Key.Aero Network
Register Free

Page 3 of 66 FirstFirst 12345671353 ... LastLast
Results 61 to 90 of 1970

Thread: Tejas Mk1 and Mk2 thread

  1. #61
    Join Date
    Apr 2011
    Posts
    1,819
    Some more pictures from winter trials at Leh.
    http://gallery.tejas.gov.in/Gallery/...4719&k=KjGRdKG
    Tejas operating from Leh in the winter of 2013, altitude 3,500 m (11,500 ft). The temperature was often down to -15 degree Celsius at night and the day temperature rarely exceeded 0 degree Celsius. The views are spectacular, Leh is the highest commercial airport in the world.












  2. #62
    Join Date
    Apr 2011
    Posts
    1,819
    Never mind, post deleted.

  3. #63
    Join Date
    Apr 2011
    Posts
    1,819
    Just saw the live webcasts on Tejas prgram by Air Cmde KA Muthana, Project Director (Flight Test), NFTC, ADA and Mr Shyam Chetty, Director, NAL, CSIR .

    Cmde Muthana had a half hour diatribe over the way program was run but praised the final product.

    Mr Shyam Chetty revealed an interesting tidbit about Naval Tejas, it will feature an automatic 'Hands Free' take off feature for STOBAR operations. Testing of automatic take off will start soon at INS Hansa, Goa.

  4. #64
    Join Date
    Oct 2003
    Posts
    5,713
    Any recordings of the webcast on Tejas program ? where can i find the webcast link
    "A map does you no good if you don't know where you are"

  5. #65
    Join Date
    Apr 2011
    Posts
    1,819
    Quote Originally Posted by Austin View Post
    Any recordings of the webcast on Tejas program ? where can i find the webcast link
    I did not record that particular webcast. However you can search for it the future by its title "Certifiable Control Laws for High Performance FBW Aircraft" by Mr Shyam Chetty.

    The paper by Air Cmde Muthana is available in full here :-
    http://aeroindiaseminar.in/admin/tec...anna_paper.pdf

  6. #66
    Join Date
    Oct 2003
    Posts
    5,713
    Thanks , Another nice paper on Akash

    A Nice paper on Akash SAM program from AeroIndia 2013

    Challenges in design, development, system integration, testing, evaluation and production of Surface to Air Tactical Missile system Akash
    "A map does you no good if you don't know where you are"

  7. #67
    Join Date
    Apr 2011
    Posts
    1,819
    EW Suite for Tejas:-


    Python-5 and Derby for Tejas


    ..and Astra too. Notice the change in design of Astra. The mock up of Tejas is still carrying the old mock up of Astra.

  8. #68
    Join Date
    Apr 2011
    Posts
    1,819
    LSP-4 flying over Yelahanka.

  9. #69
    Join Date
    Oct 2003
    Location
    U.S.A
    Posts
    329
    Could one of you visiting AI2013 get details on Tejas Mark II specs? I am particularly interested in its increased length, weight, payload and range. Pictures of models, brochures would be great.

    Thanks a lot.
    MTFBWY

  10. #70
    Join Date
    Apr 2011
    Posts
    1,819
    Quote Originally Posted by lordofjedi View Post
    Could one of you visiting AI2013 get details on Tejas Mark II specs? I am particularly interested in its increased length, weight, payload and range. Pictures of models, brochures would be great.

    Thanks a lot.
    I haven't come across any posts on Tejas exhibits about Mk 2 on any of the forums.

    Edit: Found one. The poster on the right in the background for mk.2 says 13.7 m. That poster is pretty much the old Bruchure from last AI.
    Last edited by Twinblade; 8th February 2013 at 06:00.

  11. #71
    Join Date
    Apr 2011
    Posts
    1,819








  12. #72
    Join Date
    Feb 2013
    Posts
    78
    Quote Originally Posted by Twinblade View Post
    I haven't come across any posts on Tejas exhibits about Mk 2 on any of the forums.

    Edit: Found one. The poster on the right in the background for mk.2 says 13.7 m. That poster is pretty much the old Bruchure from last AI.
    i see almost no change from mk1 to 2

  13. #73
    Join Date
    Mar 2008
    Posts
    922
    Quote Originally Posted by Twinblade View Post
    Some more pictures from winter trials at Leh.
    http://gallery.tejas.gov.in/Gallery/...4719&k=KjGRdKG












    Sorry for quoting the whole post, but what a cute baby-Mirage..!

