ADA Tejas (LCA) News and Discussions

[W.G.Ewald]

How many hours can tejas stay air borne?

This source says 2.3 hours.

India's LCA TEJAS

Manufactured : Indigenous

General characteristics

* Crew: One
* Length: 13.20 m (43 ft 4 in)
* Wingspan: 8.20 m (26 ft 11 in)
* Height: 4.40 m (14 ft 9 in)
* Wing area: 38.4 m² (413 ft²)
* Empty weight: 5,000 kg (11,023lb)
* Loaded weight: 12,500 kg (27,600 lb)
* Max takeoff weight: 15,500 kg (34,100 lb)
* Powerplant: 1× General Electric F404-GE-F2J3 or -IN20 or Kaveri(Indigenous) (under development and trials) turbofan, 80.5 kN (18,100 lbf) / 85 kN In case of IN-20 (>19,000 lbf)/around 100-125 KN as per revised iaf requirements ()
* Internal fuel capacity: 3000 liters
* External fuel capacity: 5×800 liter tanks or 3×1,200 liter tanks, totaling 4,000/3,600 liters

Performance

* Maximum speed: Mach 1.8 / supersonic at all altitudes
* Range: 2,000 km/2.30 hr (without refuling) (1,242 mi)
* Service ceiling 15,950+ m (50,000 ft(Engine re-igniter safely capable))
* Wing loading: 221.4 kg/m² (45.35 lb/ft²)
* Thrust/weight: 0.69

Program cost :US$1.2 billion
Unit cost :US$21 million
US$31.09 million (Naval version)

China's JF-17 Vs India's LCA Tejas - Military Affairs - Chinadaily Forum

 

[ersakthivel]

If enough R&D is done by the time PAKFA is inducted in 2025 ,we could very well induct fully stealth TEJAS mk-III with higher power engine and internal bomb bays.Tejas is now more mature platform to takeup this upgrade.

Being physically smaller it will have a third of 5th generation fighter RCS in stealth version.If there is a need we can even add another engine to tejas,rather than wasting time on another complete new platform called AMCA.It has much better fuselage wing body blending leaving enough space for internal bomb bay integeration.It has no peeping features like canards or complex tail fins now.

IAF top brass in once again sending ADA on a long deep R&D voyage in the name of AMCA.

5th gen.TEJAS in mk-III can do much beter

 

[ersakthivel]

So it will be better for ADA to develop twin engine version of LCA mk-II along with single engine version on the line of mirage -4000 which was exclusively developed for SAUDI ARABIA by dassault. Whatever may be the IAF wish ADA should develop this plane with aerodynamic features as close to TEJAS AS possible with stringent stealth compliant airframe and internal bomb bays.

As ADA has already mastered composites and promises ASEA on tejas mk-II it completes all the tech requirement for 5th gen stealth fighter.The engine problem will also be solved because GTRE and -KAVERI are going for JV anyway.

The twin engined stealth version of tejas with ASEA and composites will be very cost effective as it may share many LRUs and avionics and mission computer elements and ASEA RADAR it will be as lethat as PAKFA for which we are sinking in close to 30 billion !!!!!!!!!!!!! dollars if we include lifecycle costs and upgrades.

The flight test program undertaken for LCA will considerably shorten the developmental and test flight period!!!

WHy IAF ,MOD and ADA are not even considering this???

The rafale which is about 150 million dollars per piece will be lower than this twin engined tejas version in capabilities.Surely tejas mk-III stealth with twin engines wont even cost half of RAFALE.So it will have definite export potential and lethality on par with export version of any 5th gens.

Well if parallel development of this twin engined stealth version is taken up in parallel with LCA mk_II,it may even enter service along PAKFA!!!!!

The chinese are following the same way for the development of their second jet fighter J-30 or some thing,which looks exactly like J-20.But Indians are not even thinking about it!!!!!!!!!!!!!

 

[ersakthivel]

Wing loading is a silly parameter anyway.

