ADA Tejas (LCA) News and Discussions

[Coalmine]

^^^ last 100 flights seems to have been covered very fast.

 

[Sam2012]

Who likes this video?

Indian Air Force - LCA Tejas [Full HD] - YouTube

 

[Defcon 1]

^^^ last 100 flights seems to have been covered very fast.

Thats because of Aero India and Iron fist. Apart from that the rate of flights is close to what it was in July, just before grounding.

 

[ersakthivel]

http://www.scribd.com/doc/122140248/CFD-in-india

in Fig. 6 for angle of attack a = 13° and 18° . A fairly goodcomparison is observed. The vortical flow field capturedin calculations is presented in Fig. 7. The particle tracesillustrate the detailed structure of the rolled-up vortices.It is seen that the leading edge vortices are strengthenedas the flow develops progressively away from the leading-edge of the win

If people wan't to know the software tests and computations behind tejas they can go to the above link.So saying ADA found out that the plane was too draggy after 10 years of flight test and only to rectify that they went for mk-2 and it's AOA is stuck on 16 degrees or top speed is mach 1.6 only and it is subsonic in sea level are all borne out of ignorance of this design process.

The test flight program is only evaluating and verifying the design based upon computational fluid dynamics software. other than minor modification there is no place for big mistakes in this state of the art design process.And the green dots on the graph shows the experimental results from flight tests compared to the red line of software calculated values. The soft ware calculations are actually validated in flight tests with no major deviation as shown in this graph.

So achieving the design top speed for the air frame arrived by software simulation , in flight test program is not an unexpected result based on coincidence and trial and error. if the air frame is designed with a particular AOA and top speeds at altitudes with particular drag during design time , it will achieve the same parameters in flight test time with no room for errors.

All design parameters were evaluated with fluid dynamics software before the first metal was cut. in fact this design process has been followed abroad on cutting edge projects in abroad.

 

[Mariner HK]

:thumb: 'Tejas' LCA project likely to be completed in 2015

The country's indigenous Light Combat Aircraft (LCA) 'Tejas' programme is now expected to be completed only by March 2015 and is one of the major projects undertaken by the Defence Research Development Organisation(DRDO) which is running behind schedule by several years, the Rajya Sabha was informed on Wednesday.

Union Defence Minister A K Antony said in a written reply that the deadline for the 'Tejas' project, which was originally scheduled for completion by December 2008, was likely to be extended till March 2015 as it had already breached the December 2012 revised deadline.

The IAF is eagerly waiting for the DRDO to complete the LCA project so that it could replace the ageing Soviet-era MiG-21s,which had earned the sobriquet'flying coffins' following the numerous air crashes involving them.

The Upper House was also informed that as many as 34 MiG fighter planes had crashed in the last five years and six pilots were killed in the accidents along with five civilians. As for the DRDO's delayed projects, the minister noted that the Naval LCA was now scheduled for completion by December 2014 as opposed to its original schedule of March 2010.

The Naval LCAs are likely to be the combat air element of the country's first Indigenous Aircraft Carrier (IAC) that is now under construction at the Cochin Shipyard (CSL) and which in all likelihood may join the Navy by December 2015.

Similarly, the indigenous aeroengine 'Kaveri', which the DRDO had been developing for the LCA too was badly delayed, resulting in the Hindustan Aeronautics Limited (HAL) going in for the American GE F414 engines for the Mark-II versions of the combat plane.

The Airborne Early Warning and Control System (AEW&CS), a transport aircraft-mounted radar known as a major force multiplier capable of being an 'eye-in-the-sky' for the Indian armed forces, too has been delayed and will now be ready only by March 2014.

Also running behind schedule is the Long Range Surface-to-Air Missile (LR-SAM), which is now scheduled for completion only in December 2015.

Antony said the reasons for the delay in these projects included ab initio development of the state-of-the-art technologies, non-availability of trained and skilled manpower to work on the projects and lack of infrastructure and test facilities in the country.

Regarding the delay in the ongoing Scorpene submarines' project at the Mumbai-based Mazagon Docks Limited (MDL), the minister blamed it on the slow procurement of the raw materials. "The project is being closely monitored by the Union Ministry of Defence (MoD) and the Navy to ensure its completion without any further delay," he said.

