Broadsword quiz... level "challenging". ANSWER POSTED - Broadsword by Ajai Shukla - Strategy. Economics. Stuff.

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Tuesday, 1 March 2011

Broadsword quiz... level "challenging". ANSWER POSTED

ANSWER TO THE QUIZ IS POSTED IN THE COMMENTS. POSTED HERE IS A PHOTO OF THE LSP-2 --- WHICH WAS BUILT WITH A REINFORCED FUSELAGE --- ON THE STRUCTURAL TEST BED, SOON AFTER IT PROVED ITS ABILITY TO ABSORB 150% OF THE MAXIMUM LOAD THAT WOULD BE REQUIRED IN OPERATIONAL FLIGHT.









Well, here it is, boys and girls! No distractions here in terms of people and tables of equipment. But... what is it that you see? As always, the best answer wins.


HINT: YOU ARE ALL MISSING THE WOOD FOR THE TREES! DON'T LOOK AT THE GAUGES, DIALS AND DHAKKANS... THERE IS A BIGGER STORY IN THE PHOTO!!

FOR HEAVEN'S SAKE! THE CORRECT ANSWER IS NOT "SPIN RECOVERY PARACHUTE". NOR IS IT "REPAIR WORK AFTER THE 2007 CRASH". THINK AGAIN....



97 comments:

  1. Ajaiji, dhruv isnt reached siachin.....

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  2. Looks like the end points for data cables. Probably, to collect maintenance data about engines and other tuning of engine controls.

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  3. Inlets for hydraulic fluids....

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  4. Ananthanarayanan S1 March 2011 at 21:25

    Thats an HJT-36 Sitara Intermediate Jet Trainer

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  5. Fuel ports? I see three, so three tanks are fuelled from here.

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  6. it looks like some kind of cap to seal shut fluid container(s), maybe fuel or fluid for hydraulic components. And that 'thing' in the dark right side ... maybe somthing to release fluid loss to simulate malfunctioning

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  7. Ports for downloading the aircraft parameters information to a DTC installed in the Data Transfer Receptacle (DTR)?

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  8. The dials are hydraulic accumulator pressure dial and the emergency hydraulic accumulator pressure dial which is used for emergency situations when the main hydraulic system fails . The caps below seems to be opening for topping the hydraulic fluids and checj=king the level.

    rad

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  9. I think this is the Fuel panel

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  10. I think this is the Fuel Panel

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  11. Its the fuel tank

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  12. French Larzac replaced with a Nano Saturn?

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  13. HINT: YOU ARE ALL MISSING THE WOOD FOR THE TREES! DON'T LOOK AT THE GAUGES, DIALS AND DHAKKANS... THERE IS A BIGGER STORY IN THE PHOTO!!

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  14. IJT Sitara PT1 trainer with the new Saturn AL-55l engine

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  15. Is it the Weapons Configuration Panel for converting trainer to light strike?

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  16. I give up this quiz....u say its not about open DHAKKANS.....then what is so there in that pic to guess...only gurus with high experience can guess....But sir u r really doing wonderful job...

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  17. Safety recovery parachute ?

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  18. There are no screws on the cover plate next to the open panel.

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  19. Emergency Parachute for retrieving aircraft in case of malfunction.

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  20. Sitara which was belly landed and suffered damaged in 2009

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  21. it seems something like air intake, may be as auxilary intake!!!!

    or some arrangement to stop the aircraft spining continuosly. if my memory serves me correctly, you spotted the problem of sitara that during wind tonnel test, the aircraft was uncontrolable after spining command.

    but yah, its too challanging...

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  22. It could be data cable sockets for getting data about the trainer performance. If it is why they have it something there they need to open up every time to see it.

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  23. IJT in the pic is special for following reasons.

    (a) IJT in pic is PT-2.

    (b)It (S3466) is the same aircraft which had slipped off the runway during AI 09.

    (c)It(S3466) is the same air craft which got broken into two during structural load test.

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  24. Aircraft registration? Does it mean FOC has been accorded?

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  25. Ajai Sir, a humble request. If possible please fix a time for airing quiz, this way everybody will get equal opportunity.

    Thanks.

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  26. This is the same plane which was landed on its belly in last aero india 2009 now back in action..

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  27. CONTD.

    It is the same jet which will go for spin recovery trials scheduled within weeks.

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  28. I'm guessing this IJT trainer has additional parachutes installed to allow it to recover from an otherwise unrecoverable spin.

    Spin and high AoA testing will need to conclude before the aircraft gets its IOC this year.

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  29. I believe in the IJT the system is called Anti-Spin Parachute System (ASPS). An unrecoverable spin typically occurs at a high angle of attack when the aircraft stalls and begins to plummet while rotating about the vertical axis. The parachute deploys towards the rear and allows the aircraft to move its centre of gravity forward (it pitches the nose of the aircraft down).

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  30. What we are seeing in the picture is the relatively simple construction techniques employed by HAL in building the IJT-36 -- the panels are held together with easily available kitchen cupboard screws!

