Bharat Rakshak

Kailash

The nature of air war is changing. Fanne ji, I'm in 100% agreement. Kinetic performance like speed and maneuveability though vital, is not everything in today's war. Speed of fighter design can't catchup with speed of missile or radar development, or speed of EW development. Beauty is it doesn't ha...

Kailash

Even if Kaveri weight is brought to say under 1100 kg with a 81KN wet thrust, with the flat rating, kaveri is nothing to be scoffed at. What we need is integration, even if it finally leads us only to a less powerful export variant of Tejas. A slightly heavier, similar thrust Tejas doesn't sound so ...

Kailash

yt rumour has it that PV-5 and one more lca PV will be used to qualify it. No takeoff without A/B. Either too many milestones have been kept well hidden, or we are still a few years off. It will be interesting to wartime a scenario where 404 supplies stop abruptly and we are forced to integrate an ...

Kailash

Has the full scale development of Ghatak UCAV been sponsored yet?

We should immediately fly what we have, while trying to improve it. Is the A/B integration done??

Kailash

Maitya ji, if these companies are so cash strapped, would it not make sense to buy them outright or at least take some strategic stake in in these companies? Another noob question I have is don't we have a combined requirement for over 2000-3000 engines in the next twenty years? Will we not extract ...

Kailash

Not sure what or how much technology infusion this means - co-production of jet engines with Japan
https://www.tribuneindia.com/news/india ... k-engines/

Kailash

was this posted earlier - https://alphadefense.in/index.php/2025/04/13/key-improvements-in-the-kaveri-engine-by-gtre/

Talks a lot about weight reduction. Blisks for LPC/HPC stages, PMC ducts. Also talks of CMSX-4/TBC usage contributing to slight increases in TeT

Kailash

https://manufacturing.economictimes.ind ... /119742196

Kailash

Someone really proficient should do a proper interview of GTRE/DMRL folks to bring out specific question and answers for the same. Really hoped substantial would come out of AI2025....

Kailash

https://youtu.be/bOGeLf349Go Makes so much sense. He talks of about requirements drafting, psqr, regressive military airworthiness bill, certification, IP creation and impossible situation under which OEMs work etc. Risk reward ratio something they don't understand. Failures can't be frowned upon, ...

Kailash

Even the japanese have a high altitude engine test facility. We lack creativity when trying to find solutions. This is assuming we did not want to go to any of the western nations.

Please let it not be money that we persist with the Russians

Kailash

Really hope we have a few squadrons of the UCAV, just to allow unobstructed manufacturing of kaveri KDE.. if not for anything else, to keep the private players commercially interested on the project. Knowing the history that we know, it's time to trust in God, add KDE to your prayers🙏🙏 It is extreme...

Kailash

Indigenization appreciation hour from Saurav Jha covered various advancements in the kaveri dry variant like the new fan, new FADEC, SC blades, drilled cooling channels, TBC, wide arc blade design etc. https://www.youtube.com/live/_pWc1Hy-wTg Called a KDE kaveri derivative engine. Starts off around ...

Kailash

https://youtu.be/gwH7R4fvpQs

S Jha is one of the sane voices i respect. He does acknowledge we need an omnibus program with large budget for engine development. Lot of information there about mk2, our fighter production/testing and aero engines. Engine related content from around 50 minutes

Kailash

Idrw reports substantial progress in the 130KN twin engine test bed facility by GTRE

Kailash

Every failure results in someone getting shunted out, degrading their career prospects and and leaving them staring at bleakish looking future. High tech sarkari projects have seriously high attrition levels at the mid to junior levels and they seriously bleed good talent to industry in exchange fo...

Kailash

This is a question to all seniors, why can we not delink a mission mode engine dependent initiative, incubate and fund it irrespective of customer wants? Why not design something around what we do perfect?? Kaveri is anyways a delinked project as far as LCA or AMCA is concerned. Then why the compuls...

Kailash

Basant ji, thought I see the logic in your argument. But I feel research funding/timelines should not be held captive to requirements of services. In other words, engine research should be sustained with a vision for a family of useful engines ranging from turbo-shaft, -prop, -jet , -fan with as muc...

