Kaveri & Aero-Engine: News & Discussion

The Military Issues & History Forum is a venue to discuss issues relating to the military aspects of the Indian Armed Forces, whether the past, present or future. We request members to kindly stay within the mandate of this forum and keep their exchanges of views, on a civilised level, however vehemently any disagreement may be felt. All feedback regarding forum usage may be sent to the moderators using the Feedback Form or by clicking the Report Post Icon in any objectionable post for proper action. Please note that the views expressed by the Members and Moderators on these discussion boards are that of the individuals only and do not reflect the official policy or view of the Bharat-Rakshak.com Website. Copyright Violation is strictly prohibited and may result in revocation of your posting rights - please read the FAQ for full details. Users must also abide by the Forum Guidelines at all times.
Kartik
BRF Oldie
Posts: 3985
Joined: 04 Feb 2004 12:31

Re: Kaveri & aero-engine discussion

Postby Kartik » 27 Feb 2018 01:26

This news about Safran being very close to signing a deal with DRDO to develop the Kaveri-M-88 hybrid is apparently true. Got that confirmation from a French source. We'll find out soon enough as to what is being planned.

Cybaru
BRF Oldie
Posts: 2205
Joined: 12 Jun 2000 11:31
Contact:

Re: Kaveri & aero-engine discussion

Postby Cybaru » 27 Feb 2018 01:51

Kartik wrote:This news about Safran being very close to signing a deal with DRDO to develop the Kaveri-M-88 hybrid is apparently true. Got that confirmation from a French source. We'll find out soon enough as to what is being planned.


Admiral jee, mithai to banteen hain aaab!

Rakesh
Forum Moderator
Posts: 5993
Joined: 15 Jan 2004 12:31
Location: Planet Earth
Contact:

Re: Kaveri & aero-engine discussion

Postby Rakesh » 27 Feb 2018 01:53

Mithai and Champagne bottle waiting.... :)

Kartik
BRF Oldie
Posts: 3985
Joined: 04 Feb 2004 12:31

Re: Kaveri & aero-engine discussion

Postby Kartik » 27 Feb 2018 02:20

It will be a momentous occasion if that happens. Safran apparently still doesn't want to openly talk about it, perhaps because there's many a slip between the cup and the lip..so we'll just have to keep our fingers crossed till President Macron arrives.

I don't care too much about the finer details of what exactly is the technology support we get or what the French decide is too strategic to part with. As things stand, the Kaveri engine program was at risk of being completely abandoned and with it, decades of work. If this JV goes through, the chances of an indigenous turbofan engine powering an indigenous fighter will increase exponentially. And that, in the long run, is what matters the most.

Rakesh
Forum Moderator
Posts: 5993
Joined: 15 Jan 2004 12:31
Location: Planet Earth
Contact:

Re: Kaveri & aero-engine discussion

Postby Rakesh » 27 Feb 2018 02:41

+108 Kartik! That is all that matters at the end of the day.

ramana
Forum Moderator
Posts: 50763
Joined: 01 Jan 1970 05:30

Re: Kaveri & aero-engine discussion

Postby ramana » 27 Feb 2018 04:26

+108!!!!

Prem
BRF Oldie
Posts: 20907
Joined: 01 Jul 1999 11:31
Location: Weighing and Waiting 8T Yconomy

Re: Kaveri & aero-engine discussion

Postby Prem » 27 Feb 2018 05:08

Like Samosa
SeinKaveri Ki Jorri: Addhi Terri Addhi Merri !

suryag
Forum Moderator
Posts: 3152
Joined: 11 Jan 2009 00:14

Re: Kaveri & aero-engine discussion

Postby suryag » 27 Feb 2018 06:52

Viking to Vikas, M88->Kaveri

Cain Marko
BRF Oldie
Posts: 3247
Joined: 26 Jun 2005 10:26

Re: Kaveri & aero-engine discussion

Postby Cain Marko » 27 Feb 2018 07:43

Rakesh wrote:Mithai and Champagne bottle waiting.... :)

