Please note it is LITENING and not 'lightning'. That is a term reserved for DDM use only.rad wrote:would be easy to do it along with the lightning pod that could be used as a flir or an IRST combined with the DASH HMS that has been already integrated
This is the reason a page called Timeline of HAL Tejas was created on Wikibut somehow this word needs to be spread, that the LCA program only really began around 1989 with the Project Definition Phase being completed in assistance with Dassault. Before that, it was only a set of ideas that hadn’t even been put into a fully formulated plan. How people can say that the LCA program began in 1983 when even ADA did not exist then and only was set up as an Agency in 1985 is beyond my understanding.
check PM please.NRao wrote: What is your email?
great, I'd not seen it before. The timeline mentioned there seems quite accurate as it matches the dates that were mentioned in AM Rajkumar's book.KrishG wrote:This is the reason a page called Timeline of HAL Tejas was created on Wiki
A state-of-the-art facility, dedicated to manufacture of Digital Flight Control Computer (DFCC) for the Light Combat Aircraft (Tejas) at BEL’s Bangalore Complex will also come up.
DFCC is a multiple redundant (improving its reliability, one channel will take over if another fails) digital fly-by-wire flight control system of Tejas, which controls manoeuvring of the aircraft.
DFCC is a flight critical sub-system to be manufactured as per AS 9100 standards with stringent in-process and quality control processes, including environmental tests on each unit.
To meet this requirement, BEL has set up this integrated manufacturing facility for assembly, inspection and testing of DFCC, all under one roof.
The facility includes thermal cycling chamber, vibration machine, dehumidifying chambers for storing PCBs, high resolution inspection tools to identify process errors, automated test equipment for rigorous performance testing and engineering test station for testing the DFCC unit.
I am just wondering, how will the PCBs will survive on ships if they need to be stored in dehumidified chembers?sankum wrote: The facility includes thermal cycling chamber, vibration machine, dehumidifying chambers for storing PCBs, high resolution inspection tools to identify process errors, automated test equipment for rigorous performance testing and engineering test station for testing the DFCC unit.
that straight rod is called a pitot tube. and those are additional air-data probes that are placed on the pitot tube, and will be removed on production twin-seaters.putnanja wrote: In the 2nd pic of 2-seater LCA in the air, it looks like the antenna ( the straight rod protruding from the nose) has some other stuff on it, compared to the LCA 1 seater in the last pic. Anyone know why it is of that shape?
:):)http://livefist.blogspot.com/2010/01/ty ... ts-up.htmlAccording to Tenter and his team, for the Tejas to be able to take in an EJ200 engine, the engine will need "minor" modifications. These include some changing to the mounting assembly, a different hydraulic pump and an additional generator pack for starters. In addition, engine interfaces might need changes depending on how the LCA is configured. All in all, Eurojet believes its tailor-made EJ200 for the LCA can be ready -- certification tests and all -- in two years flat. Officials at the company point out that one of the biggest downers for their competition is that the F-414-400's intake interface assembly is markedly larger than the F-404 (and, thus, the LCA) and its selection would therefore imply some very serious modifications to the LCA's centre fuselage and intake architecture (in addition to the use of a cone director for airflow). Eurojet insists that the EJ200's installation will require absolutely no airframe and intake changes to the LCA. Both contentions remain unconfirmed at this point.
:):):):)rohitvats wrote:A question to the maulanas learned in the ways of jahaj-e-kuffr:
--What are the parameters involved (boradly) which require clearing to attain the IOC by the Tejas?
> opening up of flight envelope(AoA,max alt and speed etc) to the level required for operational service. it could be that IOC stops just a little lower than full design specifications and the shortfall is made up by FOC. this is normal.
> clearing the LCA airframe to its designed structural limits. in LCA's case, I think other than full AoA others have already been done.
> other than that, everything a fighter needs to operate as an interceptor and ground attack aircraft. now we do not know if LCA has fired any radar guided missiles or not but we do know
>> it has fired dogfight missiles like the R-73
>> it has dropped a number of dumb bombs of varying sizes and it has also been mated to the litening pod. that hints that it will have PGM delivery capability by IOC itself.
in terms of capabilities, at IOC it will be roughly equivalent to the mig-27, with better aerodynamics and sensors. that is, if the radar is NOT interated. if it is integrated then it will enter IAF as fully multi-role
--Similarly, what will the steps required to be cleared thence to achieve the FOC?
radar integration and validation of A2A and A2G modes. other than that fitting of IFR probe and some electronic goodies. also finishing touches to the flight envelope.
complete weapons integration.
--Timeframe for the above two steps?
from the article in vayu circa Nov, flight envelope tests for IOC was on line to be completed by december itself. IOC and induction in IAF is expected by middle of this year.
FOC, latest by 2012 end.
--And the induction into the IAF will happen post FOC?
nope, see above.
Thanx in advance.
What good is the LCA without a radar????????????Rahul M wrote:A caveat first. what constitutes IOC and FOC depends on AF. simply put, IOC is the minimum level of performance at which the aircraft can operate as an usable fighting machine for the AF.
FOC is the level at which all required performance parameters set by the AF are met, IOW it's the configuration at which the aircraft will enter regular service.
now, it is up to the AF to decide upon minimum parameters for IOC. the LCA for example will be inducted in IAF after it achieves IOC and will enter full operational service after it attains FOC. the gripen OTOH was inducted even before it achieved IOC, i.e when it was an experimental aircraft and not a fighting machine !
we can guess the IOC requirements from what we know of the tests that are being carried out now and what will be carried out in future during FOC phase, after IOC is completed by this year.rohitvats wrote:A question to the maulanas learned in the ways of jahaj-e-kuffr:
--What are the parameters involved (boradly) which require clearing to attain the IOC by the Tejas?
