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PostPosted: 13 Jun 2012 02:12 
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This sounds like a first wave craft. two bombs for very high value and well-defended targets is pretty good. The key is to build this in large numbers. Keeping cost under control, like khan does for its Sentinel series is vital.

I would love to see an IED mubarak at Muridke being hosed down by pakis in CNN, while an IAF technician paints a mission icon on this baby.... totally unrelated events with H&D intact 8)


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PostPosted: 13 Jun 2012 05:17 
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Can anyone ID the LGB shown in the CAD images? Since they're using it for design studies of clearance and fit, these must be in the IAF's inventory. Sudarshan or Israeli Griffin?


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PostPosted: 13 Jun 2012 06:18 
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^^^ New bie question ... Will they cut it that close? ... I think they would incorporate enough tolerance in the design so that either can be fit ... After all these would be flying 30 years into the future ... The LGBs would evolve over this period too.


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PostPosted: 13 Jun 2012 06:24 
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Location: havildar-major, 1st JSOC munna detachment.
the length & volume of the bay is also important. bunker busters tend to be long and slim. the blast effect / submunition types tend to be teardrop shaped like those JDAMs I posted in B1 bomb bay.


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PostPosted: 13 Jun 2012 06:39 
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Multiple SDB bombs can be carried upto 8 nos. Cant say about AAM, highly unlikely.


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PostPosted: 13 Jun 2012 07:24 
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Location: havildar-major, 1st JSOC munna detachment.
we are some distance off from UCAVs taking on air combat roles. everyone has first focus on deep strike.

there is also small matter of us not having SDB and Khan is unlikely to support any project or technology that gives us element of surprise to hurt his munna, so its has to be done from ground up by the sudarshan developers.

wrt to the engine we cannot depend on american engines for this, has to be either the kaveri-snecma JV or the M88-3 for quicker induction and test cycles.


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PostPosted: 13 Jun 2012 09:33 
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Major Issues of Immediate Concern for the Indian Air Force


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PostPosted: 13 Jun 2012 10:44 
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UCAVs absolutely MUST fly on an indigenous engine.


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PostPosted: 13 Jun 2012 10:53 
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Location: havildar-major, 1st JSOC munna detachment.
being subsonic even a reliable kaveri with decent fuel economy will suffice. IAF might be more willing to take a risk with unmanned bird.


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PostPosted: 13 Jun 2012 11:01 
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Not sure if the UCAV is designed around Kaveri , it looks smaller to me around 2-3 T , what is the Take Off Weight of this UCAV ?


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PostPosted: 13 Jun 2012 11:38 
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^^^ It is. DRDO gave a young scientist award regarding this.

link

Quote:
Shri Vikram Singh, Scientist ‘B’, Aeronautical Development Agency (ADA), Bengaluru, has made valuable contribution in design of a controllable flying wing UCAV configuration for KAVERI Engine. In recognition of his significant contribution, the Young Scientist Award 2011 is conferred on Shri Vikram Singh.


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PostPosted: 13 Jun 2012 11:56 
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MTOW of 10T with 2T internal weapon load and 3T internal fuel for long range and non afterburning version of Kaveri with 5T thrust can be expected.

5T can be the empty weight with kaveri engine weighing 1T.


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PostPosted: 13 Jun 2012 12:16 
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MTOW is about 15 Tons.


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PostPosted: 13 Jun 2012 12:16 
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^^^ Thanks , that should confirm that Kaveri would be put to use in not in LCA then in UCAV.

Any dates on when this UCAV would fly or any prospective program schedule for it ?


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PostPosted: 13 Jun 2012 13:09 
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India Explores Low-Observable Aircraft Technologies


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PostPosted: 13 Jun 2012 20:31 
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Could someone kindly answer my question posed 3 days ago on the importance of formation flight in a military context in the Newbie thread?

For example, does the ability to fly close improve the likelihood of being perceived as one target instead of multiple targets with modern radars?

Are there other benefits like saving fuel?


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PostPosted: 13 Jun 2012 20:34 
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the main reason for formation flying was from the early days - navigation, ensuring that everyone reached the target together. and then in a formation, you are better able to watch each other's backs or 6's. an inverted v formation allows trailing planes to benefit from the vortices of the leading plane and reduce its drag (and fuel). the leader drives the formation whilst the others keep watch. the finger four formation has evolved as the optimum for fighter sweeps, whilst bombers (in the old days) had other more protective formations). nowadays, strike packages go in in quite different configurations, so pairs are more normal than fours and mores. however the flying discipline and piloting skills of formation flying are good to have anyway


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PostPosted: 13 Jun 2012 20:44 
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indranilroy wrote:
MTOW is about 15 Tons.


Cool. Where did we this piece of data from ?