Arrey saar jingoes been waiting for famous unobtanium mithai for so long....Ab champagne ke sapno pey latkaogey kya. You must've for sure been part of the MOD in a past life, saarey BR vasiyon ko latka Ke rakha Hai aur ab naye rfi (champagne) ki baat chala Rahe ho.... :D

Cybaru
BRF Oldie
Posts: 2205
Joined: 12 Jun 2000 11:31
Contact:

Re: Kaveri & aero-engine discussion

Postby Cybaru » 27 Feb 2018 08:48

I am picking up my dabba of mithai and bottle too soon!

Singha
BRF Oldie
Posts: 63631
Joined: 13 Aug 2004 19:42
Location: the grasshopper lies heavy

Re: Kaveri & aero-engine discussion

Postby Singha » 27 Feb 2018 09:29

that would be a billion well spent imo if it truly delivers a product.

Prasad
BRF Oldie
Posts: 6983
Joined: 16 Nov 2007 00:53
Location: Chennai

Re: Kaveri & aero-engine discussion

Postby Prasad » 27 Feb 2018 11:17

Kartik wrote:This news about Safran being very close to signing a deal with DRDO to develop the Kaveri-M-88 hybrid is apparently true. Got that confirmation from a French source. We'll find out soon enough as to what is being planned.

What have they been working on so far? If at all they have I mean.

Neela
BRF Oldie
Posts: 3552
Joined: 30 Jul 2004 15:05
Location: Spectator in the dossier diplomacy tennis match

Re: Kaveri & aero-engine discussion

Postby Neela » 27 Feb 2018 11:47

Can someone clarify what the m88 core means.
Does it mean turbine section, afterburning section as well HP compressor stages?

If it includes the compressor stages, there is little of our own R&D in it. FADEC will also be Snecmas as core fuel injection etc will be controlled through it.

That leaves only the fan & LP stages

Neshant
BRF Oldie
Posts: 4666
Joined: 01 Jan 1970 05:30

Re: Kaveri & aero-engine discussion

Postby Neshant » 27 Feb 2018 13:32

Will wrote:If the French are investing 1 Bn of their own money think there is something bigger in the pipeline. Probably a joint development of an engine for the AMCA.


They are not really investing anything.
Rather offered their services at the rate of 1 billion to insert the core of their M88 into the kaveri as an offset for India purchasing the Rafales - which India accepted.

India is paying through its nose for what amounts to a largely foreign engine clothe in Indian fabric. i.e. M88-Kaveri

Its perhaps 1 step up from screw driver turning aka assembling foreign designed products and paying a huge bill to do so- which is the lowest cast profession around.

GOI is failing massively on promoting the development of a domestic aerospace R&D base.

Aditya_V
BRF Oldie
Posts: 9882
Joined: 05 Apr 2006 16:25

Re: Kaveri & aero-engine discussion

Postby Aditya_V » 27 Feb 2018 14:12

I think this is a positive step, Unless GE 414 engines are goign to be manufactured in India will full tot because

1) If this engine will work , it gives designers an engine around which to build the LCA MK 2 and AMCA.

2) This also help us to understand better about Jet engines and Manufacture and keep the production lines going.

3) In such Assembly and manufacture we should be able to overhaul and maintain these engines within India.

So in war time these engines can be maintained in India for atleast 3 to 6 months, making them partly sanction proof.

The only thing I hope GOI is separately funding our own engine developments.