> opening up of flight envelope(AoA,max alt and speed etc) to the level required for operational service. it could be that IOC stops just a little lower than full design specifications and the shortfall is made up by FOC. this is normal.
> clearing the LCA airframe to its designed structural limits. in LCA's case, I think other than full AoA others have already been done.
> other than that, everything a fighter needs to operate as an interceptor and ground attack aircraft. now we do not know if LCA has fired any radar guided missiles or not but we do know
>> it has fired dogfight missiles like the R-73
>> it has dropped a number of dumb bombs of varying sizes and it has also been mated to the litening pod. that hints that it will have PGM delivery capability by IOC itself.
in terms of capabilities, at IOC it will be roughly equivalent to the mig-27, with better aerodynamics and sensors. that is, if the radar is NOT interated. if it is integrated then it will enter IAF as fully multi-role
--Similarly, what will the steps required to be cleared thence to achieve the FOC?
radar integration and validation of A2A and A2G modes. other than that fitting of IFR probe and some electronic goodies. also finishing touches to the flight envelope.
complete weapons integration.
--Timeframe for the above two steps?
from the article in vayu circa Nov, flight envelope tests for IOC was on line to be completed by december itself. IOC and induction in IAF is expected by middle of this year.
FOC, latest by 2012 end.
--And the induction into the IAF will happen post FOC?
nope, see above.
Thanx in advance.
Even Jags/Mig-27 do not have it , does that make them no good ?Willy wrote:What good is the LCA without a radar????????????
Who told you that it will not have one ???????????Willy wrote: What good is the LCA without a radar????????????
Rahul da...many thanx for the patient reply.Please indulge my queries a bit more:Rahul M wrote:........<snip>....
Why cant they mate the radar before IOC?rohitvats wrote:Rahul da...many thanx for the patient reply.Please indulge my queries a bit more:Rahul M wrote:........<snip>....
--Has there been any confirmation on the radar thing?Indian/Israel/Indo-Israel hybrid?For if i understand correctly, FOC will not be possible before every aspect of a/c is cleared & verified and it enters as a full-fledged comabt a/c. If FOC is too happen by 2012, my guess is that the radar will have to be mounted by end of this year/beginning of 2011 so that the a/c can be put through its paces. And for the radar to be mounted in the timeframe, the decision would have been taken by now?Any clues?
--by december you mean Dec 2010?And induction in mid 2011?
......
rohitvats wrote:--Has there been any confirmation on the radar thing?Indian/Israel/Indo-Israel hybrid?
rock-all boss has already answered.I can't improve on it !
For if i understand correctly, FOC will not be possible before every aspect of a/c is cleared & verified and it enters as a full-fledged comabt a/c. If FOC is too happen by 2012, my guess is that the radar will have to be mounted by end of this year/beginning of 2011 so that the a/c can be put through its paces.
radar integration was supposed to have been done long back. I would expect them to fly the radar integrated bird in the next few months itself.
And for the radar to be mounted in the timeframe, the decision would have been taken by now?Any clues?
decision has already been taken, 3-4 years back. IIRC LCA radar has been extensively tested in static A2A mode where it performed better than expected.
--by december you mean Dec 2010?And induction in mid 2011?
no sir. december 2009. the nov issue said that testing of LCA's aerodynamic envelope for IOC was well on its way to be completed by dec 2009. and induction by 2nd or 3rd quarter of this year, i.e 2010.
oh dear ! it's not "another" jag or mig-27 but something much more. please read up how home air forces induct modern fighters.Willy wrote: The article above mentioned that it would be without a radar at IOC. Another Jag or 27 the IAF needs not !!!
rakall saar, it's been sometime I have come across anything on the MMR. could you rehash the known stuff and give us a primer ?rakall wrote:The radar is Indo-Israeli hybrid.. Multiple sources from ADA confirmed (during AI09) that.. The radar will have indigenous antenna, APL, power amplifier & FRP radome.. the DSP units and software will be Israeli..
By the time of Feb09 - the radar was supposed to have been tested extensively on ground test rigs.. Dont know what has held-up integration with LSP-3 and the flight of LSP-3.. hopefully sooner than later LSP3 will fly with the Radar.. I assume the radar testing etc should not take more than a year..
AESA is targeted to be in Mk2. I doubt they will go for a complete new solution like the 2052 when the MMR has already progressed so far.Cain Marko wrote:IF the hybrid radar is NOT available or integrated on the IOC a/c, might one be bold enough to suggest that the EL-2052 rumors might have some merit? Yes, it'll still be a hybrid, only this time it'll be an AESA hybrid!
Of course, this is pure guesswork, but it seems integration of the MMR seems unduly late. Simultaneously, India has reportedly made some decent moves in ESA tech.
CM
ADA is not working day and night to give IAF another "Jag or 27" so don't worry about that. The LCA will have a radar in it and that too an AESA which at the moment has been planned for the Mk.2 variant and it's obvious that the Mk.1 will also have there radars upgraded to AESA.Willy wrote: The article above mentioned that it would be without a radar at IOC. Another Jag or 27 the IAF needs not !!!
tsriram wrote:This new rfp begs the question of what happened to the under-development aesa radar that was supposed to be under testing from the top of a building in b'lore? Did it not perform as expected? We seem to be asking for an entire radar setup in this new request.