    It is this simplicity which allows HAL pilots and engineers to repeatedly crash and break this plane and still allows the plane to keep coming back and fly. Jai Ho!

    I.A.Munique

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  31. this HAL IJT 36 crashed during the preparation for aero india 09 & it looks like that HAL has rebuild it...good job HAL...

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  32. 1. IJT S3466 is the first plane to have shed the traditional blue color scheme for a more vibrant Orange one.

    2. I am positive it has gone some additional feature upgrades, and this is a first test run for that. I can hazard a guess that the panel just infront of the air intake has been opened so that more air flows into it. Which implies, its very much possible the engines are upgraded/replaced. Yes, wiki confirms that it has not been flown since Aero 2007 mishap. Saturn came in in 2008. Hence, the first trial run with AL-55L engine.

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  33. Strakes have been added to the nose and tail of S3466, similar to the Sitara LSPs, for added spin/high AoA stability. S3466 will shortly return to flight testing and possiby weaponisation.

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  34. gettinf ready for they navy. looks like arrestor..

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  35. Question is what is S3466.

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  36. I guess I will go with Rahul..

    2 March 2011 14:06

    Ofcourse no points :) but the understanding yes.

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  37. Just a wild guess, It has something to do with anti-spin parachute system (ASPS)

    Anil, mumbai

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  38. S3466 is the same aircraft that flew in AI 2011.
    guess 1. The parachute recovery system is on board.

    guess 2. The aircraft is being readied for the spin recovery tests.

    guess 3: The aircraft is modified to have extra air brakes.

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  39. missing screws!

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  40. This aircraft PT1 sitara has got strakes and spin recovery parachute.This is being readied for carrying out spin recovery tests in due course of time as part of obtaining initial operational clearance(IOC)!!!!

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  41. FOR HEAVEN'S SAKE! THE CORRECT ANSWER IS NOT "SPIN RECOVERY PARACHUTE". NOR IS IT "REPAIR WORK AFTER THE 2007 CRASH". THINK AGAIN....

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  42. It is pressure gadge. one is Break and other look emergency pressure gadge. May be Hydrolic pressure or air pressure input? May be used for zero eject seat?

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  43. Poor build quality. The rivetting does'nt even lin up. Probably because its been patched up after its aborted take-off at AI07. The small intake left of the open panel suggests an air intake to cool some kind og electronics/avionics. Its too small for engine cooling.

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  44. Looks like they have added another hydraulic accumulator for emergency requirement. The ports could be hydraulic charging point/connector for ground hydraulic trolly.


    Shail

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  45. Looks like HAL has added another emergency hydarulic accumulator for brakes. The ports could be ground hydarulic charging points.

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  46. If the answer is not related to history(about which i already posted) ) of IJT serial number S3466, then i'am seeing mentioned as following(all):-

    1. ATF inlet/outlet.
    2. Oxygen cylinder refill socket.
    3. Half funnel shaped vortex generator.

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  47. It could be a completely new prototype aircarft. May be you want us to notice its serial no.

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  48. This seems like there is no hatch to the fuel ports.

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  49. This aircraft has independent redundant hydraulic systems.

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  50. Is it the small fins added to Sitara? I donno what is the exact term for that

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  51. Is it that the body of IJT is made of ALUMINIUM and not composites...

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  52. is this going to be part of Suryakiran team

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  53. My observations:

    1. There is a screwed-on access panel instead of a easy access panel.

    2. Also the panel frame is 'ground off' to allow space for the covers.

    Poor design for such an elegant aircraft.

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  54. Its probably Al 551 engine's turbine pressure measurement unit or something...Its really a hard guess..

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  55. Though our answers might not be upto your expectations Mr.Shukla(I dont think many aeronautical Engineers commenting out here), But its a good learning oportunity for most of us and I thank you for that.

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  56. The aircraft is the same as the one display here, albeit with a different colour scheme:

    http://goo.gl/b4v8F

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  57. Well this was the first IJT prototype. and now it seems that it is upto the SP levels (strakes et al).

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  58. Is this a mechanism to control the output of the engine so that the trainer could be used to fly/train at different speeds?

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  59. At the bottom of this panel, the body contour is abrupt and not smooth. Hence it is not so much aerodynamic.

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  60. Prototype for mid-air refueling. Either it is for training or testing.

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  61. the body panel or cover is missing-dhakan in hindi.

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  62. Is the IJT using the sunlight to overcome the cold soak after a flight?

    Indranil Roy

    P.S.
    to poster at 2 March 2011 20:34: Please know the difference between rivets and screws before commenting on build quality ... There are no rivets ... Screws are used on the panels like these which require frequent access.

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  63. S3466 is the first prototype IJT and changed from 'blue' paint scheme to the current Orange paint scheme.

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  64. I see a wing fence which is not present on any of the other IJTs.

    Given the position of the wing fence (just before the aeliron and also covering the leading edge) I can say that they are (most probably) stall fences. I won't lower the stall speed (by much), but it will help in not letting the whole wing to stall at once. Also control would be retained through the aelirons once the plane has stalled.

    This will be very handy when this IJT goes through spin tests.

