LCA Tejas Mk1 & Mk1A - News and discussions

In ninties, we use to have Mig-21s escorting Jags for strike. Yejas does the jb of one such combo. so It is surely much more than Mig-21Bison. Plus it was adjudged to be the best in air to ground targeting by IAF in recent wargames.

How does it compare with respect to reaction time. That is from alert to scramble to reaching target interception altitude wrt to the Bison and Mirage?
 
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How does it compare with respect to reaction time. That is from alert to scramble to reaching target interception altitude wrt to the Bison and Mirage?
both have same reaction time with Tejas having slightly longer legs than Bison. A two aircraft pair of bison and Jag had between them 2 x BVRAAMS + 4 x WVRAAMs + 10 x 1000lbs bombs or the Jag carrying 4 x D/Ts +1 x ASM. Now let us consider what 2x Tejas can carry. 4 x BVRAMs + 4 x WVRAMs + 8 x 1000lbs bombs or in anti ship strike role they can carry 2 x ASM on centerline with inner pylons having 2 x DTs each. Jag thrust is 75Kn and Bison is 69KN. its claimed 98KN is only for a very very short duration. each Tejas has 89 KN thrust.
You can see that 2 x Tejas have more fire power than the combination of a Bison and a Jag.
 
Mig 21 bison advantage s were cheap, Quick reaction time to get in air and supersonic dash.
Rest all points Tejas exceeds...

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Functionally, Tejas Mk 1 can replace how many Mig 21 bisons?

Functionally, 1 LCA is as good as 2 Bisons in terms of payload for A2A (4 BVR vs 2). But it's equal to 1 Bison in A2G, except LCA has much better and heavier weapons options, like Brahmos M.

It's slightly superior in endurance, gives 10-15 min of extra flying time.

While nothing can be done about the Bison's superiority in QRA, the LCA's avionics and long range BVR more than compensate for the supersonic dash disadvantage.
 
How does it compare with respect to reaction time. That is from alert to scramble to reaching target interception altitude wrt to the Bison and Mirage?

Much slower than Bison, pretty much M2000's equal, if pilots are not in the cockpit. If the pilots are in the cockpit already, then the same time for all three.

But twice the weapons range means the LCA can fire faster at an approaching enemy from a lower altitude and still have superior performance than what the R-77 provides. That buys enough time for bigger aircraft to take to the air and take position.
 
Functionally, 1 LCA is as good as 2 Bisons in terms of payload for A2A (4 BVR vs 2). But it's equal to 1 Bison in A2G, except LCA has much better and heavier weapons options, like Brahmos M.

It's slightly superior in endurance, gives 10-15 min of extra flying time.

While nothing can be done about the Bison's superiority in QRA, the LCA's avionics and long range BVR more than compensate for the supersonic dash disadvantage.
While against PLAAF I doubt the effectiveness of MK1A because of lack of kinematics, it should be a real handful against PAF. With AESA radar and BVRs like I-Derby ER and Astra(1/2/3) it will be a real killer against F-16s. Only J-10C may have better kinematics and equal sensors(though it has IRST advantage). What's your take on MK1A vs PAF, especially F-16s and J-10Cs?
 
While against PLAAF I doubt the effectiveness of MK1A because of lack of kinematics, it should be a real handful against PAF. With AESA radar and BVRs like I-Derby ER and Astra(1/2/3) it will be a real killer against F-16s. Only J-10C may have better kinematics and equal sensors(though it has IRST advantage). What's your take on MK1A vs PAF, especially F-16s and J-10Cs?

Without considering the effects of EW, if the J-10C has an RCS as small as LCA's, then it's gonna be on par. But if J-10C's RCS is similar to that of the F-16, then it's not gonna be very competitive. In terms of performance, both should be similar, both have similar payloads and endurance too.
 
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Without considering the effects of EW, if the J-10C has an RCS as small as LCA's, then it's gonna be on par. But if J-10C's RCS is similar to that of the F-16, then it's not gonna be very competitive. In terms of performance, both should be similar, both have similar payloads and endurance too.
Which means our 123(and 50 more if IAF places extra order) MK1As will keep PAF pinned freeing Flankers and Rafales to do the job against PLA-AF. Nice:)
 
That's a given. Same base technologies after all, the bigger sensor wins. Like comparing the APG-77 and 81.
We should look for a podded IRST like Legion pod too. Without it MK1A may remain in a disadvantageous environment where all radio waves are jammed. J-10C will have a upper hand in that scenario.
 