My point remains the same though. High wing loading can sustain a turn better than a low wing loading aircraft. That was my point since always and no amount of bickering will change the laws of physics.

Most people forget that most aircraft have body lift designs, so that is not calculated when calculating wing loading. Add Relaxed stability and FBW, wing loading is an obtuse way of finding out performance.

Wing loading is more relevant to passenger aircraft than fighters.

The sustained turn performance and vertical agility of any fighter is determined by three factors all are equal,
1.Angle of attack,
2.Thrust to weight ratio
3.Low wing loading.
It is the combination of these three factors that determine fighter agility.

Surely with the advent of delta wings each and every modern fighter like RAFALE,F-22,PAKFA,EUROFIGHTER,LCA all have low wing loadind.

It was only in pre fly by wire,pre dleta era of simple compond wings fighters were made with high wing loading more suitablle for the tree top level dumb bomb dropping roles.With compound crucifix wings you cannot increase the size of wing area because it will make wings longer and they will strat interfering with shock waves outside the supersonic shock wave no drag zone.

People in old days portraed this simple neccasary fact as a virtue by saying "OUR FIGHTERS HAVE HIGH WING LOADING AND ARE EXCELENT IN SUSTAINED TURN RATE AT LOW ATMOSPHERE".

with HMD facility no one can escape the WVR missile like PYTHON and MICA by higher sustained turn rate of high wing loading fighter, as these missiles will finish you off however tight you turn.

But Low wing loading delta fighters like mirage, grippen ,LCA have higher instantaneous turn rate that will help in shaking of the missile at close quarters and also quickly point their nose at their opponents with higher instantaneous turn rate and get a lock and fire the WVR missile.

Also low wing loading fighters typically excel at higher altitudes from where they can give higher range to their BVR missiles and can have longer combat radius because they are generally optimized for high altitude, low drag conditions of upper atmosphere.
In these conditions high wing loading fighters cannot beat low wing loading deltas.

bUT WITH THE ADVENT OF awacs AND HIGH ACCURACY QUICK REACTION SAMs and laser guided bimbs and stanoff missiles that can be released from high altittude these low level flying skills of high wing loading fighters are in fact more dangerous than virtue.

That's why modern fighters like F-22 ,RAFALE ,LCA, PAKFA all have low wing loading high altitude performance as the first priority over low level nap of the earth flying skills of pre AWACS era and dumb bombs.

So in no way can anyone with claims of expertise in aerodynamics can say that wing loading is an obscure parameter related to passenger aircrafts .

 

[Ganesh2691]

Where is LCA – Tejas Project heading?

In Last few months we at idrw.org have been receiving similar emails from concerned Citizens, asking status and updates on the Lca Tejas Program. Our Previous articles had hinted about the sorry state of affairs on Indigenous aircrafts (HAL is struggling with Indigenous Aircrafts ).

Again Sources are not coming out with much useful information and certainly it seems like some kind of Media Gag has been imposed by developing agencies, all that sources are saying is "we are looking forward to Fire power demonstration to be held Next year by IAF which will showcase Tejas for the first time".

Idrw.org have contacted "other sources "which have provided some information on its current status , idrw.org are only putting down information provided by not so regular sources .

* Tejas after Fire power demonstration next year will be cleared for Air to Ground (A2G) Roles only, if IAF is satisfied with the outcomes of the exercise.

* Tejas not yet has cleared Air to Air (A2A) roles yet and aircrafts are currently been getting up-gradation (Radars and avionics and BVR and WVR missiles integrations) on older aircrafts (PV and LSP).

* Tejas once cleared of A2G roles will start A2A testing and it is expected that along with it and other test, FOC will be achieved in 2015.

* Unlikely that in early 2013 SP-1 and SP-2 will be handed over to IAF, Most likely it will be mid or late 2013.

* Flight envelope has been opened up, but nothing to write about says sources, since Target has not been achieved.

* Radar likely to be cleared for A2G mode in current stage.