Vips
BRFite
Posts: 1248
Joined: 14 Apr 2017 18:23

Re: Kaveri & aero-engine discussion

Postby Vips » 27 Feb 2018 20:01

Uncle Sam's next move will be crucial. They will have to offer something more substantive then the the French if they want to have direct/indirect control over new birds which will be with IAF for the next 50 years.
We should have involved greater number of players in the engine program to ensure some hot core TOT.

madhu
BRFite
Posts: 213
Joined: 12 Oct 2005 17:00
Location: India

Re: Kaveri & aero-engine discussion

Postby madhu » 27 Feb 2018 20:34

guys, i am having lunch with Dr. K. Ramachandra, Former Director, GTRE on Friday. if you have any specific questions on kaveri engine just PM/post. will try to get it for you.

Rakesh
Forum Moderator
Posts: 5993
Joined: 15 Jan 2004 12:31
Location: Planet Earth
Contact:

Re: Kaveri & aero-engine discussion

Postby Rakesh » 27 Feb 2018 20:45

Cain Marko wrote:
Rakesh wrote:Mithai and Champagne bottle waiting.... :)

Arrey saar jingoes been waiting for famous unobtanium mithai for so long....Ab champagne ke sapno pey latkaogey kya. You must've for sure been part of the MOD in a past life, saarey BR vasiyon ko latka Ke rakha Hai aur ab naye rfi (champagne) ki baat chala Rahe ho.... :D

:rotfl: :lol:

Rakesh
Forum Moderator
Posts: 5993
Joined: 15 Jan 2004 12:31
Location: Planet Earth
Contact:

Re: Kaveri & aero-engine discussion

Postby Rakesh » 27 Feb 2018 20:47

madhu wrote:guys, i am having lunch with Dr. K. Ramachandra, Former Director, GTRE on Friday. if you have any specific questions on kaveri engine just PM/post. will try to get it for you.

Can you please ask Dr Ramachandra - if he is aware - on which of the following two has been adopted? Very insightful post by Ramana-ji.

ramana wrote:I think there are two options here.

1) Increase the M88 core diameter to match the Kaveri system. This means keep the rest of the (TCA) T/F+ Casing+ AB same.
- This option is risky as changing core to match the TCA could be tricky.
- However GTRE will learn the most from this option as they learn to resize the core.

2) Keep the M 88 core as it works and redo the TCA as GTRE knows how.
- Could be long drawn out process as three systems have to be developed: T/F+ Casing + AB And more costly from Indian side. Kind of defeats the offsets as India gets to spend twice.
- GTRE wont learn anything new as they already had developed the TCA. Redoing the TCA is not new technology.

JayS
Forum Moderator
Posts: 3606
Joined: 11 Aug 2016 06:14

Re: Kaveri & aero-engine discussion

Postby JayS » 27 Feb 2018 21:14

madhu wrote:guys, i am having lunch with Dr. K. Ramachandra, Former Director, GTRE on Friday. if you have any specific questions on kaveri engine just PM/post. will try to get it for you.


Thanks for the generous offer. There are many questions but if would be good to get some authoritative word on following two.
1. Has the Kabini core achieved design objectives..? And Dry thrust meeting the design goal..?
2. What are the gaps remaining still for Kaveri to reach finish line. As far as I figure out two main issues are there - one is flutter in Fan blades at certain flight regimes and second is sub-optimal functioning of A/B. Can you confirm if this is correct assessment or there's more to it..?

ramana
Forum Moderator
Posts: 50763
Joined: 01 Jan 1970 05:30

Re: Kaveri & aero-engine discussion

Postby ramana » 27 Feb 2018 22:44

And above all please invite him to join the forum. Would add a lot of value.

