Not really an update. The calculator is still on development :3 mainly i am adding more comprehensive Multipath modeling that also take account of radar antenna polarization and existence of vegetations. There is also new tool to predict your TRM’s maximum emitted power based on the cooling capacity of your platform. Given the advances of technology it could be said that now only thermal barrier and thus cooling capacity of the AESA radar platform that become the main design constraint.
At the moment. i am in process of writing sort of “user’s readings” Not really a manual but it contains the spreadsheet’s descriptions, equations used and why. At the moment here is 2 pages i done mainly deals with where the N^3 factor comes from. Unlike other radar equations. The one i used is a modification of active array equation found in chapter 4 or “Radar techniques using Array Antennas” Instead of usual Power and gain notation. The book use number of modules.
Hopefully this make bit of sense :
https://www.scribd.com/document/394246244/AESA-Radar-Calculator-The-User-s-Read-Preliminary-version
[USER=”77292″]LMFS[/USER]
As useful as it is, they can. maybe refine their existing computer model as they now have a “point” of data taken from real life. Same game can happen to F-22 signature. But without data from other frequencies and target that behave as they want (say in a manner of B-2 followed by special signature measuring B-737’s) It would be hard to make correlation to other frequencies or other aspect (your measurement might only be correct for a very narrow or special occurrence or aspect) and we know Su-57 is only being there for like days, don’t think it is enough to set any comprehensive instrumentation radars at that time. So it is not the end of the world. The Su-57 can be improved and so is Raptor. With only differences being, one is about to enter production while the other already ceased.
Whatever the purpose might be. They seems to have their intended result. Plus cool image+proof that Kh-59MK is indeed not a vaporware and seem to work as it intended + Su-57 will definitely carry it.
I wonder why we need to waste our breath on rather irrelevant signature secrecy. Why nobody ever point out US have same vulnerability by flying Raptor in Syria without luneburg lenses. and if Su-57 flying there untreated as it looks like then any attempt on radar signature measurement would be rather futile and at best giving untreated signature of Su-57.
They test weapons. Does that need RAM coatings ?
Then you have your answer. The raptor itself did not use Luneburg lens during deployment to Syria.
https://twitter.com/m3t4_tr0n/status/841384541658980352
and this
https://theaviationist.com/2014/09/25/f-22-at-night-formation-lights/
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What it means for Su-57 ? It means that it does going on a full combat mission. It is a test but it’s real.
Any discontent regarding why Russian should keep signature etc is irrelevant, as you see US doesn’t give a shit either and go with “full stealth” for their raptors.
Did Raptor use Luneburg lens during its combat deployment to Syria ?
Unfortunately the show didn’t really delve further into avionics suites like radars. I just noticed that the cheek array and main array have different polarization. The main array is horizontal while cheek array is vertical. Seems the cheek array is more optimized for strike/reconnaissance role and situational awareness as typical missile may have higher RCS in vertical polarization, and strike as vertical polarization is less affected by vegetation AFAIK. The module style is yes, like APG-77 “stick” array where the module “bricks” are arranged linearly then stacked to form the full array.
Another thing is of course the stealth treatment, the show seems to concentrate more on canopy treatment and generic shaping. But none on RAM or RAS. But i guess not much can be revealed in public for that respect.
Another interesting footage is the Su-57 internal fuel tank arrangement, but hard to make anything out of it yet as estimating the tank volume would be difficult.
The engine footage is great except they didn’t really fire that Izd-30 on test bench, and use 117 footage instead X3.
7.23 has interesting sight of 3D TVC nozzle.
That is the diameter right?
The diameter was 20 cm. What am i saying there is a what if scenario when we enlarge that 20 cm to 40 cm.
Isn’t the detection range of OLS-35 supposed to be 35km against head on Su-30?
We also have this :
http://www.knaapo.ru/media/eng/about/production/military/su-35/su-35_buklet_eng.pdf
Which im going for.
You can of course easily, re-adjust the value as you wish in the spreadsheet as it meant for use.
Klimov never make TVC for Flankers. The Su-37 Bort 711 and 712 were supposed to have AL-31FM-1 with TVC. BUT since that engine was not available at that time. There comes AL-31FP. With 2D TVC and as we see today in Su-30MKI families.
The Su-35S and Su-57 however are bit different. Same method as FP BUT it’s 3D instead.
https://www.youtube.com/watch?v=6zF5PGytV3E
So we could expect TVC in J-11 variants too i guess. Like this Russian prototype.
I have heard that using 1-18ghz for AESA T/R modules compared to 8-12ghz you get less noise return in detection. So the question I am aiming for is with a 1-18ghz range can a computer for an aircraft tell the pilot which frequency gave those receivers the highest return? I am very sure you can narrow down your transmitters to a better specific frequency range on where you received the highest noise.
Unfortunately it’s kinda not possible unless you are using separate radar like L-band in wing leading edge while X-band in nose. Remember that module for AESA is limited by its width. which should be about half wavelength. Therefore you cannot make single module emit in several band.
That kind of job better be done by instrumentation radar.
What is the maximum width of the frequency band for a radar in a fighter? it is some phisical
Space available dictates the frequency. another consideration is multifunctionality which is why all fighter radars are in X-band. Can put L-band like Su-57 or Su-35 but this is of limited resolution.
Well, not a good news 😡
https://ria.ru/defense_safety/20181005/1530022992.html
I suggest using Google Translate or our Russian natives can kindly provide better interpretation. The news related to that Indonesian Su-35 deal which threaten by delay due to fact that having business with Russia will subject us to CAATSA. This would means US companies might stop doing business with ours which basically a pain given no real substitute for something like google and yahoo. Despite Gen Matthis’s insistence that we be exempt from it. My take however is perhaps lost in information where the reporter interview source which having outdated information.
Should that proven to be true it would be a world of hurt as we doesn’t really have exit plan and whatever Western offers seems to not taking account that we might face Chinese AEW, stealth fighters and hordes of cruise missiles.
and i dont think there would be much of difference in shape between 40N6 and 48N6 given the 1985 R&D shows that 48N6 can also reach 400 Km.
At least no shooting game.
and no..the weaknesses of IRST is that it is not able to measure range directly and not really “all weather” sensor solution.