HAL Tejas | Updates, News & Discussions

[adwityagrata]

From where are you getting this remarkable number of 25 billion?

Does 25 billion $ sound remarkable to you ? How about 26 billion $ ? what about 24 billion $ ?

 

[thesolar65]

Well, After two days much talking and discussions about LCA will be over after it goes into production mode and FOC. Now the focus will shift to LCA MK-II with GE-414 engines. My question is to all the experts "Will the Aircrafts that were flying for test purpose (i.e TDs, PVs, NPs and LSPs) be grounded or will they be transferred to IAF as operational fighters or what will be they used for?

Secondly is there any chance that any one or two planes out of these will be fitted with Kaveri Engine for test purpose and see the result of that engine (I think we have at least nine engines)? The Engine was tested in Russia but not fitted in any Tejas TDs. Because I have a hunch that it might give good result by actually testing it by fitting it to Tech demonstrators, just a thought!!

@HariPrasad @sandy_3126 @Dash @Abingdonboy @adwityagrata @IND151 @sancho

 

[shree835]

Well, After two days much talking and discussions about LCA will be over after it goes into production mode and FOC. Now the focus will shift to LCA MK-II with GE-414 engines. My question is to all the experts "Will the Aircrafts that were flying for test purpose (i.e TDs, PVs, NPs and LSPs) be grounded or will they be transferred to IAF as operational fighters or what will be they used for?

Secondly is there any chance that any one or two planes out of these will be fitted with Kaveri Engine for test purpose and see the result of that engine (I think we have at least nine engines)? The Engine was tested in Russia but not fitted in any Tejas TDs. Because I have a hunch that it might give good result by actually testing it by fitting it to Tech demonstrators, just a thought!!

@HariPrasad @sandy_3126 @Dash @Abingdonboy @adwityagrata @IND151

There is LCA fitted with Kaveri Engine for test purpose...on the same Aircraft new avionics is going to be tested.

 

[scientien]

Pl check WIKI it writes 1.8 mach (1920 KMPH). Ajay shukla wrote 1.6 mach (1699 KMPH). There are different version. I do not know why.

Dear dude,
speed of sound is give by equation c=Square root(k/rho) where, k=Bulk modulus and rho=Density of Fluid.
But, Density of fluid changes with respect to pressure because by ideal gas law states that p=rho*r*t
where p=pressure,rho=density,r=gas constant and t=temperature in Kelvin.
but the pressure changes with respect to altitude and is give by, p=-(rho*g*z) where p=pressure,rho=density and z=Height,g=Gravitational Acceleration;
as the altitude increases pressure decreases,decreasing the density and thus cancelling out each other and hence no effect on Ideal Gas(AIR), BUT,
as we know
c=Square root(k/rho) and k=gamma*pressure where gamma=adiabatic index and is further given by
gamma=cp/cv;
cp=specific heat at constant pressure and cv=specific heat at constant volume;
so all in all the Speed of sound depends upon cp and cv which depends on temperature. But temperature depends upon Altitude it decreases for Troposphere and stays constant after tropopause till 20km;
so from 0-11km speed of sound decreases decreasing Mach number and after 11km to 20km it remains constant;
in Aeronautics specially for airplane design we consider altitude only from 0km to 22km.
Thanks.

 

[sancho]

LCA mkII with Astra II ,NG-LGB (ADE) would be a sight to see...

Yes, but prefering to see indigenous stuff is one thing, using them for the defence of the country another, which is dependent on the capability they offer and that is required by the forces. LCA MK2 is not as capable as Rafale, MKI, let alone FGFA, Astra 2 and Sudarshan LGB are aimed on the performance of currently available AAMs or LGBs, while METEOR, coming R77, Derby varients, upgrades of MICA will be ahead, just like foreign LGBs/PGMs. So it will be good to see LCA, Astra and Sudarshan, the defence of the country requires more than that!

 

[IND151]

There is LCA fitted with Kaveri Engine for test purpose...on the same Aircraft new avionics is going to be tested.

Kindly provide source for this

 

[sancho]

Secondly is there any chance that any one or two planes out of these will be fitted with Kaveri Engine for test purpose and see the result of that engine (I think we have at least nine engines)? The Engine was tested in Russia but not fitted in any Tejas TDs. Because I have a hunch that it might give good result by actually testing it by fitting it to Tech demonstrators, just a thought!!

LCA will be fitted with Kaveri sooner or later, but mainly for integration and ground tests. The reports from october said, that the next trials would be at Russian the IL 76 again and possibly Mig 29s (next to 1 x RD33).
We have to continue the engine developments, but also be more realistic about it's possible use, so don't expect it to be fitted into LCA anytime soon. The aim must be upgrading Mig 29K and LCA MK1 (if not replaced by MK2s) and not the integration into MK2.

 

[IND151]

LCA will be fitted with Kaveri sooner or later, but mainly for integration and ground tests. The reports from october said, that the next trials would be at Russian the IL 76 again and possibly Mig 29s (next to 1 x RD33).
We have to continue the engine developments, but also be more realistic about it's possible use, so don't expect it to be fitted into LCA anytime soon. The aim must be upgrading Mig 29K and LCA MK1 (if not replaced by MK2s) and not the integration into MK2.

Kindly give source for this.

