LCA TEJAS MK1 & MK1A: News and Discussion

[Karthi]

surface pressure field on lca

CFD study of belly abnormal landing

 

[Bleh]

View attachment 96221

surface pressure field on lca

View attachment 96222

CFD study of belly abnormal landing

Source pdf plz

 

[Whitecollar]

View attachment 96221

surface pressure field on lca

View attachment 96222

CFD study of belly abnormal landing

The vortices generated are much more healthy and uniform. I think they increased the height of wings at leading edge to maintain a uniform vortex throughout wing's cross section. Other blue line at front fuselage is chiefly due to refuelling probe so the CFD is calculated for MK1 FOC or MK1A.

 

[lcafanboy]

So DRDO is working on ejection seat too...

Meanwhile for Pakistan...

 

[onlinpunit]

So DRDO is working on ejection seat too...

Meanwhile for Pakistan...

Why ? Most of the jet manufacturer are fine with Martin Baker ones..!

 

[ladder]

Why ? Most of the jet manufacturer are fine with Martin Baker ones..!

Logical upgradation. We have already made canopy severance system (CSC) and intregated into LCA, IJT and HTT40. We have also developed the ejection seat parachute for Su30.
So, logically next development should be ejection seat.

It also frees us from UK govt. pressure via MB to stop export of a certain product to a certain country over their own geopolitical interest.

 

[Spitfire9]

Logical upgradation. We have already made canopy severance system (CSC) and intregated into LCA, IJT and HTT40. We have also developed the ejection seat parachute for Su30.
So, logically next development should be ejection seat.

It also frees us from UK govt. pressure via MB to stop export of a certain product to a certain country over their own geopolitical interest.

Good luck in developing an ejection seat. It would be useful for a rival to MB to emerge in years to come and obviously avoids UK approval being needed for sale to end users.

On that tack - export sales - what would happen if a Mk1A export sale was secured? Would India do what France has done with Rafale and stop deliveries to the home air force while export aircraft were being built? I don't see any other way with a production limit of 16 a year.

At the Defexpo trade show in February 2020, PM Narendra Modi called for an export target of Rs 35,000 crore ($5 billion) annually within five years.

While the trajectory has been impressive thus far, to maintain this momentum and meet the $5 billion target will take some doing. Among the measures already adopted are a mandate for state-owned public sector units to earn 25 per cent of annual revenue through exports by FY2023...

https://www.orfonline.org/expert-speak/taking-indias-defence-exports-to-5-billion-63599/

Restricting Mk1A production to 16 a year runs counter to this expressed target, doesn't it? I hope a decision to increase capacity to 24 a year will be taken soon.

Putting my business hat on, the number of SAAB Gripen, KAI-FA-50 light fighters exported in the last ten years is very small (<100, I guess) so I don't see a market for many MK1A's in the next 10 years (even assuming production was extended/production capacity was increased so that more than 83 could be delivered by 2030). However I think 1 or 2 small orders would be very useful as a learning exercise in terms of providing customer support. That could build customer confidence for MWF, for which I think there will be a much larger market.

I would add the proviso that if Mk1A proves to be an excellent little fighter with cheap Indian weapons available, it may be the best option for countries with limited defence budgets. Who knows, if marketed and sold well it could attract export sales of 50+.

 

[ladder]

Good luck in developing an ejection seat. It would be useful for a rival to MB to emerge in years to come and obviously avoids UK approval being needed for sale to end users.

On that tack - export sales - what would happen if a Mk1A export sale was secured? Would India do what France has done with Rafale and stop deliveries to the home air force while export aircraft were being built? I don't see any other way with a production limit of 16 a year.

https://www.orfonline.org/expert-speak/taking-indias-defence-exports-to-5-billion-63599/

Restricting Mk1A production to 16 a year runs counter to this expressed target, doesn't it? I hope a decision to increase capacity to 24 a year will be taken soon.

Putting my business hat on, the number of SAAB Gripen, KAI-FA-50 light fighters exported in the last ten years is very small (<100, I guess) so I don't see a market for many MK1A's in the next 10 years (even assuming production was extended/production capacity was increased so that more than 83 could be delivered by 2030). However I think 1 or 2 small orders would be very useful as a learning exercise in terms of providing customer support. That could build customer confidence for MWF, for which I think there will be a much larger market.