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PostPosted: 13 Jun 2012 22:25 
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PratikDas wrote:
Could someone kindly answer my question posed 3 days ago on the importance of formation flight in a military context in the Newbie thread?

For example, does the ability to fly close improve the likelihood of being perceived as one target instead of multiple targets with modern radars?

Are there other benefits like saving fuel?


Please see the newbie thread


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PostPosted: 13 Jun 2012 22:55 
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Cybaru wrote:
indranilroy wrote:
MTOW is about 15 Tons.


Cool. Where did we this piece of data from ?

Dr. Prahlada said so. There are a few news articles. Here's one.

Quote:
Capable of flying at altitudes of 30,000 feet and weighing less than 15 tonnes, the UCAVs will have rail-launching for the missiles, bombs and PGMs (precision-guided munitions) they will carry.


Also first flight is scheduled for 2015. link.
Quote:
While the first flight is expected to take place in 2015, the targeted year of induction 2017.

Very ambitious, I must say.

P.S. SometI am guessing that the armament ... At that weight range, we are speaking of one of the biggest UCAVs. It will be as big as a Boeing Phantom and bigger than the Mig SKAT, Taranis, Neuron. At that size, it should be able to carry atleast 2 Tons of ammunition. Also, that number sits right with a Kaveri class engine. I wish that the weapons bays are designed in a way, so that IUSAV can carry standoff range air to ground missiles for SEAD, antiship roles. At 1000 kgs each, such missiles can have serious standoff range, making IUSAV to become a SERIOUS threat.


Last edited by indranilroy on 13 Jun 2012 23:49, edited 1 time in total.

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PostPosted: 13 Jun 2012 23:01 
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BRFite -Trainee

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LCH ZP4602

Hot off the internets...


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PostPosted: 14 Jun 2012 01:00 
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BRFite

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Dennis wrote:
LCH ZP4602

Hot off the internets...


Wow!


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PostPosted: 14 Jun 2012 02:15 
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BRFite

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Still cant get over the optical pod placement and shape of nose. looks hideous. but hey, if it gets the job done...


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PostPosted: 14 Jun 2012 02:25 
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interesting camo, used anywhere else?


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PostPosted: 14 Jun 2012 05:30 
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We can finally see the new / re-designed wing.

I wonder if it will enhance LCH's range.


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PostPosted: 14 Jun 2012 06:55 
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Location: havildar-major, 1st JSOC munna detachment.
AURA looks very similar to Neuron. the EADS Barracuda under test now is more conventional with a V tail and a round exhaust. http://www.youtube.com/watch?v=7UUq3bU0Etc

about the LCH....wow that camo sure looks like a chameleon under right conditions. I am sure they will develop a desert fox and snow falcon camo as well


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PostPosted: 14 Jun 2012 19:57 
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indranilroy wrote:
I was reading comments section on a Livefist (Shiv Aroor's blog) post and one of the comments there provided a link to HAL's tender for the engine for HTT-40 and the ECU of the APU for AMCA (which is now called Prospective Multirole Fighter Aircraft; PMF)

link.

One could find the actual tender here.

P.S. As I read the cover letter, I find the following schedule for providing the development engines (T1 is date of signing contract):
ITEM Quantity Required Delivery Date
Mockup Engine 2 T1+12 Months (2 nos)
Flight qualified fully 3 T1+24 Months (2 nos),
Instrumented Engines T1+27 Months (1 no)
Flight qualified Engines 1 T1+30 Months (1 no)

The tender closing date is Sept'12. If the contract is signed in the first half of 2013, don't expect maiden flight before second or third quarter of 2015. :(

Design studies commenced in Jan 2012 (T0).

The order is for 124 (16 direct + 16 SKD + 32 CKD + 60 lic. produced.) + 300 (additional estimated order over 10 years). 8)

They are going to deliver these planes over 8 years starting from Jan 2017.

about the plane:
Weight: 2800 - 3000 kgs.
Power >750 KW at sea level
Max. Mach no. : 0.5 Mach
Max altitude: 6 km
Load envelop: -3 G to 6 G


Why don't they go in for Garret which they are already making?


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PostPosted: 14 Jun 2012 22:25 
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Underpowered... they want >750 KW, the Garretts produce around 533 KW.

P.S. But, I can't help ask this. They have been producing these engines for decades now. Where is the learning part? Can't they build a bigger engine by themselves now? Let people run wild for one day a week. Let the creative juices flow. My personal opinion is that people would be much motivated for the rest of the 4 days of mundane job.


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PostPosted: 15 Jun 2012 09:03 
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There are many versions of basic Garrett. The market is controlled by Garett and PT6. The technology is around 40-50 years old. We have been manufacturing garret for almost 30 years now. As per the tender, the indigenous manufacture of imported engine will start after 10 years. Why? Do we word our requirements in this manner? Hal will come out with loud announcement to say, as to how, they are great and there is no need to manufacture every component in India. I think Tatra philosophy is ingrained deep into India. We need huge no. Of turboprop engines for Saras, HTT-40, adv Rustom i.e. around 400-500 engines or so.


