 'absorb' to the extreme they pass through the freqs that they were designed to 'absorb'. I know it sounds strange but that is exactly what it is.


Because that is not how it works. INSIDE the radome, when the radar antenna is transmitting, there is a certain amount of surface behavior occurs as well as the 'pass through' behavior common to absorber. OUTSIDE the radome, there is a certain amount of surface behavior occur as well as the 'pass through' behavior common to the absorber. In other words, the radome is a two-way 'pass through' structure, from the signals inside leaving the interior and from the signals by other radars entering the interior. That is why the antenna itself is an RCS contributor.

If a flight control surface is made of absorber material, that does not guarantee any negation of its RCS contributorship. Try to imagine some surface wave behavior radiating off the canard and these reflected signals interacts with the fuselage and the wing. Then because the canard is made up of 'pass through' material, there are now some signals, albeit less intense, that will still interacts with the fuselage and the wing. Instead of just reflected signals with 'regular' the canard, there is now reflected and 'pass through' signals with the absorber canards. There would be more interference of both types: Destructive and Constructive. The destructive interference is good. The constructive interference is bad. But the major problem with RCS control is that it is currently too difficult to predict these behaviors, as in when they would occur and of their intensities. Plus the fact that a canard is usually an ACTIVE flight control element, meaning it is constantly under monitor and activation by the flight control system (FLCS), it is even greater difficulty to predict any wave behavior off the canard.

This is why canards are usually suspect when it comes to RCS control measures.

gambit sir thanks a lot for posting ur views
But sir do u want any modification should be done in PAK FA 3rd prototype or not? plz comment
REGARDS