PAK FA, T-50: News #1

I've just seen only few of this sites about T-50 and that it would took to many time to may find what i am looking for or maybe it isn't there, i will just ask.

Are any official parameters given to the AESA L/X band radars it has and is this design completley new to fit more than one radar on an aircraft especially into the wings airframe?

And what is the doctrine or idea behind this wing radars?

I've my guesses but could be much simpler than i may think.

Different wavelengths react in different ways to different materials and surfaces... for instance with light waves, if you shine a white light on a white object the white object will reflect a large proportion of the light that hits it and it will reflect that light in all directions so it will be easy to see from most angles.

Paint the same object black however and it will absorb most of the light that hits it and it will be difficult to see clearly.

Modern stealth... as used on the B-2 and F-35 and F-22 is optimised for high frequency radio waves in the X band and higher. Using wing mounted L band radar is an attempt to bypass the stealths effective range. For instance with light it is the colour of the object that matters, but with sound then the hardness and shape that becomes more important... The echo doesn't change if a surface changes colour, but if you put a surface of rubber then the sound reflected might change.

Another factor is that the NATO datalink system called link 16 uses L band communications which might allow an L band radar antenna to detect the presence of aircraft that are otherwise silent with their radars off.

The Americans found a few new applications for AESA radars after they developed them... I rather suspect that new L band wing antennas might be the same.

Thanks.


The current radars operate often in diffrent wavelentghs to avoid interception, so could they use even VHF wavelentgh for even better detection of VLO targets?

Different wavelengths require different sized transmitters and receivers... VHF band equipment has very specific requirements in terms of transmitter size.

Just look at the size of the Russian VHF band radars and you will see the problem of fitting those inside a fighter aircraft...

i have seen a pic of internal bays of pakfa .it shows only 6 missiles .. i was hoping it could carry 8-10 missiles atleast

ricky123 wrote:i have seen a pic of internal bays of pakfa .it shows only 6 missiles .. i was hoping it could carry 8-10 missiles atleast

6 is a fine number if we are talking 4 R-37 sized missiles inside the main bays.
It would be quite impossible to fit anymore of those bad boys.
No 5th gen fighter has space for 8-10 modern long range missiles internally.
Can the main bay hold 6 R-77 sized rounds? We will see.
However it is tailored specificlly for Kh-58 internal carriage, which is a rather impressive internal load this early in the program.

No matter speculations up to this point I think we will see no less than 6 R-77 successor missiles in internal PAK-FA main bays.

New missile is still being designed and was not revealed.

these i got from another forum ..how come u can see the engine .i though it would be in S shape ....

Ricky, just check out earlier parts of the thread, the whole engine thing has been beaten back and forth.

S-duct is nothing new, and it seems Sukhoi rejected it for aerodynamically superior blocker solution. The blocker is not yet fitted.

Plus that photo of the weapons bays is fake... they have not released any photos of any PAK FA prototypes carrying any weapons at all let alone a full weapons bay.

The fact that they were talking about changing to small triangular fins for the R-77 suggests they have not fully decided on the weapon options.

The rear grid fins of the R-77 fold forward and take up very little space but their must be a reason for them to consider changing to triangular fins.

With later models using full thrust vector motors fins and strakes becomes even less necessary.

Jo Askura discovered some interesting things about the intakes @ tail bases:

http://forum.keypublishing.com/showthread.php?p=1970740#post1970740

On the Paralay forum they're saying the T-50-4 is in the air. This should be the first non factory test flight

The fourth T 50 made its first flight on December 12th , 2012.

Russian Air Force Commander Viktor Bondarev had said to RT last month that 8 T 50s will take part in the flight tests in March 2013.

Yeah I know.

Apparently it's flying from Siberia (Komsomolsk on Amur) to Zhukovski

T-50-4 - painted

Weren't they talking about 10 prototypes to allow them to get through the flight testing faster... something like 2,000 hours of flight testing?

Nice pics BTW.

GarryB wrote:Weren't they talking about 10 prototypes to allow them to get through the flight testing faster...

10 by the end of 2014 seems viable barring any major delays. I would guess 2 more this year (05 + 06) which should be the last of the prototypes.

Cyberspec wrote:

GarryB wrote:Weren't they talking about 10 prototypes to allow them to get through the flight testing faster...

10 by the end of 2014 seems viable barring any major delays. I would guess 2 more this year (05 + 06) which should be the last of the prototypes.

Well, no one believed T-50-04 will fly by the end of this year but it did. I have no doubts in Pogosyan words when he said PAK-FA is going

according to schedule. So when he says 4 more will fly this year I believe him.

Russian T-50 made its first long flight - Rogozin

"Promising aviation complex tactical aircraft (PAK FA) T-50 after the first solo flight from the Far East landed in Zhukovsky," - he wrote in his microblog on twitter.

Deputy Prime Minister noted that the aircraft is equipped with almost the full avionics and surveillance and attack systems.

"This is a major breakthrough! Machine broke 7000 km, making the road to the capital of two landing in Abakan and Chelyabinsk. Congratulations team of developers and testers" - said Rogozin.

There are claims that by the time the Su-50 is in service USA will already be testing 6gen fighters. Is this true?

KomissarBojanchev wrote:There are claims that by the time the Su-50 is in service USA will already be testing 6gen fighters. Is this true?

Think about it.

Is the F-35 in service yet?

http://s017.radikal.ru/i401/1301/cc/b0bfb3184361.jpg

So sexy.

TR1 any idea which route did T-50-4 flew to compelete its long journey ?

Where did it land to refuel ?

Thanks

TR1 wrote:

KomissarBojanchev wrote:There are claims that by the time the Su-50 is in service USA will already be testing 6gen fighters. Is this true?

Think about it.

Is the F-35 in service yet?

The F-35 is only loosely defined as a "fighter" anyway. That being said, seeing a demonstrator for "6th generation" technology in the near future wouldn't surprise me. A lot of relevant concepts have in fact already been evaluated on other platforms.

"This is a major breakthrough! Machine broke 7000 km

Rhetoric fail. 7,000 km would be relying on IFR rather than landing twice. They'll get around to making long-endurance test flights eventually I'm sure, but this doesn't count.

^^^ Little offtopic
We can say that Stealth, Aesa, Supercruise, Internal weapon bays, electronics etc. define 5th gen. What you do think is 6th gen? What particular characteristics there are that will make a 6th gen fighter? Are there any such technologies??