Bharat Rakshak

maitya

https://x.com/alpha_defense/status/1947262674212913304 ---> LCA Mk1A Wing sets from Larsen & Toubro. https://pbs.twimg.com/media/GwYREquaAAACjY_?format=jpg&name=tiny Hope we do realize that had this been a cocured-cobonded tech based upper skin, there'd been none (actually a very few) of th...

maitya

X-Post from the Tejas Mk2 Medium Weight Fighter: News & Discussion thread... https://x.com/dotcom_1106/status/1942109709357715704 ---> ... Ok, so Arithmetic/Unitary-method time folks: 8) 8) First notice the play of words in HAL CMDs quote above: 1) Wrt Engines: 1st in April'2025, 2nd by end-Jul'...

maitya

Jokes apart, there's a significant confusion wrt all these recent news items on HAL's private partner participation in the Mk1A production. It's pretty easy (simple googling will do) to cite new-items from 2019-2021 timeframe, where the very same private partners were supplying the very same major c...

maitya

Below is *MY* Guess : Indian Origin Kit - Reactor + Sonar (updated USHUS) + Weapons (Varunastra Torpedo; BrahMos-S, SLCM, etc in VLS Cell).. French Origin Kit - Propeller Design, Pump Jet Propulsion, Hull Design, X-Shaped Rudder, Combat Management System, etc, etc, etc.... Rakesh: any particular re...

maitya

Oh man!! Oh man!! Oh man!! Round and round we go again - what a merry-go-around tamasha this whole program has degenerated to ... :oops: :oops: The AIP system on offer to India (from HDW) is not proven on the scale of the P-75I submarine i.e. tonnage wise. Now if you add a VLS cell, it would only i...

maitya

VLS Cell is back on Project-75I :) VIDEO : https://x.com/shreedharsingh9/status/1940446487244353663 ---> Brahmos Missile Vertical Launch system will be integrated with coming P75-I Submarine for long range attack says : former CEO & MD of Brahmos, Dr Sudhir Mishra. Oh man!! Oh man!! Oh man!! Ro...

maitya

https://x.com/VinodDX9/status/1942237209689813195 ---> Determining Factors: 1) Fully Indian authorisation 2) Indian systems: uninterrupted integration 3) Engine: Make in India 4) Spares: sustainment 5) Indian systems: seamless integration 6) Profit against investment (long terms) 7) Boost to manufa...

maitya

In an ageing submarine, an opportunity for the DRDO https://chakranewz.com/critical-technologies/trending/in-an-ageing-submarine-an-opportunity-for-the-drdo 04 July 2025 Sandeep Unnithan, as usual, is making too much sense ... so, as a corollary, the MoD baboons will now find out a way not to imple...

maitya

Safran unveils higher-thrust version of M88 for future Rafale upgrades https://www.safran-group.com/pressroom/safran-unveils-higher-thrust-version-m88-future-rafale-upgrades-2025-06-17 17 June 2025 At the Paris Air Show, Safran is unveiling the M88 T-REX, an evolution of its M88 engine. ... The imp...

maitya

<snip> Maityaji, If current Kaveri is close to 50/80kgf at 1024kg weight, it is already close to baseline RD33. In fact wrt tet and weight, it's ahead. https://en.m.wikipedia.org/wiki/Klimov_RD-33 Maybe it's time to stick it into a modified 2 engine Tejas/orca/tedbf airframe that's about 10 tons? T...

maitya

Have added some of my comments/views (in blue ): Here are some historical notes on Kaveri. <snip> 2002 - +3 years IAF cancels plan to use Kaveri for Tejas (at this time there were blade issues and FADEC problems. Some Snecma help was sought, but nothing came to fruition.   2003 - F404 engine chosen ...

maitya

It's 50kN/75kN admiral. Even F404-IN is better. <snip> Now heaven only knows what Safran has proposed to the Indian Govt as part of the AMCA turbofan JV . Could Safran offer to develop the M88-3 and M88-4 as alternatives to the F404 for Mk1A and F414 for Mk2? It is possible, but the question is wil...