* HAL might squeeze in first flight of LSP-8 by year end.

* A2G tests have been good and satisfactory as per sources, IAF to take the final call next year.

* Mid-air refuelling testing with IAF's IL-78 tankers should start next year.

* Slower rate of productions of LSP has created another sets of problem; many aircrafts (LSP) are not identical in terms of Avionics and structural changes (ex, Optimization of APU intakes and different pilot avionics layout in latter variant). Leading to delays in upgrading of older aircrafts with current changes.

idrw.org will post again if we have any other kind of information on it .

Where is LCA – Tejas Project heading? | idrw.org

 

[Agnostic_Indian]

btw why is the so low wing loading lca, got lower service sealing ?

 

[ersakthivel]

btw why is the so low wing loading lca, got lower service sealing ?

Lack of thrust due to the 80=kn engine .Once if this goes up to 100 kn in mk-II with more wing area with lengthened fuselage and wing section this service ceiling will also go up.refer the specs of mk-II in any source for this info.for this.

 

[ersakthivel]

Where is LCA – Tejas Project heading?

In Last few months we at idrw.org have been receiving similar emails from concerned Citizens, asking status and updates on the Lca Tejas Program. Our Previous articles had hinted about the sorry state of affairs on Indigenous aircrafts (HAL is struggling with Indigenous Aircrafts ).

Again Sources are not coming out with much useful information and certainly it seems like some kind of Media Gag has been imposed by developing agencies, all that sources are saying is "we are looking forward to Fire power demonstration to be held Next year by IAF which will showcase Tejas for the first time".

Idrw.org have contacted "other sources "which have provided some information on its current status , idrw.org are only putting down information provided by not so regular sources .

* Tejas after Fire power demonstration next year will be cleared for Air to Ground (A2G) Roles only, if IAF is satisfied with the outcomes of the exercise.

* Tejas not yet has cleared Air to Air (A2A) roles yet and aircrafts are currently been getting up-gradation (Radars and avionics and BVR and WVR missiles integrations) on older aircrafts (PV and LSP).

* Tejas once cleared of A2G roles will start A2A testing and it is expected that along with it and other test, FOC will be achieved in 2015.

* Unlikely that in early 2013 SP-1 and SP-2 will be handed over to IAF, Most likely it will be mid or late 2013.

* Flight envelope has been opened up, but nothing to write about says sources, since Target has not been achieved.

* Radar likely to be cleared for A2G mode in current stage.

* HAL might squeeze in first flight of LSP-8 by year end.

* A2G tests have been good and satisfactory as per sources, IAF to take the final call next year.

* Mid-air refuelling testing with IAF's IL-78 tankers should start next year.

* Slower rate of productions of LSP has created another sets of problem; many aircrafts (LSP) are not identical in terms of Avionics and structural changes (ex, Optimization of APU intakes and different pilot avionics layout in latter variant). Leading to delays in upgrading of older aircrafts with current changes.

idrw.org will post again if we have any other kind of information on it .

Where is LCA – Tejas Project heading? | idrw.org

Problem with reports like this is they don't identify the source of this delay.The source is the lesser powered GE engine on the LSPs.Once higher power GE engines arrive for SP version we can have marginal increase in thrust and without the performance of critical spin test and stall recovery test AOA cannot be opened further.

For this purpose ADA is getting consultancy from EADS.

People who get all these scoops from informed sources should have known the basic reasons for this dealy.
Also IAF approval and suggestions and modifications should be incorporated in SP-1s and further so there is a point in delaying production further till feedback from IAF is received.

 

[ersakthivel]

The problem I find with idrw.org,and livefist is that they don't make comprehensive posts based with detailed reasoning and comparison of LCA tejas with other programs like RAFALE, F-35, EUROFIGHTER, PAKFA.

If proper comparison is made then LCA project's timeline is same as above.

For example EUROFIGHTER started around 1970s,it still has no asea and it still has no ground bombing capability.

