HAL Tejas | Updates, News & Discussions-[Thread 2]

[Rajaraja Chola]

Hi @Han Patriot
You're slightly off mark here,
Mark-1(IOC): No inflight refueling/No AESA/No BVR- 20 ordered
Mark-1(FOC): Inflight Refueling/Derby BVR(Derby-ER is also slated to come), However no AESA-40 ordered(I am not sure about the number though)
Mark-1A: Advanced AESA+EW suite+ various other upgrades-83 ordered.
Mark-2: Mark-1A+Uprated engine in 90+kN thrust range(Which basically results in an entirely different plane). Changing of powerplant is the most difficult of all if the power plant happens to be in entirely different category and structural shape and size. It is Mark-1A and Mark-2 that IAF needs in huge numbers.

Are u sure Mark 1 IOC have no BVR? It has an MMR Radar and tested various BVR missiles.

 

[DarX]

Credit to @X_Killer
30 Jun 2017..
On the final day of the first year of Sqn Formation day, HAL, LCA Production Group had the first flight of LCA SP-6 (LA-5006).
After the initial flights, SP-6 will be the fifth member of Flying Daggers..

Still seems like it will need another 10 years to mature as a platform.

 

[Trisonics]

Still seems like it will need another 10 years to mature as a platform.

Wow you have some insane powers of prediction by just viewing a picture. Can you explain why 10 years and tell us more on why it's not mature? or you may just say "I'm jealous" and we being a very generous lot, will let you go..

 

[DarX]

Wow you have some insane powers of prediction by just viewing a picture. Can you explain why 10 years and tell us more on why it's not mature? or you may just say "I'm jealous" and we being a very generous lot, will let you go..

Do you know at what stage it is currently? It has yet to start its gun firing trials and gain its FOC. If Hindustan took 40 years to get to this stage, it is by no means a stretch to say that they will take another 10 years to iron out all the bugs.

But I will say that you lot are jealous. There is no doubt about that.

 

[X_Killer]

Do you know at what stage it is currently? It has yet to start its gun firing trials and gain its FOC. If Hindustan took 40 years to get to this stage, it is by no means a stretch to say that they will take another 10 years to iron out all the bugs.

But I will say that you lot are jealous. There is no doubt about that.

I don't know why you guys call 40years but I'll not clarify timeline again because telling the facts to dumbs and blinds hv no meaning.

Anyways, I can say jf-17 still have to practice LGBs , HMD, increment of carbon fibre etc.
Isn't it require more than a decade to expertise on your own (not on china).
Anyways, enjoy your day

 

[DarX]

just ask him whats pakistan contribution to jf 17
by that logic su 30 should be indian plane
no ancillary industries ,no r&d ,no patent nothing
and they are commenting on others platform

Why are you asking him to put forward questions? Are you scared?

I don't know why you guys call 40years but I'll not clarify timeline again because telling the facts to dumbs and blinds hv no meaning.

Anyways, I can say jf-17 still have to practice LGBs , HMD, increment of carbon fibre etc.
Isn't it require more than a decade to expertise on your own (not on china).
Anyways, enjoy your day

The project was initiated in 1975 and so it has been more than 40 years of development which resulted in the prototype of the LCA Tejas. But if you want to deny or rewrite your own history as is common practice in Hindustan, we can't really stop you from fooling yourself.

The fact remains that the JF-17, in its current form, is more capable than the PAF legacy fighters and so is effectively replacing them. It has achieved its program objective.

The LCA Tejas still remains in development and has failed to replace the IAF's old fighters. This has led to the IAF now looking to waste another $20 billion for a second foreign fighter to do what its great INDIGENOUS fighter project was supposed to do.

 

[DarX]

whats ur contribution
any design,patent,any data
does pac even have wind tunnel

What is the status of your LCA tejas?
Replaced the Mig-21? Has FOC? Fired its gun?
Does HAL even have literate management?