    Indranil Roy

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  65. This is simple - the aircraft is being considered for a naval carrier capable version.

    Cujo - strikes again !

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  66. hydrolic for landing gear?
    and it pressure gadge?

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  67. This A C should be replase kiran MK 2 in S k airobatic team

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  68. Post the capability of tejas mk1.please

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  69. It resembles the hawk AJT?!

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  70. the landing gear seems to be somewhat changed...

    apart from that the riveting or the screw holes are not aligned and half the screws/rivets are missing..

    shoddy work it seems..

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  71. This is a naval version as latch is visible for ship landing.

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  72. Countermeasures dispensing unit!!

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  73. first of all if one compares the same aircraft here -

    http://www.acig.org/artman/uploads/sitara-pt1.jpg

    the STRAKES both at the front just ahead of the cockpit and on the tail fin is what stikes me.

    guru.

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  74. Is this the production version of the IJT with the Saturn engine (instead of the Snecma one used on the prototype)?

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  75. thats the chain brake to stop the aircraft, like the one we use in train? hehe. i really dont know wats tat, just waiting eagerly to answer :)

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  76. So Far there are only 2 IJTs and this ones just a one o them which keeps on getting repainted and shown again and again...SO HAL has been able to manufacture only 2 prototypes!!!!!!!!!

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  77. may be stupid but is it some way to train mid air refueling

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  78. Couple of guesses:
    1. Is there something different in the building of this airframe from traditional methods?

    2. Is it that more LRUs and diagnostic tools are built in for ease of maintenance?

    3. Different type of paint/coating on the aircraft?

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  79. Then wats the answer:)

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  80. I believe it has an arrester cable for practising deck landings.

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  81. on-board oxygen generating system (OBOGS)'s drain valve assembly ? maybe? :)

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  82. On-Board Oxygen Generating System (OBOGS)'s drain valve assembly? :)

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  83. Sir,
    Thats water filtering system in case pilot feels thirsty.if u luk closely there are two dials and 2 nozzles.One for cold water and the other one for hot water.Also the temp variation is achieved by AI.If u luk at screws they are not what they really luk.They are infrared sensors so that no one steals water from it.
    Am i rite??I think so.

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  84. It looks like Amphenol Fiber Optic TFOCA Connectors with Dust Cap and chain. The 4 FO ports in the picture could be used for data link or to connect BITE (Built In Test Equipment)

    NRP

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  85. is this related to fuel tanks?

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  86. Plateform for weapon trials?

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  87. THIS WAS CLEARLY MORE CHALLENGING THAN ANY PREVIOUS QUIZ.

    THE CORRECT ANSWER: THE SCREWED ON PLATE THAT YOU SEE... ON WHICH THE NUMBERS "46" ARE PAINTED... IS THE REINFORCEMENT THAT HAS BEEN PROVIDED TO THE IJT SITARA'S FUSELAGE AFTER IT CRACKED DOWN THE MIDDLE DURING THE "SYMMETRICAL MANOEUVRE" STRUCTURAL TEST AT HAL.

    AFTER THE REINFORCEMENT, THE SITARA PASSED THE SYMMETRICAL MANOEUVRE STRUCTURAL TEST IN JANUARY 2011. THE IJT IS NOW CLEARED FOR 7G FLIGHT MANOEUVRES.

    I HAVE ALSO POSTED A PHOTO OF THE LSP-2 --- WHICH WAS BUILT WITH A REINFORCED FUSELAGE --- ON THE STRUCTURAL TEST BED, SOON AFTER IT PROVED ITS ABILITY TO ABSORB 150% OF THE MAXIMUM LOAD THAT WOULD BE REQUIRED IN OPERATIONAL FLIGHT.

    NO GOLD STARS FOR ANYONE THIS TIME... SORRY!

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  88. Ajai sir, if possible, please share with us some details on PV-1 EW upgrade.

    Thanks!

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  89. interesting answer, however, it was pretty much impossible to figure it out looking at the photographs given as clues.

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  90. patchwork takes care of serious design flaw ?

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  91. how can a simple metal plate provide strength to a compromised design ? Will the lsp-2 also have this plate ? Think of brand new levis jeans with ugly patchwork.

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  92. Shouldn't the structural integrity test be done prior to flying?!!

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  93. (A)"karachiwala said...
    patchwork takes care of serious design flaw ?

    5 March 2011 14:18"

    (B)"Anonymous said...
    how can a simple metal plate provide strength to a compromised design ? Will the lsp-2 also have this plate ? Think of brand new levis jeans with ugly patchwork.

    5 March 2011 16:11"

    Elementary my dear Watsons, you see when this fuselage might have been subjected to the severe stresses, it might have been noticed that cracks/tears started from this particular location. So what do you do? Well, strenghthen that particular point from where the weakeness begins and you take care of the problem very effectively and very cheaply. Jolly good show eh? I'll have my tea now, thank you!

    I.A.Munique

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  94. Dont waste your time trying to explain sane things to karchiwalas !!! He might have taken timeout from his bakery inn!!!

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