RAFALE too started out at the same time ,it's first asea version is yet to be fully certified.RAFALE's each engine produce exactly 75 kn wet thrust same as the supposedly FAILED GTRE-KAVERI ENGINE.They too are proposing engine upgrades that too if indian order materializes only,because new engine development is a complex long drawn process that willl be undertaken only if there are enough export orders for RAFALE.

The naval version of eurofighter will never be done as there are no orders with the comming of F-35.Due to massive uncorrectable vibration issues all RAF eurofighters are flying at only 80 percent of their speed and performance specs.The germans are blaming the other partner nations for poor manufacturing quality,which results in this vibration issues!!!!!!!!

The SUKHOI's PAKFA design was selected by RUSSIA on 1998.The first proto type that flew recently is not even a prototype,it is a PHOTO OPP.After 14 long years of design!!!. That too after 300 million dollar funding by IAF based on the condition it should be a two seater version with as much stealth as F-22,incidentally both the conditions dishonoured.

The LCA fares much better with funds release in 1993 of 5000 cr for two tech demos on 1993 and first flight on 2001!!!!.Despite the steep criticism of IAF it's tech demo is as close a match to final version as possible even for a greenfield program, unlike PAKFA which is an evolved simple sukhoi airframe

The phot opp that flew in the name of PAKFA is just a modified airframe of sukhoi with internal bomb bay installations, and slight height of engine center line from inlet duct centerline,with no new engines ,no ASEA, and a quoted stealth RCS of 0.3 sq meter, which incidentally is claimed by EUROFIGHTER TYPHOON.


Compessor fanblades of PAKFA are still visible from the front with no serpentine air intake, and Russians claim that it is 5th gen stealth.Even LCA masks it's compressor fan blades fully with Y duct intake.The russians haven't even implemented serpentine air intake after 14 years of R&D and they are claiming DSI bumb like F-35 and radar blockers employed by HORNETS will do the job.

That's why IAF is quietly dropping it's two seater fantasies and 100 percent stealth claim on PAKFA , and like an obedient student reducing orders to 144 single seaters.(They are dumping these loads on ADA in the form of AMCA specs is entirely another matter for another thread)The IAF has no inkling of the new engine design.Even if they put an improved version of SUKHOI's engine they will quietly agree,unlike the way they threw the spanner on GTRE-SNECMA JV (then the A.K.ANTONY set up a joint committee of IAF and GTRE and ADA to clear the proposal after two years delay)

The icing on the cake is the RUSSIANS have left all avionics jobs to HAL and DRDO!!!.The avionics and sensor fusion algorithms and mission computers are the brain and nerve system of any fighter aircraft.Now after quietly paying how many billions( we wont know untill the last moment ) the FGFA is expected to fly with exposed compressor fan blades only in 2025.

So these website can make the comparision of LCA program with the goals achieved and time taken for these international showpiece programs of the supposedly advanced avionics powers.A tailpiece it toook ISRAEL close to 20 years to finetune their 2032 MMR(not asea) even with tech help from US.

Guess what our so called defence correspondents from TIMES OF INDIA's RAJAT GUPTHA to IDRW to LIVEFIST will all keep their stony silence on isssues like these.But whenever they write their "INFORMED " coloumns about LCA they will always start off with a reel like after 30 years the LCA still can't fly.........With zero regard to facts like the country pledged it's gold during CHANDRA SEKAR's tenure to avoid default on the forex front and the funding for LCA was released with a caveat,that too only in 1993 of two tech demos first and PVSS only after all the tech was proven .

 

[ersakthivel]

The IAF praised every russian mig till all their tech deficiencies are undeniable, but at the same time they are setting a standard so stringent on LCA.Now they will quietly gulp whatever they will be offered in the name of FFGA with exposed compressor blades and no avionics,with an engine they don't know anything about.

.They have already prepared the ground with pared down order of 144 FFGAs.If you compare the accident rates and servicability issues of MIG-21,23 with MIRAGE you can know how russian fighters are always praised way beyond their worth by IAF.