Kailash

In all those 5th gen tech to be achieved bilayer coatings are probably the only things that we are close to achieving. Saw an article few weeks ago UK is perfecting mass manufacturing of CMC. French roti there leap engines could already have some CMC knowhow. So between the European powers i guess F...

Kailash

Maitya ji, I don't see the French in your long post defining the short medium long and ultra long term plans. Was this deliberate? Do we not need them in the mix?

Kailash

So this new fan is part of the 8 engines produced already. Will this additional fan fit within the envisaged dimensions/weight of the afterburning Kaveri?

Kailash

Astra Mk3 or SFDR uses a Russian engine bought off the shelf (or) DRDO is developing this with Russian assistance?

Kailash

Idrw reports France is more open to tot on shakti after noticing htse-1200 making progress. link We are who we are, only because of them. Once we have become them, do we still need them? Hope India does not abandon it's research, exhibits some long term vision in aero engines. HTSE is our long term ...

Kailash

It is a twin engine jet. My supposition is 230*2*2(replacements over lifetime), could be to the upwards of 900+ engines. If that's not the case we'll probably be getting the IPR, paying a one time royalty on future production as well..

Kailash

5-7 years in dedicated effort is not an issue.. from upa2 times the need to upgrade su30mki and reducing dependence on OEM has been in focus. Significant progress has happened in terms of most russian LRUs. Real question would be how the Russian warranty claims is evaluated, especially during time o...

Kailash

Maitya ji, can we make a clone of an AL-31FP locally without depending on Russia?

Kailash

New engines from raw material stage

Kailash

Series production of aesa radar - GaN??

Kailash

update from alpha defense

Over 54kn for the version that was tested in Russia?
Brahmos making AB.
Talks of better material and weight saving, though there are no specific numbers

Kailash

https://idrw.org/kaveri-drdo-plans-to-lighten-kaveri-engine-for-enhanced-performance/#more-344262 1180kg currently with AB. If they could really get it to under a ton (another 180-200kg) Kaveri would be a world beating engine. Though I doubt that they can. Unless there is massive redesign, they are...

Kailash

Can someone explain the engine certification process post high altitude testing completion in Russia? If there are different rule books used by Russia, US, UK, France, which one are we using?

Are there efforts to build our own rule book for certification of future engines?

Kailash

https://idrw.org/indias-kaveri-engine-e ... k1a-fleet/

Talks of a new after burner that'll take "kaveri 2.0" to get to a wet thrust of 83-85kn

Kailash

As someone pointed out, OEMs never start with a clean slate while developing a new engine. So in a co-development what is the fair share of work that Indian technologists can bring to the table? Where is the leverage here? I strongly believe that salvation still resides in pursuing Kaveri. GE and Sa...

Kailash

chandrayaan separated, Congratulations

Kailash

Cryo stage performance normal

Kailash

Excellent posts Maitya ji. Gives a lot of hope in terms of the future of the program and what are the low hanging fruits. When we have 2000+ engines required in the next 3-4 decades, I am just appalled that people with the purse string don't see the logic of releasing funds to GTRE. I hope Kaveri re...

Kailash

It's all too muddled and murky now. Always thought the carrier based fighter tender would be an indicator of how the engine contact might go. But discussions with France is stalled. There is a real need for GE as we have at least 3 platforms on the drawing board based on F414. If at there is some se...

Kailash

Thomas ji's comments are extremely well timed, considering our negotiations are going full steam with both US and UK. It seems to be a game of poker right now. May be we kaveri is already there, may be it is not. The dark period between the project closure in 2014 to 2022 have given us the opacity r...

Kailash

Probably France is overconfident with their leverage with the existing Rafale jets, and the impending 114 jet sale. Engine selection will have a very direct impact on MRFA selection and maintenance. French may be least forthcoming, even though It is their opportunity to lose.

Kailash

snip... and of course, the weight itself (950kg vs 1150Kg) etc. Do we have the materials and/or the design capability to reduce the weight without outside help as of today? Is there any research being done into CMCs and other exotic materials? I have seen the gyan thread on the compression ratios, ...

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