Without considering the effects of EW, if the J-10C has an RCS as small as LCA's, then it's gonna be on par. But if J-10C's RCS is similar to that of the F-16, then it's not gonna be very competitive. In terms of performance, both should be similar, both have similar payloads and endurance too.
Where did you come to the conclusion that the RCS value of Tejas would be smaller than that of F16, just the amount of composite material used to reduce weight?
 
While against PLAAF I doubt the effectiveness of MK1A because of lack of kinematics, it should be a real handful against PAF. With AESA radar and BVRs like I-Derby ER and Astra(1/2/3) it will be a real killer against F-16s. Only J-10C may have better kinematics and equal sensors(though it has IRST advantage). What's your take on MK1A vs PAF, especially F-16s and J-10Cs?
The Astra missile has a range of 44KM at an altitude of 8KM, making it difficult to say that it has a significant advantage over the R77-1
 
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Where did you come to the conclusion that the RCS value of Tejas would be smaller than that of F16, just the amount of composite material used to reduce weight?
'Have Glass' program reduced F-16s RCS from ~5m^2 to 1.2m^2 clean frontal. Tejas from all known sources is 0.5m^2 clean frontal owing to its small size and extensive use of CFC.

Having said that like our HVT sir said, once you put 6 missiles and 2 drop tanks, all of them will have RCS around or above 2m^2(my guess). So they would be picked up at long distances by modern AESA radars in a BVR fight.
The Astra missile has a range of 44KM at an altitude of 8KM, making it difficult to say that it has a significant advantage over the R77-1
You're quoting old figures. Astra 1 and R-77-1 have similar range like AIM-120C5. It's Astra 2 and 3 that will have real long ranges.
 
Have Glass' program reduced F-16s RCS from ~5m^2 to 1.2m^2 clean frontal. Tejas from all known source is 0.5m^2 clean frontal owing to its small size and extensive use of CFC.
I think it's better to use a microwave anechoic chamber to measure more accurate RCS values. The plan for F16 includes changing the intake duct and engine nozzle, using absorbing coating, which Tejas does not have. Moreover, there are a lot of protrusions and angular reflective surfaces on the surface, making it difficult to say how good its stealth performance is
 
You're quoting old figures. Astra 1 and R-77-1 have similar range like AIM-120C5. It's Astra 2 and 3 that will have real long ranges.
The range of R77-1 at an altitude of 10KM is approximately 70KM, while the range of AIM120C5 is around 105KM,As for the Astra 1, I think its range may not be as good as the R77-1
 
I think it's better to use a microwave anechoic chamber to measure more accurate RCS values. The plan for F16 includes changing the intake duct and engine nozzle, using absorbing coating, which Tejas does not have. Moreover, there are a lot of protrusions and angular reflective surfaces on the surface, making it difficult to say how good its stealth performance is
You're either stealth or not. All so called "Reduced Observable(RO)" planes are only so without weapons and EFTs. So little bit of RCS reduction hardly matters, IMO. Tejas is not stealth, neither F-16 or J-10C are.
The range of R77-1 at an altitude of 10KM is approximately 70KM, while the range of AIM120C5 is around 105KM,As for the Astra 1, I think its range may not be as good as the R77-1
As per IAF, Astra 1's performamce matches that of AIM-120C5. 'Nuff said.
 
Where did you come to the conclusion that the RCS value of Tejas would be smaller than that of F16, just the amount of composite material used to reduce weight?

As per ADA, the LCA Mk1's RCS is 3 times smaller than the Mirage 2000's.

Now it's even more less with Mk1A. It's in the Rafale/Typhoon/Gripen E category. So the F-16's RCS, depending on the version, is 12 to 50 times smaller.

The engine blades are hidden using Y-duct and the cockpit is smaller than the F-16's. There are no canards or tailplanes, just wings and one fin. It has RAM treatment as well. One may assume some new parts may even contain RAS materials. So it already has reduced observable features already. Missiles are all new designs with extremely low RCS.

The Astra missile has a range of 44KM at an altitude of 8KM, making it difficult to say that it has a significant advantage over the R77-1

Astra Mk1 is in the same class as the R-77-1 and AIM-120C5/7. Plus it's faster and has better G performance than C5/C7.
 
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