For example only 2 mirage fighters of IAF crashes after 25 years of service life.What is the record of RUSSIAAN MIGs and SUKHOIs?

Even in redflag exercise ther was an innocuous report that said that IAF pilots minutely inspected the runway each time before a sukhoi take -off.The american pilots were bemused by this behaviour of IAF pilots according to the report.We will know the issues only after 30 years like the IAF quietly declared that MIG engines have insurmountable technical defects leading to the grounding of entire MIG-23 fleet after the death of squadron leader in a cash.Will IAF say the same about MIRAGE's engines? NO.WHy?

Even now we could have had a rafale in our own hand if only people in IAF and MOD supported ADA with parallel development of a twin engine fighter alongside the single engined LCA.Now rafale flies with 150 kn of thrust with 75 kn engine of thrust from each of it's engines and our IAF is sullivating at the prospect of owning this crash proof jets unlike the russian stuff they pilot that will crash anytime.That is what missed by the country with myopic people with vesed interest occupying key positions.

The LCA with twin engines is an exact equivalent of RAFALE which now quotes 160 million dollars at international market.But the tragedy is nobony is willing to procure a 120 kn EPE engine for TEJAS from GE inplace of the 20 year old GE-414 enginw

 

[agentperry]

The IAF praised every russian mig till all their tech deficiencies are undeniable, but at the same time they are setting a standard so stringent on LCA.Now they will quietly gulp whatever they will be offered in the name of FFGA with exposed compressor blades and no avionics,with an engine they don't know anything about.

.They have already prepared the ground with pared down order of 144 FFGAs.If you compare the accident rates and servicability issues of MIG-21,23 with MIRAGE you can know how russian fighters are always praised way beyond their worth by IAF.

For example only 2 mirage fighters of IAF crashes after 25 years of service life.What is the record of RUSSIAAN MIGs and SUKHOIs?

Even in redflag exercise ther was an innocuous report that said that IAF pilots minutely inspected the runway each time before a sukhoi take -off.The american pilots were bemused by this behaviour of IAF pilots according to the report.We will know the issues only after 30 years like the IAF quietly declared that MIG engines have insurmountable technical defects leading to the grounding of entire MIG-23 fleet after the death of squadron leader in a cash.Will IAF say the same about MIRAGE's engines? NO.WHy?

Even now we could have had a rafale in our own hand if only people in IAF and MOD supported ADA with parallel development of a twin engine fighter alongside the single engined LCA.Now rafale flies with 150 kn of thrust with 75 kn engine of thrust from each of it's engines and our IAF is sullivating at the prospect of owning this crash proof jets unlike the russian stuff they pilot that will crash anytime.That is what missed by the country with myopic people with vesed interest occupying key positions.

The LCA with twin engines is an exact equivalent of RAFALE which now quotes 160 million dollars at international market.But the tragedy is nobony is willing to procure a 120 kn EPE engine for TEJAS from GE inplace of the 20 year old GE-414 enginw

international arms market is not like walmart, i want this and i will get it, in case of russian migs procurement one thing is that india needed a fighter in huge nos and on urgent basis, Migs were the only option as west was aligned to pakistan and in no way India could have withstood the pressure from west iff IAF had western fighters in its fleet. this is the reason why IAF shifted from british fighters to russian.
in case of lca, ie after 2000, drdo is offering a good fighter no doubt but its no where near Su-30 and rafale.

also war is not a show off quest, in war air force needs capable fighter WHICH CAN TAKE DOWN ENEMY. if it cant then nation will lose unimaginable no of ground troops, assets and psychological advantage that comes with air superiority.

If tejas was developed by 1995 then only it was fruitful, now India is different, World is different and even enemy is different( china).

so tejas is a MISFIT in this scenario.