I would add the proviso that if Mk1A proves to be an excellent little fighter with cheap Indian weapons available, it may be the best option for countries with limited defence budgets. Who knows, if marketed and sold well it could attract export sales of 50+.

Alternate to MB already exists.

The Ejection Site

www.ejectionsite.com

Of them some are good and some are crappy.
But MB currently are the best.

So one might ask, if alternative to MB already exists why develop one more?

It's the same, why we are developing our own artillery when atleast half a dozen suppliers exists.

 

[onlinpunit]

Alternate to MB already exists.

The Ejection Site

www.ejectionsite.com

Of them some are good and some are crappy.
But MB currently are the best.

So one might ask, if alternative to MB already exists why develop one more?

It's the same, why we are developing our own artillery when atleast half a dozen suppliers exists.

When the resources are limited then using them on things like Ejection Seat is waste of resources.
There are many other things which needs urgent attention.
By the way we are also using british radome for tejas . Right ?

 

[ladder]

When the resources are limited then using them on things like Ejection Seat is waste of resources.
There are many other things which needs urgent attention.
By the way we are also using british radome for tejas . Right ?

That too will be replaced.

And please list the developmental projects that are languishing due to fund shortage?

 

[Spitfire9]

That too will be replaced.

And please list the developmental projects that are languishing due to fund shortage?

You say the randome will be replaced. Good to hear. How soon? If your answer is many years, I think you have answered your own question.

 

[Lonewolf]

You say the randome will be replaced. Good to hear. How soon? If your answer is many years, I think you have answered your own question.

One was in testing ,photos were there on a thread here , lighting test if i remember

 

[THESIS THORON]

@ladder will tejas mk1a get jv engine ??

 

[ladder]

You say the randome will be replaced. Good to hear. How soon? If your answer is many years, I think you have answered your own question.

What's the expected answer? In minutes? Or in days?

 

[ladder]

@ladder will tejas mk1a get jv engine ??

Ask @Bleh, he follows development more closely.
Afaik, I don't think so.

 

[THESIS THORON]

@ladder will tejas mk1a get jv engine ??

@Bleh your views ??

 

[Spitfire9]

One was in testing ,photos were there on a thread here , lighting test if i remember

Good to hear. Does it match the performance of the Cobham one (was Cobham, wasn't it?) In reality I don't think that matters - a small performance reduction is acceptable if it eliminates political risk. Especially, too, if it is much cheaper (and I imagine it is).

 

[Lonewolf]

Good to hear. Does it match the performance of the Cobham one (was Cobham, wasn't it?) In reality I don't think that matters - a small performance reduction is acceptable if it eliminates political risk. Especially, too, if it is much cheaper (and I imagine it is).

I think the earlier one was somewhat problematic for it ,new one is being tested ,wait fir result

 

[Vamsi]

@ladder will tejas mk1a get jv engine ??

No, it will be F404 only, whether Kaveri will be integrated in future depends on the dry version of Kaveri and success of 110KN JV engine

 

[MonaLazy]

@ladder will tejas mk1a get jv engine ??

Impossible. How will you feed it with increased airflow (85-90 kg/s) required for delivering 110-120kN from the same inlets designed for F404 (70 kg/s)? The best bet for re-engining Mk1/A is certifying the Kaveri with Safran (dry variant is already slated for testing around 2022-23) including reheat section. Second, best is to use M88-2 (Rafale also flew with F404 initially so both engines should be somewhat interchangeable) by adding some redundancy in controls for single-engined fighters. Latter option seems likely only if MWF fails to stick to its time line- and India goes for a larger order (100+) of Rafale and gets to assemble M88-2s locally.

Mk2 has bigger intakes, so can accommodate the 110kN engine. The India-UK agreement said as much.

In addition to commitments on the Indo-Pacific, the two countries agreed to build on existing government-to-government collaboration on India’s future combat air engine requirement. As part of a ‘2030 Roadmap’, they agreed to work closely together in support of India’s indigenous development of the Light Combat Aircraft Mark 2.