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PostPosted: 19 Jun 2012 21:06 
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as per VAYU's latest issue, as of 12th march, the following AN 32RE's have been delevered to IAF -

1st batch of four - K2676, K2670, K2681, K2696 (JUNE 2011)

2nd batch of five - K2689, K2704, K2707, K2708, K2719 (19th SEPT 2011)

3rd batch of five - K2677, K2680, K2715, K2720, K2735 (12th MARCH).

...................

a fourth batch comprising - K2668, K2682, K2692, K2734 plus one have arrived in Zhulyany on 11th dec 2011 for the upgrade.

...................

40 to be upgraded in Ukraine. 65 at No. 1 base repair depot AFS Chakeri/Kanpur.


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PostPosted: 19 Jun 2012 21:14 
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thanks a lot pragnya.


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PostPosted: 19 Jun 2012 21:45 
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indranilroy wrote:
Underpowered... they want >750 KW, the Garretts produce around 533 KW.

P.S. But, I can't help ask this. They have been producing these engines for decades now. Where is the learning part? Can't they build a bigger engine by themselves now? Let people run wild for one day a week. Let the creative juices flow. My personal opinion is that people would be much motivated for the rest of the 4 days of mundane job.


Yeah, its way below what they want for the HTT-40. HAL's page states that it produces 715 shp whereas HAL wants nearly 945 shp for the HTT-40.

The engine specs are such that a Canadian P&W PT-6A variant will be a very likely candidate. On the PC-7 MkII, they use a PT-6A-25C turboprop engine that gives a max output of 700 shp, but on the PC-9 and KT-1, they use a PT-6A-62 variant that produces 950 shp (which is very close to the 945 shp that the HAL tender requires) but far short of the 1600 shp that the PT-6A-68B of the PC-21 produces.

The one issue that plagued the HPT-32 was its Lycoming engine cutting out in mid-air. If HAL couldn't sort out that issue in all its years of service, then hoping that they'd be able to build a PT-6A equivalent on their own with the license assembly knowledge that they have of the Garrett is expecting too much from them.


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PostPosted: 19 Jun 2012 22:05 
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Rahul M, never mind.

kartik,

can you clarify for me - as there is a lot of confusion wrt to HTT - 40. if HTT - 40 is a separate HAL effort as this seems to indicate where as i have read somewhere that HAL will just brand the selected basic trainer (Piltaus, in this case) and go the skd/ckd route.

what about this and this??

total confusion IMO.


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PostPosted: 19 Jun 2012 22:27 
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Pragnya sahab,

Nothing much has moved on the BEML and the Embraer side. You can safely forget the BEML project now with the fiasco that they find themselves in. Truth be told, I don't trust them to be able to produce anything. They would have assembled in any case, like they did for the Tatra. And if they cannot modify the steering wheel of a truck, forget a top of the line trainer aircraft. And if Gen Singh is correct about the service support, I would pray that BEML never produces a trainer.

IAF will induct the 75 trainer planes from Pilatus. Some of these planes will be imported straight from Switzerland, the rest will be produced at HAL in batches from CKDs, and SKDs.

Apart from the above, HAL is going to build an indigeneous trainer on its own called HTT-40. The effort is already underway since January 2012. They floated a tender for engines for the same. They are going to place a firm order of 124 engines, with a possibility of 300 more engines in the next 10 years. I provided some details on the same in the last page of this same thread.


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PostPosted: 19 Jun 2012 22:28 
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pragnya wrote:
...

kartik,

can you clarify for me - as there is a lot of confusion wrt to HTT - 40. if HTT - 40 is a separate HAL effort as this seems to indicate where as i have read somewhere that HAL will just brand the selected basic trainer (Piltaus, in this case) and go the skd/ckd route.

what about this and this??

total confusion IMO.


From the experiences IAF had with indigenous efforts, like the LCA, which were delayed too long for its replacement needs of old types in service, the new acquisition policy seems to be "1/3 - 2/3" approach. 1/3 of fleet requirements to be purchased outright with license production and then 2/3 of fleet requirements to be fulfilled by indigenous R&D effort. This way if there are significant delays in the domestic efforts IAF will increase the quantities of the license production. IMO, pretty good risk-mitigation strategy while at the same time promoting local R&D.


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PostPosted: 19 Jun 2012 22:52 
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Kartik wrote:
The one issue that plagued the HPT-32 was its Lycoming engine cutting out in mid-air. If HAL couldn't sort out that issue in all its years of service, then hoping that they'd be able to build a PT-6A equivalent on their own with the license assembly knowledge that they have of the Garrett is expecting too much from them.