 

[p2prada]

international arms market is not like walmart, i want this and i will get it, in case of russian migs procurement one thing is that india needed a fighter in huge nos and on urgent basis, Migs were the only option as west was aligned to pakistan and in no way India could have withstood the pressure from west iff IAF had western fighters in its fleet. this is the reason why IAF shifted from british fighters to russian.
in case of lca, ie after 2000, drdo is offering a good fighter no doubt but its no where near Su-30 and rafale.

When the Mig-21 was chosen, it wasn't a one off deal, it was through an international tender where even F-104 participated. There was one more aircraft I guess, I forgot or I am mistaken. The Soviets gave away the Mig-21 for nearly free, soft loans and pay back in Rupees or goods. It was an offer a poor country like ours could not refuse. Over time we came to know that the F-104 was actually a lemon, so we only gained with the Mig-21. At the time we inducted it the Mig was a new generation aircraft.

 

[p2prada]

Theoretically a little over 2 hours if you count 3 drop tanks.

Half that without drop tanks.

Other than that it depends on flight profile. Like loiter in this place for this long, then a supersonic dash to this area and loiter for this long and return to base etc etc. Weapons carried adds to drag and hence reduces range. So, it could be anywhere between 15 minutes and 2 hours. Mid air refueling will always extend endurance.

Normally aircraft like LCA almost always carry drop tanks to extend endurance.

 

[ersakthivel]

international arms market is not like walmart, i want this and i will get it, in case of russian migs procurement one thing is that india needed a fighter in huge nos and on urgent basis, Migs were the only option as west was aligned to pakistan and in no way India could have withstood the pressure from west iff IAF had western fighters in its fleet. this is the reason why IAF shifted from british fighters to russian.
in case of lca, ie after 2000, drdo is offering a good fighter no doubt but its no where near Su-30 and rafale.

also war is not a show off quest, in war air force needs capable fighter WHICH CAN TAKE DOWN ENEMY. if it cant then nation will lose unimaginable no of ground troops, assets and psychological advantage that comes with air superiority.

If tejas was developed by 1995 then only it was fruitful, now India is different, World is different and even enemy is different( china).

so tejas is a MISFIT in this scenario.

Articles quote the RCS of PAKFA at 0.3 sq meter which may be just the same as tejas, so why are you calling it a misfit?

How can one develop a fighter plane in 1995 when funds were released on 1993 for two tech demos only?

You are saying arms market is not like wal mart.And we cannot buy western stuff.
Then how did we get mirage,jaguar,Gnat, and scorpene subs? and how france steadfastedly supported us even during the nuclear test?
How do you conclude that LCA is nowhere near rafale and sukhoi with costs at one third of each of them?
Do you think even three LCAs won't be good enough to beat sukhoi or rafale?
In one on one with SUKHOI and LCA ,which fighter will see first, lock first and shoot first,provided they have the same range of BVRs and EW support?

SO in times of long drawn war we are expected to look at the next ship from russia braving the chinese navy that will supply us critical spares !!!!!!!

Don't you think that by having a few hundred 100 percent home made tejas we can breathe esy.

Or tell me which chinese 4th gen fighter has a lower RCS than RCS ,that can track and shoot bvrs first at LCA without being shot at?

The IAF ordered PAKFA in 2005 with the caveat that it should have stringent stealth and two seater version. Now it is ready to sink in 20 billion dollars when both the conditions are belied.That too for a design evolved from SUKHOI.

How much money was put into LCA --just 4 billion dollars for a brand new fighter.the IAF fought tooth and nail from 1983 to 1989 which resulted in MOD dithering the funding.!!!!!!!!

If it is not for RATAN TATA's intervention the program could have been closed years before.If it is not for ABDUL KALAM funds for it would never have been released.Even after seeing the nuclear bombs and agni missiles and super computers that are home made ,why did IAF oppose this project in 1983?

Even while accepting a watered down stealth version of PAKFA from russians why is the IAF insisting on a brand new design for AMCA? why doesnot IAf evolve the LCA design like the same way sukhoi and chinese did for their 5th gen program which will result in faster induction of AMCA.

please answer.

