LCA TEJAS MK1 & MK1A: News and Discussion

[HariPrasad-1]

Tejas doesn't have very low RCS, stop repeating the same thing again and again guys, Even HVT has confirmed this indirectly in one his tweets, if someone has patience, you can try to find it.

As a matter of fact, one of the very old and knowldegable member Twinblade(PHD holder) said that Composite increases the RCS since they are transparent to the radar waves, that means the waves will invariable hit the engine or pilot which actually increases the RCS.

Tejas Mk1 has 0.5 Sq mtr of RCS while MK1 A will have between 0.1 Sq Mtr to 0.2 Sq Mtr of RCS.

 

[patriots]

Tejas vs J-20: How Chinese J-20 Jets Have Overpowered Indian LCA Tejas With Indigenous Technology?

As per latest reports, China could be close to developing indigenous engines for its J-20B fighter jets. If Beijing succeeds in achieving this milestone, it will join the likes of the US, Russia and France and EU which have mastered this technology.

eurasiantimes.com

It's just like comparing your child with ..... neighbour's child. ........

 

[Bleh]

what you are talking about as good as upgraded mirage 2000. I repeat Tejas is nowhere as mirage 2000. Tejas mk1a will outmatch mirage 2000 in all areas except payload. Astra on Tejas might give it bvr advantage but BVR battle is tricky . And at best Tejas can only carry 2 astra to mirage 6 mica + 2 drop tanks. In 1vs 1 mirage 2000 will always have upper hand even against Tejas armed with astra missile, simply because mirage can dodge 2 astra missile fired from 50+km distance and turn cold . After 2 missile gone, it would be dogfight in which m2k will beat Tejas quite easily. Don't underestimate mica missile it was primary weapon of rafale until meteor was operational means (2018).

Some miscalculations here.

With 3 times the RCS & comparable radars in both, I strongly doubt Mirage-2000 will get to launch as I of those BVRs.
And both are known to have similar ITR of 30°/sec but Tejas has better STR of 17-18°/sec against 16°/sec of Mirage-2000... Similar quality Helmet Mounted Display in both with peg WVR kill probability at 50:50.

Tejas Mk1 has 0.5 Sq mtr of RCS while MK1 A will have between 0.1 Sq Mtr to 0.2 Sq Mtr of RCS.

Oi. Don't make such outlandish claims! Nobody knows neither what the existing RCS is nor how much it will reduce in Mark 1A.

 

[Tumba]

You are talking about Mission Computers. Jets don't have a central unit, but it does have a distributed architecture with different mission computers. Now a RADAR in itself would have multiple mission computers based on its function. Interestingly, since we are using ELBIT RADAR, the FCS is Israeli. So to integrate any weapon with that FCS, the source code for the same would have to be entered in FCS or should we say have to be provided to Israeli technician.

Distributed architect does not mean central unit is missing but central unit becomes more necessary in a distributed architecture,a master/central unit is the one who commands the modules in automatic fashion or given by pilot,
and again source code requirement only comes in case one wants change the parameters of said weapon, otherwise everything necessary is already provided with the system to interface with master unit or any other necessary functions required by sides.

 

[Chandragupt Maurya]

No. Gripen was cheaper than Rafale which we purchased for 91 million USD.

That was gripen C/D, Griepen E is upgraded and costs 130 million dollars each

 

[patriots]

@Bleh can you compare Tejas vs mirage 2000 performance wise....for the sake of reader s here.....
Please compare mirage 2000 upgraded with Tejas mk1a

As mirage 2000 upgraded is the latest variant....and mk1a will be the latest one...

“A cursory glance of capabilities shows that Tejas is extremely handicapped when it comes to the crucial criterion of the ‘ability to turn’, or change direction rapidly so as to throw off an attacker or turn to face him. On this feature, Tejas is only as capable as a MiG 21 of 1957 vintage. Even the IAF’s Mirage 2000 is better than this,” the official said."

“Further, the agility of Tejas, i.e. the time taken to achieve a given rate of turn or pitch, is also limited by its ‘fly by wire’ control laws which are yet to prove departure protection. No amount of pilot skills will be able to overcome the LCA’s limitations including those on spin tests,” said the official, adding that Tejas might have to run for its own survival when engaged in a combat with PAF’s F-16 and People's Liberation Army Air Force (PLAAF)'s J-10, J-11, J-16 and J-20"

Jodhpur Air Force: Tejas, a poor performer? | Jaipur News - Times of India

JODHPUR: The Light Combat Aircraft (LCA) Tejas is in news again as the United States’ Air Force chief General David L Goldfein flew a sortie from Jodh.

www.google.com

 

[airtel]

Tejas Mk1 has 0.5 Sq mtr of RCS while MK1 A will have between 0.1 Sq Mtr to 0.2 Sq Mtr of RCS.

*Frontal RCS Without Weapons and drop tanks .

 

[Chandragupt Maurya]

Tejas got one of the best RCS value in the entire 4th generation fighters. Publically available figure is 0.5m2.
The smooth upper wing body blending of Tejas gives it enough Stealth to avoid early detection. This kind of upper body blending is only being seen in later generation fighters from sukhoi, rafale, euro fighter typhoon, F-22, PAKFA, and J-20.

Analysis:- Does LCA Tejas posses stealth? — Indian Defence News

Tejas is a 4+ generation, supersonic, highly maneuverable, multi-role, smallest and lightest in its class contemporary combat aircraft designed for the Indian Air Force designed and developed by DRDO. It is considered ‘game changer’...

defenceupdate.in

 

[ARVION]

Looks like the intakes have been changed. Does LCA Mk1A actually have updated air intakes?