Rakesh
Forum Moderator
Posts: 5993
Joined: 15 Jan 2004 12:31
Location: Planet Earth
Contact:

Re: Kaveri & aero-engine discussion

Postby Rakesh » 28 Feb 2018 07:06

Safran close to India combat jet engine deal: sources
https://in.reuters.com/article/safran-i ... NKCN1GB31E

France’s Safran (SAF.PA) is close to an agreement to supply a version of its M88 military jet engine for India’s Tejas light combat aircraft, two people close to the discussions said. The deal, if confirmed, could be finalised during a visit to India by French President Emmanuel Macron next month, they said, adding that negotiations could still be blown off course. Safran declined comment. French newspaper La Tribune, which first reported the possible deal, said the M88 would be offered as part of a revived version of India’s stalled Kaveri jet engine programme, which was initially linked to the Tejas. The Tejas fighter entered service in 2016, 33 years after it was approved as the country sought to build a modern fighter from scratch for an air force that was entirely dependent on foreign - mostly Soviet-origin - aircraft. But the single-engine plane has been dogged by production delays at state-run Hindustan Aeronautics and only a small number have so far entered the air force, currently powered by engines from General Electric.

Singha
BRF Oldie
Posts: 63631
Joined: 13 Aug 2004 19:42
Location: the grasshopper lies heavy

Re: Kaveri & aero-engine discussion

Postby Singha » 28 Feb 2018 09:22

the euros may be more likely to share things given their funding situation and arms embargo on china the moneybags.
for GE, a billion here or there is a coin in piggy bank due to massive scale of massan orders.

ramana
Forum Moderator
Posts: 50763
Joined: 01 Jan 1970 05:30

Re: Kaveri & aero-engine discussion

Postby ramana » 28 Feb 2018 10:24


A Deshmukh
BRFite
Posts: 268
Joined: 05 Dec 2008 14:24

Re: Kaveri & aero-engine discussion

Postby A Deshmukh » 28 Feb 2018 11:07

Are they planning a M88-Kaveri engine for Tejas Mk1A? this will need a round of testing and re-certification. will delay the procurement of Mk1A.

IMHO, M88-Kaveri should be used for Tejas Mk2 or M1B or whatever, without delaying the 83 M1A procurement.

SaiK
BRF Oldie
Posts: 36074
Joined: 29 Oct 2003 12:31
Location: NowHere

Re: Kaveri & aero-engine discussion

Postby SaiK » 28 Feb 2018 12:16

It would be an upthrusted version of M88. JMT

Yagnasri
BRF Oldie
Posts: 9299
Joined: 29 May 2007 18:03

Re: Kaveri & aero-engine discussion

Postby Yagnasri » 28 Feb 2018 14:59

French are largely sanction proof deal. That should be one of the main considerations. Not fully as it used to be. Remember the ship deal they broke with Russia? They may allow us to export LCA more than Khan.

madhu
BRFite
Posts: 213
Joined: 12 Oct 2005 17:00
Location: India

Re: Kaveri & aero-engine discussion

Postby madhu » 28 Feb 2018 18:16

JayS wrote: Has the Kabini core achieved design objectives..? And Dry thrust meeting the design goal..?

He told that he do not remember exact number for the thrust but it was close to what was needed. In fact it is too compact and he felt that GTRE has done a very good job on core engine.

JayS wrote:What are the gaps remaining still for Kaveri to reach finish line. As far as I figure out two main issues are there - one is flutter in Fan blades at certain flight regimes and second is sub-optimal functioning of A/B. Can you confirm if this is correct assessment or there's more to it..?

The major problems of flutter induced vibration of fan and initial compressor blades were fixed. In fact due to pattern factor combustor LP turbine blades were getting excitied to torsional mode. He told all these were fixed. The issue are meeting the dry thrust and thrust with A/B. currently with out A/B is still around 47 kN( ~8% short) and Full afterburner ~76 kN ( not sure) or so…
He told this can be achieved by pluged the leak and other small redesign to increase. He feels another 5% ( in short fall of current 8%) can be done with ease but reaching 100% thrust will be tough.

JayS wrote:What are the gaps remaining still for Kaveri to reach finish line...?

It has to be ground tested on actual flight: taxing , low altitude flight and high altitude flights to get qualification. He told India do not have region specific certification criteria. What is following is best from all certificates. So we have a tight requirements.