maitya

I think, in this hullaballoo, people are missing a very fundamental ask ... there's a need of funding for ALL of the following, concurrently : 1) Flight-Test/Certification of original-K9 OR KDE+A/B (4 Gen TF) 2) Kaveri-II (4.5Gen TF - 90KN) D&D 3) AMCAs 120KN 5th Gen TF D&D, in partnership w...

maitya

DDP MOD - GOI publication - Pt (vi)
So 2nd F404 is scheduled for July'25 ... and then 2/month thereafter ...

maitya

https://x.com/cvkrishnan/status/1925762951706714133 ---> I thought Indian defence discussions, after some initial immaturity would move beyond the, “will GE share us its core engine technology?” , “will Dassault share source codes for its jet?” “Will Naval Group provide its sub data tables?” And no...

maitya

https://x.com/ShiroBarks/status/1917809748549984406 ---> “Our skies must be powered by engines built in India, for India.” • Fast-tracking the Kaveri • Boosting public-private R&D partnerships • Attracting foreign OEMs with co-dev & tech transfer • Developing materials & testing for hig...

maitya

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 Nothing in this article that we have...

maitya

... Max we can ask for, is to i) either allow our GaN (Virupaksa variant) AESA be allowed to be included for all 76 (40 +36) platforms - or maybe all ~100 platforms (40 + 36 + 26). ... ... We went through i) with the Indian Navy asking for the Uttam radar on their upcoming Rafale Ms. We were given ...

maitya

From X - @shreedharsingh9 : Jet Engine parts made from CMC materials https://pbs.twimg.com/media/GnZwcU4W0AAjB6r?format=jpg&name=tiny In this context, further details from @shreedharsingh9 in X: Russia's advancements wrt CMC Turbine Blades https://pbs.twimg.com/media/GogvIpyWMAAtkAe?format=jpg&...

maitya

From Air HQ’s perspective, it is a smart move —> Acquire a small number of Rafales and kill the contest. All the contestants want a minimum order of 100 aircraft to setup a production line. To avoid the geopolitical pressure from Trump (forcing India to select a F-teen), just get a follow-on (albei...

maitya

Rakeshji beat me on this ... Again what does such piecemeal acquisitions mean for MRFA? It never made sense for any other contenders to be acquired, but with such piecemeal acquisitions, the Lic-mfg part also fast becoming a non-sequitur. Is MRFA now going to transform into MRSFA, effectively making...

maitya

From X - @vatsalyamaurya : Russia has developed turbine blade and cooling architecture which allows tet upto 2000-2200 k https://pbs.twimg.com/media/GoVKbeTWsAA7scr?format=jpg&name=900x900 From X - @vatsalyamaurya : Materials in various Russian Engines https://pbs.twimg.com/media/GoVKdHSWQAAHz5y...

maitya

^^^^^ Ideal would have been 57 + 26 = 83 Lic Mfg at the 2nd Line, over a 10 year horizon.
(which means 10/year peak rate - plus any addn "offloaded" vol from the current order-book, to take it to 14-16/year peak rate)

maitya

Must be - though I think they are CMSX4 (2nd Gen SX) based, which in turn would mean ~1075-90 deg C raw-metal-temp capability. But do note 1493deg K (1220deg C) TeT, is way too low for a SX-based blades that employs both , film-cooling* (~250deg C adv) and also with TBC (~150deg C adv) - ofcourse, ...

maitya

maitya, the sx blades are from dmrl. Must be - though I think they are CMSX4 (2nd Gen SX) based, which in turn would mean ~1075-90 deg C raw-metal-temp capability. But do note 1493deg K (1220deg C) TeT, is way too low for a SX-based blades that employs both , film-cooling* (~250deg C adv) and also ...

maitya

From X - @shreedharsingh9 : HTSE - 1200 engine https://pbs.twimg.com/media/Gnib7xNakAA7OMg?format=jpg&name=900x900 Key tech points to note: 1) Effusion cooling architecture (but for Combustor) - since HAL engine div is mentioned, it must be the 3D-printed TF component capability from the HTFE pr...