 

[Mariner HK]

MoD please upload this picture .Thank You.

:thumb:

 

[ersakthivel]

Reason for he delay in the project was the delayed funding of Two tech demos which were approved only in 1993. It is no wonder that our honest defence minister will ever muster the courage to say it loud. All fly by wire new fighter programs (like TYPHOON) of the much more experienced multinationals with many completed fighter project under their belt have adhered to similar time line of Tejas is also something that will never be told.

The advanced jet trainer hawk and jags are still flying without crashin. So why should people link the crappy ejection system of Mig-21 to tejas?

Pilots are killed in Mig-21 crashes because of the faulty pilot ejection system not by the delays in Tejas.When mirages and sukhois crash pilot escapes with ejection systems .

 

[arnabmit]

Instead of putting the uri of the imageshack page, you need to put in the uri of the image itself.

your uri was = imageshack.us/photo/my-images/833/indiandefenceforum.jpg/

it should be = img833.imageshack.us/img833/2951/indiandefenceforum.jpg

Image displayed below...

MoD please upload this picture .Thank You.

:thumb:

 

[Mariner HK]

Instead of putting the uri of the imageshack page, you need to put in the uri of the image itself.

your uri was = imageshack.us/photo/my-images/833/indiandefenceforum.jpg/

it should be = img833.imageshack.us/img833/2951/indiandefenceforum.jpg

Image displayed below...

Thanks you brother

 

[Blackwater]

I highly doubt it

 

[ersakthivel]

 

[Mariner HK]

I highly doubt it

u doubt wat black water? 2015 deadline ? or ability of tejas ...?

 

[Blackwater]

u doubt wat black water? 2015 deadline ? or ability of tejas ...?

Both

 

[Mariner HK]

Both

Dude bird already flew 2000+ flights..and last prototypes as taken good shape ...Works on mass production already started...Bases to place tejas also decided... Why do u doubt ? Plz given comments with reason ...Thank u black water ...

 

[Sam2012]

Im sorry are they referring to LCA MK1 Airforce or Whole project includeing Naval LCA & Tejas MK2 ?

 

[Mariner HK]

Im sorry are they referring to LCA MK1 Airforce or Whole project includeing Naval LCA & Tejas MK2 ?

both mk1 and mk 2... tejas mk1 will be operational in few months or not more than year.. Mk2 will be flown and tested by 2015 and production in year or 2...as far as i know.

 

[Blackwater]

Dude bird already flew 2000+ flights..and last prototypes as taken good shape ...Works on mass production already started...Bases to place tejas also decided... Why do u doubt ? Plz given comments with reason ...Thank u black water ...

I will be convinced when it is officially inducted in IAF and navy, until then its all khayali polao

 

[Sam2012]

both mk1 and mk 2... tejas mk1 will be operational in few months or not more than year.. Mk2 will be flown and tested by 2015 and production in year or 2...as far as i know.

Haan ok very ambitious , if they complete before 2015 nothing like that for whole nation it will be a proud moment

But only 2years fixing issues in Naval LCA & prototype production , test flow of LCA Mk2 very difficult task , but anyways all the best ADA/HAL :thumb:

 

[ersakthivel]

Im sorry are they referring to LCA MK1 Airforce or Whole project includeing Naval LCA & Tejas MK2 ?

You have started your own thread of "Delays in DRDO projects" and threatening to dive deeper even without knowing this!!!!!

 

[ersakthivel]

Haan ok very ambitious , if they complete before 2015 nothing like that for whole nation it will be a proud moment

But only 2years fixing issues in Naval LCA & prototype production , test flow of LCA Mk2 very difficult task , but anyways all the best ADA/HAL :thumb:

It will be a proud moment , whenever it is completed. Regardless of any date for completion , a separate production line is being established for Tejas by HAl and serial production is about to start.All design teams for mk-1 are wound up and work is only on mk-2 and AMCA as per some reports.LSP-7,8 is almost the production version to be handed over to IAF.

How did you determine"test flow !!!!! of tejas mk-2 will be very difficult?"

Will it take great many men to push it off the runway?