Rakesh wrote:Can you please ask Dr Ramachandra - if he is aware - on which of the following two has been adopted? Very insightful post by Ramana-ji

He told the issue was sorted back in 2000 itself that we will have Kaveri core and rest of it be re-designed. In fact all the people (GE/France/Russia) were ready to work with GTRE with Kaveri core and develop.

Ramana wrote:And above all please invite him to join the forum. Would add a lot of value

He is almost 70’s and is actively involved in teaching. Guiding few Phd’s.
Last edited by madhu on 28 Feb 2018 21:23, edited 1 time in total.

Rakesh
Forum Moderator
Posts: 5993
Joined: 15 Jan 2004 12:31
Location: Planet Earth
Contact:

Re: Kaveri & aero-engine discussion

Postby Rakesh » 28 Feb 2018 20:09

A Deshmukh wrote:Are they planning a M88-Kaveri engine for Tejas Mk1A? this will need a round of testing and re-certification. will delay the procurement of Mk1A.

IMHO, M88-Kaveri should be used for Tejas Mk2 or M1B or whatever, without delaying the 83 M1A procurement.

Don't think along the lines - yet - of mating Kaveri with a specific Tejas variant.

Right now the goal is to test the engine, certify the engine and then begin production of the engine. That's it.

The F404 engine is there right now for Mk1 and Mk1A. Let them continue with that.

Rakesh
Forum Moderator
Posts: 5993
Joined: 15 Jan 2004 12:31
Location: Planet Earth
Contact:

Re: Kaveri & aero-engine discussion

Postby Rakesh » 28 Feb 2018 20:13

SaiK wrote:It would be an upthrusted version of M88. JMT

I am thinking along the same lines as well. Safran's CEO has been talking about uprating the M88 for a while now. He believes the Rafale has gotten heavier over the years with the newer variants rolling out: F1 ---> F2 ---> F3 ---> F3R ----> F4. However Dassault was not biting, perhaps they did not want to invest the money in uprating the M88. Now with the Indian Rafale deal, Safran got a perfect opportunity to do just that. Regardless, it is a big benefit for India. These are the articles I read back in 2016 of Safran's CEO wanting to uprate the M88 turbofan...

Safran wants to boost M88's thrust to 20,000 lbs
http://alert5.com/2016/03/17/safran-wan ... 20000-lbs/

Safran Plans Engine Upgrade For Dassault Rafale Fighter Jet
http://www.defenseworld.net/news/15614/ ... pbFVtKWxMs

However, let us wait till what President Macron has to say on March 10th. But just like I said, I strongly believe they will follow the Turbomeca Shakti model, in which HAL is doing screwdrivergiri on the Ardiden 1H1 turboshaft for the Dhruv and Ardiden 1U turboshaft for the LUH.

I want them to test the Kaveri88 on the Rafale onlee. One engine bay M88 and another engine bay Kaveri88.

Next phase of testing to have both engine bays with Kaveri88. Once certification is complete, then license production can begin.

Have our own Rafales, Tejas and possibly MiG-29Ks with Kaveri88 turbofans.

Chai-Biscoot-Samosa Time :)

Rakesh
Forum Moderator
Posts: 5993
Joined: 15 Jan 2004 12:31
Location: Planet Earth
Contact:

Re: Kaveri & aero-engine discussion

Postby Rakesh » 28 Feb 2018 20:15

Madhu: Thank you so much for the replies to all the queries, including mine. Very Happy.

ramana
Forum Moderator
Posts: 50763
Joined: 01 Jan 1970 05:30

Re: Kaveri & aero-engine discussion

Postby ramana » 28 Feb 2018 22:31

A Deshmukh wrote:Are they planning a M88-Kaveri engine for Tejas Mk1A? this will need a round of testing and re-certification. will delay the procurement of Mk1A.

IMHO, M88-Kaveri should be used for Tejas Mk2 or M1B or whatever, without delaying the 83 M1A procurement.