The artist is knewn to make many changes in his renders to make his design better so until any press release from HAL .

 

[patriots]

 

[Bleh]

@Bleh can you compare Tejas vs mirage 2000 performance wise....for the sake of reader s here.....
Please compare mirage 2000 upgraded with Tejas mk1a

As mirage 2000 upgraded is the latest variant....and mk1a will be the latest one...

“A cursory glance of capabilities shows that Tejas is extremely handicapped when it comes to the crucial criterion of the ‘ability to turn’, or change direction rapidly so as to throw off an attacker or turn to face him. On this feature, Tejas is only as capable as a MiG 21 of 1957 vintage. Even the IAF’s Mirage 2000 is better than this,” the official said."

“Further, the agility of Tejas, i.e. the time taken to achieve a given rate of turn or pitch, is also limited by its ‘fly by wire’ control laws which are yet to prove departure protection. No amount of pilot skills will be able to overcome the LCA’s limitations including those on spin tests,” said the official, adding that Tejas might have to run for its own survival when engaged in a combat with PAF’s F-16 and People's Liberation Army Air Force (PLAAF)'s J-10, J-11, J-16 and J-20"

Jodhpur Air Force: Tejas, a poor performer? | Jaipur News - Times of India

JODHPUR: The Light Combat Aircraft (LCA) Tejas is in news again as the United States’ Air Force chief General David L Goldfein flew a sortie from Jodh.

www.google.com

Stopped reading after this: "a senior IAF official closely associated with the testing of Tejas prototypes said that the aircraft fell well short of its design performance goals set in 1982"...Usual hit job.

Hushkit interview placed its turning performance close to Mirage-2000, ITR maybe slightly lesser of were being conservative... STR of 18°/sec can be observed in videos, which is greater than Mirage-2000.

"Limited by its ‘fly by wire’ control laws which are yet to prove departure protection" is correct. Mig-21 do have that only advantage over Tejas. Its AoA have no limiter so it can cross 30° to make modern jets overshoot (again from Hushkit pilot interview) & then accelerate back.

 

[Chandragupt Maurya]

Stopped reading after this: "a senior IAF official closely associated with the testing of Tejas prototypes said that the aircraft fell well short of its design performance goals set in 1982"...Usual hit job.

Hushkit interview placed its turning performance close to Mirage-2000, ITR maybe slightly lesser of were being conservative... STR of 18°/sec can be observed in videos, which is greater than Mirage-2000.

"Limited by its ‘fly by wire’ control laws which are yet to prove departure protection" is correct. Mig-21 do have that only advantage over Tejas. Its AoA have no limiter so it can cross 30° to make modern jets overshoot (again from Hushkit pilot interview) & then accelerate back.

Why they never disclose the name of pilots every Tejas pilot who has been interviewed directly has said its the best 4th generation aircraft in IAF inventory

 

[Chandragupt Maurya]

No 4th generation aircraft is as smart as Tejas except the gripen E (too expensive costs 130 million dollars/Unit)

 

[ARVION]

No 4th generation aircraft is as smart as Tejas except the gripen E (too expensive costs 130 million dollars/Unit)

Source please joker .

 

[Chandragupt Maurya]

Source please joker .

Saab Gripen E: Dark horse - Skies Mag

In a fighter procurement program that will be evaluated on capability, cost and economic return to Canada, Saab firmly believes it has a compelling offer to make.

www.skiesmag.com

 

[ARVION]

Saab Gripen E: Dark horse - Skies Mag

In a fighter procurement program that will be evaluated on capability, cost and economic return to Canada, Saab firmly believes it has a compelling offer to make.

www.skiesmag.com

Cost of production and manufacturing cost plays an major role on the final cost's we could have even lowered the cost if we had idenigious engine and radar and other sub systems .

 

[Chandragupt Maurya]

Saab Gripen E: Dark horse - Skies Mag

In a fighter procurement program that will be evaluated on capability, cost and economic return to Canada, Saab firmly believes it has a compelling offer to make.

www.skiesmag.com

India specific enhancements will further increase the price of gripen beside that it sources systems and subsystems from different countries Sweden is more or less the integrator only

 

[Chandragupt Maurya]

Cost of production and manufacturing cost plays an major role on the final cost's we could have even lowered the cost if we had idenigious engine and radar and other sub systems .

Cockpit of Tejas is the best Tejas mk2 has even better cockpit

 

[ARVION]

Cockpit of Tejas is the best Tejas mk2 has even better cockpit

But all still will be showed by the foreign Dalal's .

 

[Chinmoy]

Distributed architect does not mean central unit is missing but central unit becomes more necessary in a distributed architecture,a master/central unit is the one who commands the modules in automatic fashion or given by pilot,
and again source code requirement only comes in case one wants change the parameters of said weapon, otherwise everything necessary is already provided with the system to interface with master unit or any other necessary functions required by sides.

The only central unit in a jet is the pilot console where the pilot could view various input from sensors and MC. There is no other central unit in a jet.
A MC is just a CPU which performs only one specific function rather then multiple ones unlike other CPU. So in aircraft RADAR, we would have different MC for ST and FC. ST can't take over the FC system. So when you integrate any missile on a fighter, you would need it to communicate with FCS of jet. For this you would need to program both FCS and Missile and would need source code of both.