What a loss, radome is bigger, but because of power & cooling requirements, TRMs have been reduced.
Main advantage of bigger radome is gone.
Tejas Mk2 (Medium Weight Fighter) - News and discussions
- Thread starter Schwifty
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Main advantage of bigger radome is gone.
I think its because of Tejas's initial design time frame. No AESA was available to military at that time and normal Doppler radar was intended to use in LCA.
776 TRMs means almost 80 percent of Rafales 1000 TRMs which has 200kms tracking range for fighter size aircraft. So Practically it should have around 150kms tracking range for fighter size aircraft. Not bad at all. I would say rather very good for a light combat fighter...
Not sure if a linear scale can be used for power vs range. In most simple form, power is proportional to square of range.
I think the actual message was lost. I believe he was talking about the Uttam radar being tested on the Mk1 with 780 TRMs, and he says the Uttam on Mk2 will have 1000. So he's basically referring to the development prototype of Uttam.
I don't believe he was referring to the Israeli radar at all. The Israeli radar will have far more TRMs than that. I believe it's 1100+. And he says the diameter of the Mk2's radar will be smaller due to the integration of the IRST and possibly the IFF as well, so 1000 on Mk2 and 1100 on Mk1A makes sense.
All of this is subject to change on Mk2 as new radar advances are made. So I wouldn't be too hung up on TRM count when it comes to prototypes.
That got me confused too. But since the jaguar has 328 trms I think 780 trm number to be true. But it's for mk1 so likely mk1a might have the 1100 number. Sorry for misinformation guys the 780 trm number is for the mk1.
The Jaguar's radar is very small. There are 300+ TRMs on it. During the time the Jag's radar was designed so was the Kfir's radar, which is much bigger and has 500+ TRMs. Kfir is a derivative of the Mirage V which has a radar with a diameter of 47cm, which means Jaguar's radar is likely 30-35cm. Otoh, LCA's AESA radar is anywhere between 60 and 65cm, at least 60cm. If you scale up from 30-35cm to 60-65cm, the surface area increases by 3 to 4.5 times. So the number of TRMs would be 320x3 - 320x4.5 = 960-1440. The average of that is 1200. So it's easy to assume the number of TRMs is ~1100.
Mk1 doesn't have an AESA radar.
With this method..
Surface Area for 35 cm radar= 962 sqcm
Surface Area for 65 cm radar=3320 sqcm
Surface Area for 96 cm radar=7241 sqcm
So
7241/3320*1100=2399 (upscaled uttam for su 30 mki)
Pretty much. But I think the MKI's radar would be much below 95cm instead since AESAs tend to need more leg room. The MKI also has a repositioner.
The F-22's radar is expected to be 1800-2200. J-20's is speculated to be 2000-2200.
One limit for the very big antenna is the available electrical power.
AESA requires less input power though to generate the same output power as PESA or MS. It's far more efficient.
I'm hoping there's an engine upgrade. But MRFA can easily spoil that option for this decade.
Around 375kms for latest ones with 200kms tracking range for 3m² RCS fighters.
Around 50kms for tanks.
Around 100kms for destroyers/ships..
Its shouldn't be an either/or situation, even if it is, then upgrading sukhois should be obvious choice. But, our bureaucracy isn't known for making pragmatic decisions. Also, many here are naively hoping for an idealistic solution where we get an uprated engine from russia and the entire avionics system to be from indian companies. As it happens, we don't live in an ideal world. Tell me, why would russia part with its crown jewel (engines)? Will they do that some paltry amount of money? Engine tech is worth in gold and we are locked in their ecosystem. We can't put an american engine in the sukhois, can we? They have us by our balls and they know that.
Its pretty obvious that they would want their pound of flesh. Maybe they won't agree with an indian radar. Thats the pitfall of buying a foreign fighter aircraft. If we buy 114 MRFAs, we will again face this very same problem 15 years down the line. Its the indian side which is desperate for upgrades, so the russians have an upper hand in negotiations.
If we avoid buying more MRFAs now, we will obviously have to buy more MWFs. Win-win situation. This would also incentivise the indian govt. to fast track the development and purchase of MWF. The more money we throw at MWF, the better it is. And 15 years down the line we won't be running like headless chickens for fleet upgradations for these MRFAs either. Just buy 2 more rafale squadrons off the shelf and be done with this nonsense.
MWF instead of mmrca2? Common, you want IAF to be destroyed or what? MWF isnt ready as on today, it will not be in near future too. And our enemy is waiting near our border and we dont have time for another gamble on MWF at the cost of MMRCA2.