No. It will be for replacement engines after the F404 are end of life. So no jeopardizing Mk1A or even Mk2. However if GE balks then, expect in Mk2.

ramana
Forum Moderator
Posts: 50763
Joined: 01 Jan 1970 05:30

Re: Kaveri & aero-engine discussion

Postby ramana » 28 Feb 2018 22:43

Madhu, Thanks. So it's the Kabini core that's good and rest have to be rejigged.

Can we ask you questions once in a while for you to run it by him?
That way we have a way to get gnan like Ekalavya?

Rakesh
Forum Moderator
Posts: 5993
Joined: 15 Jan 2004 12:31
Location: Planet Earth
Contact:

Re: Kaveri & aero-engine discussion

Postby Rakesh » 28 Feb 2018 22:48

Ramana-ji, can you please translate for this nanna mujahid whether it is scenario 1 or scenario 2 (in your post) that worked out.

JayS
Forum Moderator
Posts: 3606
Joined: 11 Aug 2016 06:14

Re: Kaveri & aero-engine discussion

Postby JayS » 28 Feb 2018 23:10

Rakesh wrote:Ramana-ji, can you please translate for this nanna mujahid whether it is scenario 1 or scenario 2 (in your post) that worked out.


Neither, if I understand correctly.

JayS
Forum Moderator
Posts: 3606
Joined: 11 Aug 2016 06:14

Re: Kaveri & aero-engine discussion

Postby JayS » 28 Feb 2018 23:16

madhu wrote:
JayS wrote: Has the Kabini core achieved design objectives..? And Dry thrust meeting the design goal..?

He told that he do not remember exact number for the thrust but it was close to what was needed. In fact it is too compact and he felt that GTRE has done a very good job on core engine.

JayS wrote:What are the gaps remaining still for Kaveri to reach finish line. As far as I figure out two main issues are there - one is flutter in Fan blades at certain flight regimes and second is sub-optimal functioning of A/B. Can you confirm if this is correct assessment or there's more to it..?

The major problems of flutter induced vibration of fan and initial compressor blades were fixed. In fact due to pattern factor combustor LP turbine blades were getting excitied to torsional mode. He told all these were fixed. The issue are meeting the dry thrust and thrust with A/B. currently with out A/B is still around 47 kN( ~8% short) and Full afterburner ~76 kN ( not sure) or so…
He told this can be achieved by pluged the leak and other small redesign to increase. He feels another 5% ( in short fall of current 8%) can be done with ease but reaching 100% thrust will be tough.

JayS wrote:What are the gaps remaining still for Kaveri to reach finish line...?

It has to be ground tested on actual flight: taxing , low altitude flight and high altitude flights to get qualification. He told India do not have region specific certification criteria. What is following is best from all certificates. So we have a tight requirements.

Rakesh wrote:Can you please ask Dr Ramachandra - if he is aware - on which of the following two has been adopted? Very insightful post by Ramana-ji

He told the issue was sorted back in 2000 itself that we will have Kaveri core and rest of it be re-designed. In fact all the people (GE/France/Russia) were ready to work with GTRE with Kaveri core and develop.

Ramana wrote:And above all please invite him to join the forum. Would add a lot of value

He is almost 70’s and is actively involved in teaching. Guiding few Phd’s.


Hajar pranam for confirmations. So the info I posted previously on the status of Kaveri from what I gathered from AI-17 was bang on the bucks.

The numbers I had in my mind were 49kN and 72kN. A country like China would have ran with the fabulous success that GTRE has achieved against all the odds. And here we keep harping endlessly and go around with begging bowl for alms still.

I think your post should be copied to the Kaveri sticky thread. I will do so.

Indranil
Forum Moderator
Posts: 6987
Joined: 02 Apr 2010 01:21

Re: Kaveri & aero-engine discussion

Postby Indranil » 28 Feb 2018 23:24

Madhu, thanks a lot. What an example of a good post and poster. Nuggets of gold with no crap.

