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But operational service will not start before 2015!Prime Minister Vladimir Putin told reporters "Deliveries of the first PAK FA fighters to train pilots scheduled for early 2013"
guys not p.s.....
picture was taken 13 feb
I wonder where all the experts are gone who used to judge this beast by looking at the pictures, Wait a minute .......may be the paint is in their way now...hahaha
It is very relevant, not just to Russian fighters but to anyone who rely on semi-active air-air missiles. A semi-active missile does not have a full radar system, only the receiver half. That is why the parent aircraft must maintain radar lock on the target to produce echoes for the missile to receive and process. Even when the missile has a full radar system, it still need initial guidance from the parent aircraft due to physical scan limitations.In any case I wanted to comment on the missile situation.
The fact that the F15 radar couldn't get a lock on a stealth plane within visual range is irrelevant to russian planes..
Flares. The way flares works is essentially the same as chaff, which is to present to the seeker a blanket of overwhelming noise.their IRST sensor would get a lock on within visual range even if the russian radar was off, similar I think PIRATE would on the EF2000.
Design limitation impose limitations on employment and doctrines.I don't subscribe to the AIM120 arguments.. I don't think multiple guidance versions are a limitation of design. I think its doctrine and modus opperandi..
With data links between multiple sources, odds are very good that the AIM-120 will get a terminal phase lock.Also I don't disagree that when a pair of F22 are pinging enemy aircraft and launch a volley of 120s the targeting data updates to the missiles will be more accurate and far more leathal, but still , the AIM needs to get terminal phase lock.. at least the revisions I worked with need to..
Now we are getting to the 'juicy' part...And still we don't know how stealthy the T50 is. In any case, in a proper long term engagement against a proper airforce fielding stealthy (if not stealth) aircraft I would be a bit uneasy simply using the AIM120 because the ideal environment cannot be taken for granted every time..
A visual representation is necessary...Bistatic radar is the name given to a radar system which comprises a transmitter and receiver which are separated by a distance that is comparable to the expected target distance. Conversely, a radar in which the transmitter and receiver are collocated is called a monostatic radar.
So if we go back to the bi-static illustration above, receivers A and B will process more of the body's echo power than the original location, if we have a mono-static setup on that original 'Transmitter' location.Histograms of the raw radar echoes imply a mirror-like specular reflection of the transmitted signal. Such an echo is possible only if the surface is extremely flat relative to our 2.2-cm wavelength.
The ideal situation, reference above illustration, is 'Transmitter' to 'Receiver B' to best exploit that 90deg deflective behavior. Anything less than 90deg and there will be inevitable echo power degradation, make worse if the body is deliberately radar elusive. So against the F-22, for example, IF we momentarily suspend the aircraft in flight for a moment, Receiver B will have even odds of detecting an anomaly and will trigger an investigation. Notice I say even, not good, odds. Have no doubt we have done extensive testing of our 'stealth' aircrafts against bi-static radars. Receiver A will detect the F-22 but will probably dismiss it as 'clutter'. And if the 'Transmitter' is a mono-static radar, it will definitely discard the F-22's feeble echo as 'clutter' because the F-22 and brothers are designed to target mono-static radars, which is the vast majority of the world's radar systems out there, civilian and military.The reason bistatic mode is so rare is that it makes things much more difficult. And that is one of the things that makes our radar special, we are going to be using that to our advantage. It makes the system more complex, but we are going to get something from the complexity.
In the case of bistatic radar, the transmitter and receiver are quite a distance apart,...
Note the highlighted -- solution of the bistatic triangle. The bi-static triangle is: transmitter+target+receiver. Reference the illustration above and it does not matter if it is Receiver A or B. Each receiver is part of its own bi-static triangle.Synchronization techniques used in the Bistatic Alerting and Cueing (BAC) program are examined. Particular attention is given to illuminator search, target search synchronization, RF synchronization, PRF (pulse repetition frequency) synchronization, range gate synchronization, and solution of the bistatic triangle. All of the synchronization techniques have been implemented and tested during the two and a half years of field-test demonstration of the BAC system. It is concluded that feasibility testing produced excellent results.
Possibly...But the F-22 and its brothers have an additional weapon that a PAK-FA must overcome if it wishes to call for assistance...Hey Gambit
It is a bit too late for me right now, but quickly I have only one question..
what makes you think that the T50 won't use data links to the extend NATO planes plan to. It has been stated that it will and USSR planes always had (some loose form of it anyway). The 2 F22 vs 1T50 could become 8 T50s vs 4 F22s easily ... I think you can't argue onesided there.. they did say the T50 will operate that way...
An antenna is not the array. The antenna holds the array. The software is called 'subarray partitioning'.A process and corresponding apparatus for partitioning an antenna or sensor array 100 having plural antenna elements 40 into sub-arrays,...
The U.S. Government operates seven distinct radar networks, providing weather and aircraft surveillance for public weather services, air traffic control, and homeland defense. Because each network is dedicated to a single mission, there is a significant amount of overlapping coverage between them. (See Figure 1 for the locations of the current radars.) By replacing all the networks with a single network of multimission phased-array radars (MPARs), it is possible to reduce the total number of radars required by approximately one-third. This streamlining of the nation’s ground-based weather and aircraft surveillance system could potentially save the Government billions of dollars over the lifetime of the radars.
We are testing very large AESA systems under this Multimission Phased-Array Radars (MPAR) program with AESA antennas as large as this one from an older generation...Current civilian radar systems for weather and aircraft use a rotating antenna with a reflective surface that shapes and directs the transmitted beam. The radar beam sweeps a volume of space around the radar as the antenna continuously rotates on a vertical axis. The reflector is tilted to change the angle of the beam from the horizontal. In a phased array radar, an array of radiators shapes and steers the transmitted beam electronically by controlling the phase and the off-on pulsing of the other radiators in the array. It is this ability to form and steer a radar beam that permits multiple functions to be performed with the same radar unit: hence, a multifunction phased array radar, or MPAR. The electronically scanning array panels respond more quickly, flexibly and at a higher resolution than the rotating antenna systems in use today.
MPAR would expand our current weather surveillance network, replace the Nation's aging air traffic surveillance radars, and meet homeland security and defense requirements for identifying and tracking non-cooperative aircraft over the U.S. A single network of MPAR units, each capable of performing multiple functions, could theoretically replace seven aging, single-function conventional radar networks. It is projected that one MPAR network meeting multiple national needs can be developed, implemented and maintained on a lower cost per life cycle than would be required to sustain the existing conventional radar networks through upgrades and required maintenance.
Despite my cheerleading for these 'stealth' aircrafts, I share the opinions of many pilots who have flown the F-16 and F-22 that in pure flying, as in aerodynamics exploitation, the F-16 is still supreme. There are two fighters that will catch the chicks' eyes: F-5 and F-16. I was fortunate enough to snag a backseat F-16D functional check flight (FCF) many years ago and it was orgasmic. Pulled continuous 9gs and I did not 'blow chunks'. We air refueled then got down to 100ft over the Gulf of Mexico. If there were any radar tracking us at that time, we went 'stealth' at that low altitude. Make working on these sexy aircrafts worthwhile.
Makes sense why PAF is in love with this aircraft, Thank You for your insight Sir.
r u sure paf really like it specially when this is intended to go to the rival hands