  14. #74
    Join Date
    Apr 2011
    Posts
    1,819
    Quote Originally Posted by zhengpao33 View Post
    i see almost no change from mk1 to 2
    Yeah, barring half meter increase in length, not much change.

  15. #75
    Join Date
    Apr 2011
    Posts
    1,819

  16. #76
    Join Date
    Oct 2010
    Location
    Australia
    Posts
    3,449
    Quote Originally Posted by Twinblade View Post
    Yeah, barring half meter increase in length, not much change.
    Might make all the difference aesthetically. The model linked above is markedly easier on my eyes than the chunky and lumpy Mk. 1.

    For Mk. 3 will have to do something about those intakes.

  17. #77
    Join Date
    Aug 2006
    Posts
    4,835
    I'm curious why HAL used the gap between the fuselage and intakes like on the Hornet.
    Go Huskers!

  18. #78
    Join Date
    Jun 2011
    Location
    Australia
    Posts
    404
    Quote Originally Posted by Rii View Post
    Might make all the difference aesthetically. The model linked above is markedly easier on my eyes than the chunky and lumpy Mk. 1.

    For Mk. 3 will have to do something about those intakes.
    Plz, not you too for DSI.



    ----

    MadRat, thats a quite a common design feature. Its for boundary layer air separation.





    Same thing for F-22 intake (front intake pic quite large, so i havent made it an in-line image) :
    http://0.tqn.com/d/chicago/1/0/J/D/-...RaptorZoom.JPG

    Also, LCA design is by ADA, not HAL.

  19. #79
    Join Date
    Apr 2011
    Posts
    1,819
    Some more mugs.





  20. #80
    Join Date
    Oct 2010
    Posts
    450
    Quote Originally Posted by Twinblade View Post
    Simple question now. Will Tejas especially the Mk2 in the end will replace Mig-21 in the Inventory on one on one basis (as the original Plan). When reading about Tejas on several forum and Media, sometime I just wander why so much negativity targeted on Tejas. This is Plan to replace Mig-21, and as the photograph can show, It can do well to replace Mig-21.

    Why so much goal being burdened to Tejas ? when the original plan is to replace Mig-21, which I do believe this Little Fighter can do well on that.
    Last edited by ananda; 11th February 2013 at 06:29.

  21. #81
    Join Date
    Oct 2010
    Location
    Australia
    Posts
    3,449
    Quote Originally Posted by killerbean View Post
    Plz, not you too for DSI.

    I meant shaping for LO as in Hornet > Super Hornet.

  22. #82
    Join Date
    Jun 2011
    Location
    Australia
    Posts
    404
    Ah, yes. That would be a nice addition indeed.

  23. #83
    Join Date
    Dec 1999
    Location
    Germany
    Posts
    4,011
    Quote Originally Posted by Rii View Post
    I meant shaping for LO as in Hornet > Super Hornet.
    YES, that would be a nice addition !

    Besides that any news from LSP-8 ??
    ...

    He was my North, my South, my East and West,
    My working week and my Sunday rest,
    My noon, my midnight, my talk, my song;
    I thought that love would last forever; I was wrong.

    The stars are not wanted now; put out every one:
    Pack up the moon and dismantle the sun;
    Pour away the ocean and sweep up the woods:
    For nothing now can ever come to any good.
    -------------------------------------------------
    W.H.Auden (1945)

  24. #84
    Join Date
    May 2009
    Posts
    2,246
    Quote Originally Posted by Rii View Post
    I meant shaping for LO as in Hornet > Super Hornet.
    Unlikely to modify the intakes in MK2. They are in anyway y shaped and mask the fans. Plus it already has a low RCS, with the hotspots treated with RAM per public reports, and now there is a comprehensive internal SPJ fit in the MK2 variant.
    A MK3 variant designed for further LO has been mentioned, but depends on whether IAF wants that or chooses the AMCA.