OT but I am cross posting:
Quote:
With public offices, I don't think that we will get any better than the snail's pace ... I am sorry to say this, but there needs to be much more personal gains/losses at stake than national interest for things to roll.

If I were to tell you what I feel, i would say, just take the engineering group from HAL and place it under Mahindra and see how fast and how good results we get. I was just watching the "Wings of Russia" documentary. They used to have timelines of 1-2 years from drawing board to prototype and 1-2 years for factory and "state" tests. I agree that a modern fighter takes much more time, but decades to fix critical errors like fuel supply!

If HAL would have had a HTT-40 now, they would have got the orders for the 75 trainers that Pilatus won! Yes, IAF did not show interest to the HTT-35. But how could HAL not foresee that such a trainer would be needed en-mass. There was a sureshot order and big one at that. They should have found funds to keep it afloat and make incremental changes till the order couuld be placed in or around 2008. The ROI is just phenomenal. Any company would do it! Alas, HAL management did not see or simply did not care! I am sorry to be harsh, but this thing burns me from inside.

There has to be more at stake. I may be naive, but I feel there is a lot of "Kiske baap ka kya jata hai" attitude in the management of the public entities which trickle down to lower levels as well.


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PostPosted: 19 Jun 2012 22:53 
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indranilroy wrote:
Pragnya sahab,

Nothing much has moved on the BEML and the Embraer side. You can safely forget the BEML project now with the fiasco that they find themselves in. Truth be told, I don't trust them to be able to produce anything. They would have assembled in any case, like they did for the Tatra. And if they cannot modify the steering wheel of a truck, forget a top of the line trainer aircraft. And if Gen Singh is correct about the service support, I would pray that BEML never produces a trainer.


totally agree. no issue there. however -

Quote:
IAF will induct the 75 trainer planes from Pilatus. Some of these planes will be imported straight from Switzerland, the rest will be produced at HAL in batches from CKDs, and SKDs.

Apart from the above, HAL is going to build an indigeneous trainer on its own called HTT-40. The effort is already underway since January 2012. They floated a tender for engines for the same. They are going to place a firm order of 124 engines, with a possibility of 300 more engines in the next 10 years. I provided some details on the same in the last page of this same thread.


look at this to which i alluded to last -

Quote:
In addition to buying 75 Pilatus trainers in fly-away condition from Switzerland, the IAF has asked Hindustan Aeronautics Ltd (HAL) to develop an indigenous trainer aircraft (dubbed the Hindustan Turbo Trainer – 40, or HTT-40), and to build 106 of those trainers for the IAF.

But the MoD and HAL have dragged their feet on this indigenous project, says Pushpindar Singh, editor of Vayu aerospace magazine. “Since HAL has made little headway so far, they could end up building 106 PC-7 Mark II trainers under licence from Pilatus, instead of developing an indigenous trainer. That would be an opportunity lost,” says Singh.


from here

things seem pretty clear. IAF wants HTT-40 to be skd/ckd build by HAL!! remember 106 is the number of Pilatus HAL will build.

in the absence of a basic trainer 'selected' the HAL effort was worth - provided IAF had agreed to - which was not the case. now that Pilatus is selected, what will HAL achieve with the indigenous effort?? who are they going to sell?? IAF will get Pilatus. why would HAL waste funds into a venture which the user is not interested like Arjun!! in any case HAL would be busy with Pilatus prod with SKD/CKD which they have always been comfortable with. :wink:

IMO HTT-40 may have been a plan but is super ceded with Pilatus.


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PostPosted: 19 Jun 2012 23:53 
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If HAL can't get ready to serial produce HTT-40 from 2016-2017 time frame, the 106 HTT-40 orders will be changed to PC-7 further orders.

The incentive for HAL to seril produce HTT-40 instead of continuing the assembly of further PC-7 is the much higher profit margin. But if you are hinting at HAL dragging it's feet, simply because if worse comes to worst, they will assemble extra PC-7s, I feel it is a legitimate concern. I am hoping against it because HAL would have started serial production of Tejas and IJT by then and because HAL says that it has already started designing the trainer. If HAL cannot build an ab initio trainer with an imported engine, after already having the technology and knowhow needed for building hydraulics, avionics, cockpit display, it should shut shop.


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PostPosted: 20 Jun 2012 06:04 
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pragnya wrote:
Rahul M, never mind.

what ?? :roll:


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PostPosted: 20 Jun 2012 06:39 
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Rahul M wrote:
pragnya wrote:
Rahul M, never mind.

what ?? :roll:



Rahul M wrote
Rahul M wrote:
thanks a lot pragnya.


to which pragnya replied

pragnya wrote:
Rahul M, never mind.


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