 

[ersakthivel]

When the Mig-21 was chosen, it wasn't a one off deal, it was through an international tender where even F-104 participated. There was one more aircraft I guess, I forgot or I am mistaken. The Soviets gave away the Mig-21 for nearly free, soft loans and pay back in Rupees or goods. It was an offer a poor country like ours could not refuse. Over time we came to know that the F-104 was actually a lemon, so we only gained with the Mig-21. At the time we inducted it the Mig was a new generation aircraft.

My question is MIGs are praised by IAf until yesterday, then why are they discrediting tejas every day?and choke it's funds with continued criticism that ADA was not good enough from 1983 to 1989?which resulted in the funds of 5000 cr released only in 1993 for two demos.Havent they seen tht indian scientists delivered nuclear devices in 1974 agni missiles and prithvi missiles in 1980s and space launches from ISRO and super computers from DRDO?
Why were they so vehement in opposing LCA from 1983 that ADA can't do it?
ADA proved them wrong by building it within 8 years of funding.Have the MIG-21s conformed to ASR of IAF?

Even today if you put a tejas mk_I against a sukhoi with same long range missiles and ew support who will see first and shoot first?
Everyone knows which fighter will have less RCS.

Then don't you think that not supporting tejas from the start as one of the biggest folly by IAF?

If only a paralle program of twin engined tejas was pursued even with so called under powered KAVERI we could have a RAFALE equivalent at hand by now.Remember each engine of RAFALE produces only 75 kn of power now. The IAF is singing praise of this fighter.The kaveri also produced same 75 kn in recent flight tests.

If at all people with brains supported ADA for a paralle twin engine fighter program ,we would have a completely indian made twin engines tejas with astra missile and kaveri engine by now.

 

[ersakthivel]

http://icast.org.in/news/2011/apr11/apr04bs.pdf

it clearly says that the tejas will open it's full flight envelope only in a phsed manner and figures that are in the open for tejas is for partially opened flight envelope meaning it is deliberately operated below it's actual specs due to FCS restrictions.

 

[ersakthivel]

1. He pointed out that the change in IAF requirements and the increase in all up wt by 2 tons killed the Kaveri as they knew it, simply because it could not in any way be able to achieve the new requirements... he was quite angry that they had been blamed for what was obviously not their fault, ie, a low-performing Kaveri for the updated reqs. Bypass Ratio is 0.16 to 0.18... he pointed out that if it had to meet the new stds, the bypass would have to be at least 0.35 to 0.45.

the above is the quote from the chief of GTRE T.MOHAN RAO from aeroseminar 2011 presentation of kaveri engine.
The head of the organization responsible for developing KAVERI engine is conclusively saying that IAF changed the requirements (meaning redrafting of ASR) of ADA LCA TEJAS project ,which resulted in the tejas weight going up by 2 tons.So it is conclusive.

Now can members like P2PRADA who kept on maintaining through out this thread that the IAF never changed their requirements for LCA will accept that their statement as false?

Their contention is that the weight increase in LCA tejas is due to the inefficient design effort by ADA and not due to the change in ASR by IAF.

Now the GTRE chief's statement in his press conference has openly confirmed that the above statement is a lie.

 

[ersakthivel]

The Rcs of tejas will be about 0.3 sq meter in clean configuration.

http://www.------------------/forums...-antibody.html
http://-----------------------/threa...database.4130/

Any calculation for what it will be with air to air loadout with no external fuel tanks with only air to air missiles in pint defence role?

 

[W.G.Ewald]

You are saying arms market is not like wal mart.And we cannot buy western stuff.

You can't buy western stuff at Wal*Mart. You can only get Chinese stuff.:cool2:

 

[ersakthivel]

You can't buy western stuff at Wal*Mart. You can only get Chinese stuff.:cool2:

Even INDIA imports about 50 billion dollars worth of chinese goods every year.projected to increase to 100 billion in a few years.