maitya

From X - @shreedharsingh9:

Jet Engine parts made from CMC materials

maitya

https://idrw.org/lt-proposes-indigenous-110kn-engine-development-urges-government-to-back-merit-over-cost/ shreedhar singh @shreedharsingh9 DRDO has assembled and validated the bi-layer YSZ-LZ coated flaps in an aero-engine https://pbs.twimg.com/media/GnStMxqbcAAlLyc?format=jpg&name=tiny Atmani...

maitya

Upping this thread ... I continue to get asked such questions (on X), but given the limitations of X, will try and reply it here: From X - @shreedharsingh9 : Sir ,What is the thermal resistance of LZ -8YSZ compared to pure 8YSZ ?? From X - @sahilsinghop : What will be the TET of Kaveri if we use LZ ...

maitya

Thanks for jogging the memory, remember that. Hindsight says not a good decision. Perhaps we can reconsider. Maybe become part of global supply chain forf404 (is it still widely used?) if that makes the deal more viable? However that still doesn't explain, what I've been advocating for quite some t...

maitya

Wow!! Courtesy @vatsalyamaurya in X: Detailed information on Izdeliya-30/AL-51 , seeing this for the very first time. Simply dazzling level of 5th Gen (they are claiming 5+ Gen, maybe rightly so) TF technological prowess on display - no wonder Russia is so protective about the IP!! Hard to swallow t...

maitya

https://x.com/shreedharsingh9/status/1898306211130278017 https://pbs.twimg.com/media/GlgjcDAXgAEzgVc?format=jpg&name=tiny Advanced technology for AMca engine Again, nothing new, this is one of the slides from Webinar on Aero Gas Turbine Engine Development in India - 2022 , that was posted by Ra...

maitya

Sir, they are for Mk1. Center, Rear & Front fuselage were all delivered by private vendors. Mk1A would have some changes but shouldn't be very different. Actually that's where the confusion is: All along, for the Mk1 deliveries, we have known Alpha Tocol, VEM Industries, TASL et all have been p...

maitya

HALs Nashik unit to roll out first Light Combat Aircraft MK1A by April end

Other than the headlines, nothing special in the news item wrt MK1A, except for:
1) The Nashik Line has been idle from 2019-20 onwards
2) It took only 150Cr to setup this assembly line - must be a typo!!

maitya

And now From X @ShiroBarks: Center Fuselage by VEM Technologies Sir, they are for Mk1. Center, Rear & Front fuselage were all delivered by private vendors. Mk1A would have some changes but shouldn't be very different. Actually that's where the confusion is: All along, for the Mk1 deliveries, we...

maitya

Blisk Compressor Stage - by @shreedharsingh9 on X

maitya

maitya wrote: ↑12 Mar 2025 19:54
ajay_hk wrote: ↑09 Mar 2025 22:38 First rear fuselage for LCA Mk1A made by Alpha Tocol Engineering handed over to HAL in Bengaluru

...

Here's a closeup of this rear-fuselage: From X @ShiroBarks: Mk1A Rear Fuselage

And now From X @ShiroBarks: Center Fuselage by VEM Technologies

maitya

Maitya Given that both rr&Safran are ahead of us in tech capability, what 'co-development' will actually happen and how much will we absorb from them if they develop the core and we do the lp and ab sections? Foreign oems developed new alloy compositions for new engines and engine related impro...

maitya

maitya ji, we need to become a bit more proactive in this regard, instead of expectantly waiting open mouthed under some random mango tree and hoping against hope that a ripe, juicy, sweet and succulent mango (complete TOT for the latest military jet engine) will miraculously fall into the aforemen...

maitya

Russia’s Tit for Tat to F-35 Offer. Offers the most powerful AL-41 Engine from Su-57 Fighter Jet to India for the Su-30 MKI Russia offers Sukhoi-57 engine for India’s Sukhoi-30MKI upgrade https://www.tribuneindia.com/news/india/russia-offers-sukhoi-57-engine-for-indias-sukhoi-30mki-upgrade/ 12 Feb ...

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