  25. #85
    Join Date
    Apr 2011
    Posts
    1,819
    And here's a picture that suites the name Tejas (one with a Halo/corona, aka a star)

  26. #86
    Join Date
    Oct 2003
    Location
    U.S.A
    Posts
    329
    A fantastic post by Kartik at BRF on Tejas from AeroIndia 2013; fortunate to have such posters in our midst. I am not sure if he has a login here - I do not want to be presumptuous in case he wants to post it himself. So, I am just giving the link:

    http://forums.bharat-rakshak.com/vie...384&start=1920

    Scroll to about half the page down (post time & date: 11 Feb 2013 15:58)

    Thanks Kartik for these wonderful posts. If you have a handle in Keypubs, please post these in full here as well.
    MTFBWY

  27. #87
    Join Date
    May 2009
    Posts
    2,246
    As I was mentioning earlier, LCA MK2 avionics have been upgraded even further, above & beyond those of MK1 FOC std which are of a level above those currently on the MKI itself.



    A larger version of the above does not allow for hotlinking, so in text:

    Key Features:
    MK-I:
    1. Glass Cockpit
    2. Dual Redundant Open Architecture Mission and Display Computer
    3. Dual Redundant 1553B data bus
    4. Advanced sensors, MMR, Helmet mounted sight , RWR and Litening pod.
    5. Digital weapon management system comparable to russian western and etc.
    6. Computer controlled utility system and management system.
    7. Pylon interface boxes (PIB's)
    8. Easy role change

    MK-II:
    1.Advanced glass cockpit with high performance graphics to support situational awareness, Decision Support and data fusion
    2. Enhanced Powerful Graphics integrated with mission and display computer
    3. Avionics Full-duple X-Switched Ethernet (AFDX) based back up avionics
    4. Enhanced EW Suite and NextGen Litening pod
    5. AESA Radar

    6. System on Chip (SoC) based design.
    7. Universal Pylon Interface Computer (UPIC)
    8. Digital Maps
    9. Enhanced SWAP (Size, Wieght and Power)
    Digital Maps were even there on MK1 via the DMG module on the Open Arch Computer, seems those are replaced with an IMA (new Integrated Modular Arch computer same as those for the Super 30 upgrade?).

    Key points though - data fusion (a big plus!) not to mention the AESA radar (looks like either development or sourcing is now certain enough to include it) plus the afore linked EW suite (with jammer).

  28. #88
    Join Date
    May 2009
    Posts
    2,246
    This new system (3. Avionics Full-duple X-Switched Ethernet (AFDX) based back up avionics) is nothing but a reference to the protocol being used to implement a brand new avionics architecture.

    Namely Integrated Modular Avionics. IMA's most famous examples today are the JSF & F-22 with their CIPs, which take it to an extreme. The LCA approach is more conservative but still the same concept.

    1. Original Plan
    In the case of the LCA, they won't be taking away the entire processing from each of the sensors & putting it back into the IMA CPU boxes, but clearly this is a significant step up from both the OAC (Open Architecture Computer) which in turn replaced the earlier federated Mission Computer+Display Computer+ Display Map Generator+ Video Switching Unit functions which all had a discrete LRU.

    That approach was used on the Su-30 MKI with systems adopted from the LCA. A writeup can be found here.
    http://www.bharat-rakshak.com/IAF/Ai...Vetrivale.html

    2. OAC
    Thereafter, when the LCA entered extensive test flights, the IAF asked for a further upgrade. DARE (DRDO;s avionics lab) designed the Open Architecture Computer, a single system which combined all the functions of the four LRUs above (MC, DP, DMG, VSU) into a single system, still leveraging the 1553B protocol. It also used newer Power PC processors as versus the earlier Intel ones on the separate units.

    The OAC is the Bus controller for the three main buses(1553B) of the avionics architecture. All the operational functions like Navigation, Air-to-Air, Air-to-Ground & Air-to-Sea , integrated maintenance functions, display functions related to the MFDs, HUD and HMD, plus the management functions (warning management etc are performed by the OAC).

    http://www.tejas.gov.in/technology/o..._avionics.html
    Shows the OAC test rig when it was opened up (hence the puja ceremony, flowers, lamps etc)
    http://www.pinaka.co.in/TestRigs.aspx

    This is the same standard as on the LCA MK-1 & the LSP, and is actually ahead of what is on the Su30 MKI & DARIN-1 Jaguar plus MiG-27 Upgrades.