If there is ANY way that we could involve him at this forum, I am ready to work with you on this. Please PM me.

ramana
Forum Moderator
Posts: 50763
Joined: 01 Jan 1970 05:30

Re: Kaveri & aero-engine discussion

Postby ramana » 28 Feb 2018 23:28

JayS wrote:
Rakesh wrote:Ramana-ji, can you please translate for this nanna mujahid whether it is scenario 1 or scenario 2 (in your post) that worked out.


Neither, if I understand correctly.





SAFRAN is planning a new Engine with the M-88 core and the TCA periphery will be designed around it.

GTRE can be happy they got close to finish line but not across it.
The retired director has said achieving 100% of the goals is not possible.

They did this with under $350 M stretched over so many years.


By redesigning the TCA they can fix the vibration in fan, the chamber will fit round the core and the after burner will take care of developing the thrust there.

Recall the A/B is used for take off and to escape dog fight. So is used crucial 20% of life say but very crucial.

If I had my say I would have had the LCA weight gains and used the Kaveri without calumny.

Would have funded GTRE for Kaveri 2 for the Mk2 and continued.

But officialdom has the luxury to give $1.2B to France and get it back as investment in JV.

But not one paisa to GTRE.

The Scientific Adviser to RM should have been more forceful about funding GTRE. They did fantastic job with the meager allocation.

JayS
Forum Moderator
Posts: 3606
Joined: 11 Aug 2016 06:14

Re: Kaveri & aero-engine discussion

Postby JayS » 28 Feb 2018 23:42

I am quoting my old posts from AI-17 time in current context.

viewtopic.php?f=3&t=3351&start=3040#p2119110
JayS wrote:
I am told 54kN/81kN thrust is achieved. I specifically asked for wet thrust against since we know there was shortfall there. But GTRE folks were insisting that they have achieved 81kN now. Both the compressor flutter and screech issues are resolved now, if you believe them.

SCB is GTRE+DMRL project. SCB with 2nd Gen alloys process is matured tech now, Industrialization of the process is remaining. Apart from making raw blades two more key things lacking are final machining of the SCB's and TBC. MIDHANI is working on this. And they are confident they can do it in 2-3yrs. Right now the blades are to be sent abroad for one or both of these two processes anyway, which is not desirable.

If you notice, Kaveri is running with max 1700K TET value. Currently its not using any SCBs, only DS blades, as per GTRE folks. There is a gap of ~200K here from the state-of-the-art.


viewtopic.php?f=3&t=3351&start=3040#p2119152
JayS wrote:
Its know from public sources those two problems where uncovered. Interestingly a guy from GTRE manning the stall told me they are paying Russians just so they wouldn't share the mods GTRE did to remove those issues. Now how much one wants to buy into this is up to oneself. :)

Snecma claims 1850K TET for M88. So just by porting that HPT tech they can boost TET by 150K..!!

But my guess is they will not do much technical changes in the engine itself, if what GTRE says is true. The said 25% remaining work to make it flightworthy is majority flight testing only without much HW changes. Even if we get flight testing know-how and facilities set up with Snecma's help that itself would be significant for us. We already know Kabini core is working well. It was only the issue with LP system and AB. If those two things are solved then there's nothing really remained in Kaveri to do. Just fly it and certify. Other changes can be done in next iteration.

Also, Kaveri Marine project is not going anywhere since Navy changed the requirements. Now they want next gen specs, I am told.

Rakesh
Forum Moderator
Posts: 5993
Joined: 15 Jan 2004 12:31
Location: Planet Earth
Contact:

Re: Kaveri & aero-engine discussion

Postby Rakesh » 28 Feb 2018 23:49

Thank you JayS and Ramana-ji. Much appreciated.


Return to “Military Issues & History Forum”

Who is online

Users browsing this forum: Austin, ssaravanan and 35 guests