 

[thesolar65]

LCA will be fitted with Kaveri sooner or later, but mainly for integration and ground tests. The reports from october said, that the next trials would be at Russian the IL 76 again and possibly Mig 29s (next to 1 x RD33).
We have to continue the engine developments, but also be more realistic about it's possible use, so don't expect it to be fitted into LCA anytime soon. The aim must be upgrading Mig 29K and LCA MK1 (if not replaced by MK2s) and not the integration into MK2.

OK what about 1st question? What to do with TDs,PVs etc?

 

[sancho]

Kindly give source for this.

...Next year, the GTRE plans to show the engine’s performance first on an Il-76 plane and then as the second engine fitted on a twin-engined fighter like MiG-29. It would be tuned to certification standards...

New tailwinds for Kaveri engine - The Hindu

OK what about 1st question? What to do with TDs,PVs etc?

They still will be used for flight, tech or upgrade tests, but not for operational service.

 

[MilSpec]

Yes, but prefering to see indigenous stuff is one thing, using them for the defence of the country another, which is dependent on the capability they offer and that is required by the forces. LCA MK2 is not as capable as Rafale, MKI, let alone FGFA, Astra 2 and Sudarshan LGB are aimed on the performance of currently available AAMs or LGBs, while METEOR, coming R77, Derby varients, upgrades of MICA will be ahead, just like foreign LGBs/PGMs. So it will be good to see LCA, Astra and Sudarshan, the defence of the country requires more than that!

assumption being all mentioned munitions comparable to videsi maal

 

[SR-91]

Does 25 billion $ sound remarkable to you ? How about 26 billion $ ? what about 24 billion $ ?

If you don't know, don't post. Simple

 

[Dazzler]

There is LCA fitted with Kaveri Engine for test purpose...on the same Aircraft new avionics is going to be tested.

Thats strange, kaveri is not a certified engine and still undergoing tests, why would they test it on tejas?

 

[Robinhood Pandey]

Tejas gears up for test flight tomorrow - The Hindu

LCA Tejas, the first made-in-India lightweight fighter plane, has been audibly scorching the Bangalore skies several times over the last few days as it heads for its first-stage flight approval or initial operational certification (IOC) on Friday.

Every day, two to three aircraft have been flying from among the eight limited editions produced for trials, said a senior official involved in the development.

The Light Combat Aircraft completed nearly 500 flights this year compared to over 250 last year. So far, it has made over 2,400 flights since it started flying in 2001.

Everyone is geared up, especially the test pilots who on that day will fly the aircraft in the presence of Defence Minister A.K. Antony, user IAF’s Chief Air Chief Marshal N.A.K. Browne and developer agency DRDO’s Director-General Avinash Chander.

“Challenging task”
The run-up to this level of certification was challenging, said K.Tamilmani, Director-General R&D Aero and head of the military airworthiness certifying agency CEMILAC under the DRDO.

The LCA’s fly-by-wire systems, its glass cockpit among others, were new to the CEMILAC team but it learnt along with the development process. “Today we have a base available in terms of knowledge, procedure and certification. This will be useful for LCA versions of the Navy, trainer and Mark II, as well as the proposed Advanced Medium Combat Aircraft. There is a new confidence in the team,” he told The Hindu.

The IOC was split into two phases and the first partial certification was given in January 2011. This week’s IOC-2 will complete the rest of the requirements and enable IAF pilots to fully start flying the fighter.

The fighter will be inducted after it gets the final operational certification or FOC, slated for December 2014.

The LCA has been developed by the multi-agency Aeronautical Development Agency (ADA) set up under the Ministry of Defence in 1984. The National Flight Test Centre under ADA coordinates the test flights — as it will do on Friday.

The IAF plans to raise a fleet of some 200 LCAs over the coming years. The planes will be produced by Hindustan Aeronautics Ltd.

Since IOC-1, the plane has passed multiple weapon release trials, including the recent missile firing. It has been exposed to various air fields, cold Leh and hot Nagpur. The radar and systems are being constantly improved.

Air Chief reviews proposed first base for Tejas LCA

New Delhi: Outgoing IAF chief NAK Browne on Wednesday reviewed the progress of the Sulur air base where the force is to deploy its first squadron of the indigenously- developed Light Combat Aircraft (LCA), Tejas.

On his last visit to the Southern Air Command in Thiruvananthapuram, Browne also reviewed the preparations being made at Thanjavur air base in Tamil Nadu, which will host the first squadron of Su-30MKI aircraft in southern India to guard the Indian Ocean Region.

"During the visit, the Air Chief reviewed the progress of the first LCA base at Sulur and also the progress of work services at Thanjavur, which will be the next base for Su-30s," the IAF said in a release.


Talking to air force personnel, Browne said, "IAF is going through tremendous changes in terms of induction, modernisation and improvement. We had set very ambitious goals over the last two-and-a-half years and we have been able to achieve each one of them".

In the last three to four years, India has procured a lot of equipment for the Air Force, including the C-17 heavylift transport aircraft, Pilatus trainer aircraft. The indigenous LCA is to be inducted on December 20.

 

[shree835]

Kindly provide source for this

After haggling for over eight years, it has been finally decided to instal the electronic systems on the LCA prototype Version-1. But there’s a catch here. The PV-1 has not flown for very long and has been parked in the hangar with later versions of the LCA undertaking the test flights. The PV-1, which began flights in around 2001-02, has completed 242 test flights after which it has been grounded. Now, there is a bit of anxiety about how an aircraft that has not done flights for long will perform with the new electronic warfare systems.

Finally, Tejas gets electronic warfare systems


Mentioned PV1 is fitted with Kaveri Engine...As I know PV1 will be kept active for all the test.