    3. IMA
    Now, with LCA MK-2, DARE is implementing a new IMA (as mentioned above) with even more powerful performance, and capable of data fusion plus additional pilot aids!!

    The LCA MK-2 also comes with a more sophisticated RWJ suite (with an integrated jammer), which will free up the 8th pylon & will also feed into the new IMA computers.

    The IMA concept will also be used for the Super 30 upgrade and a test facility has been setup at DARE.

    See: http://aeroindiaseminar.in/index.php...tail?value=108

    Net, as I posted before, the LCA team has constantly upgraded the systems & these are now being used across IAF programs.

    4. Among the key systems that were procured off the shelf for the LCA program were its MFDs, its RLG-INS system. These two are now also going to be replaced on the MK-2 would be my estimate.

    RLG-INS production has now stabilized at a point where it can be ramped up & MFDs are now available locally via a company called SAMTEL which has made itself into DARE/HALs preferred partner in that arena.

    5. Overall, LCA avionics are going to be very current when it enters service, both in the MK-1 and MK-2 variants. Latest news from Aero India is that LRDE (the radar developers) are still confident they can meet the LCA timelines for a local AESA radar, and even several other manufacturers are competing to supply one if India looks for that option, with the ELTA's 2052 back in the fray.

  29. #89
    Join Date
    May 2009
    Posts
    2,246
    A good read on current developments:
    http://www.frontlineonnet.com/storie...2300304000.htm

    The DFCC is going to be the next upgrade. A couple of years back, the other items such as the Air data computer & other LRUs were upgraded.

    Plus, there is a tender now out to indigenize around 112 LRUs many of which are already being supplied by SMEs to other aircraft programs in India.

    Clearly, the program has now reached a stage where a near final BOM can be generated & hence vendors brought in to indigenize the LRUs on a commercial requirement, otherwise it was a wasted effort for them without a significant production run.

    Interesting part is that leaving the engine out of the equation, 50% of the Tejas LRUs are already sourced locally.

    The program is well on track to meet a pretty high indigenous content, ironically accelerated thanks to sanctions, as otherwise the initial approach was to only focus on high cost/high value added items alone.

    The good part about taking the hard route with the LCA is that many of these systems can then be evolved into the MCA program.

    Another import item from Aero India is that Astra is finally in a shape to begin its long awaited flight trials this year. Having gone through a significant redesign. As the LCA MK-1s get ready, they will have a local A2A BVR weapon & local PGMs (the Sudarshan family) as well.

    HAL has also now (finally) committed to increasing its LCA output to 16/year from the current 8. They are raising three dedicated production facilities/hangers for this.

    If there is anything that should be obvious by now, it should be clear that the IAF & the developers are in the long haul with this program and its acting as the test bed for pretty much anything & everything.

    The Kaveri is now the one aspect of the tech generation program linked to the Tejas which is to be seen through with a proper roadmap.

    Incidentally, HAL has committed to increasing its outsourcing from local industry, which means a lot of the Su-30 MKI TOT is flowing down to local vendors who in turn supply to HAL.

  30. #90
    Join Date
    Oct 2010
    Location
    Australia
    Posts
    3,449
    Quote Originally Posted by ananda View Post
    Simple question now. Will Tejas especially the Mk2 in the end will replace Mig-21 in the Inventory on one on one basis (as the original Plan). When reading about Tejas on several forum and Media, sometime I just wander why so much negativity targeted on Tejas. This is Plan to replace Mig-21, and as the photograph can show, It can do well to replace Mig-21.

    Why so much goal being burdened to Tejas ? when the original plan is to replace Mig-21, which I do believe this Little Fighter can do well on that.
    Tejas will replace MiG-21 in IAF orbat (and probably Jaguar in the end too) but not 1:1. The world has changed in the decades since Tejas began and India with it. Everyone is moving to heavier platforms and UCAVs filling in from the bottom.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

- Part of the    Network -

KEY AERO AVIATION NEWS

MAGAZINES

AVIATION FORUM

SHOP

 

WEBSITES