 

[vikata]

What is the status of your LCA tejas?
Replaced the Mig-21? Has FOC? Fired its gun?
Does HAL even have literate management?

i asked u a simple question but now i am thinking u are not literate enough to understand difference between a screw driver assembly plane , and a developing/maturing technology
u guys have no metallurgical know how pathetic steel capacity no industrial base and will still keep on bragging
enough of ur trolling now please spare the thread which is meant keep others updated about development
but alas u dont know what is development

 

[DarX]

i asked u a simple question but now i am thinking u are not literate enough to understand difference between a screw driver assembly plane , and a developing/maturing technology
u guys have no metallurgical know how pathetic steel capacity no industrial base and will still keep on bragging
enough of ur trolling now please spare the thread which is meant keep others updated about development
but alas u dont know what is development

I asked you a simple question in return but since you have no shame, you dodged it like you Hindustanis always do.

The main question is what has Hindustan achieved?? What is the status of the great Tejas? It remains under testing while the IAF flies its old Mig-21. Shameless Indians can't explain that.

 

[Han Patriot]

Do you know at what stage it is currently? It has yet to start its gun firing trials and gain its FOC. If Hindustan took 40 years to get to this stage, it is by no means a stretch to say that they will take another 10 years to iron out all the bugs.

But I will say that you lot are jealous. There is no doubt about that.

Are you serious? They haven't even start firing guns?

 

[GURU DUTT]

Why are you asking him to put forward questions? Are you scared?



The project was initiated in 1975 and so it has been more than 40 years of development which resulted in the prototype of the LCA Tejas. But if you want to deny or rewrite your own history as is common practice in Hindustan, we can't really stop you from fooling yourself.

The fact remains that the JF-17, in its current form, is more capable than the PAF legacy fighters and so is effectively replacing them. It has achieved its program objective.

The LCA Tejas still remains in development and has failed to replace the IAF's old fighters. This has led to the IAF now looking to waste another $20 billion for a second foreign fighter to do what its great INDIGENOUS fighter project was supposed to do.

you must be smoking something really good quality dear

anyway some facts

tejas projeact was thought of soon after limitations of mig21 were learned in 1971 war and its sucessor was planned but we were a very poor nation then so for next 15 years no one even botherred to see into it then in 1990 a study was relaunched and only in 1993 the first ammount of some 453crore or someithing was sanctioned for it and its first prtotype flew in 2001 and since then some 19 prtotypes in 4 formats have been built and have completed more than 3600+ flying hours without any air mishap till date and till date A TOTAL OF APPROX NOT MORE THAT 2.3 BILLION US DOLLARS HAVE BEEN PUT IN ENTIRE LCA TEJAS PROJECT WHICH INCLUEDS PURCHASE OF ALL KINDS OF SPECIAL TOOLINGS, RIGS, SOFTWARES , MONEY GIVEN TO INTERNATION PARTNERS FOR COUNSELTENCY , FOR PARTS , RADARS , AVIONICS , ENGINES , WEAPONS & MISSILES & BOMBS, PODS AND TELLEMATARRY EQUPMENTS ND HANESSES AND ALL OTHER ALLIED PRODUCTS AND MONEY SPEND ONITS R&D AND LABS AND ALLIED INFRA (FUEL & SALARRY FOR SIENTISTS AND PILOTS ARE EXTRA) now you tell me which developed nation did acomplish so much and made whole aircraft manufactruing isndurty and ecosystem around a simple and compact fighter jet in such a small budget

now what does Tehas as a fughter has that JF17 does not

1. tejas has 45% of its total body weight & 95%+ in skin area made of carbon composites which makes it very light and very less mantainence oriented and veru less visible to radar waves as compared to all metal body frame of JF17

2. tejas has 4 channel digital fly by wire in 3 axis while JF17 has only in two and that too anaolog go check yopur facts how it helps a fighter

3. tejas has been intigrated and tested with LITENING 3 G3 laser designation pod and DASH 3 HMDS & HUD and Python5 WVR for great very HOBS capability that JF17 does not has and is intigrated and tested with paveway , griffin and spike family of PGMs , LGBs and SDBs and glide bombs

4. teajs is already tested with EL-2032 MMR with Derby & I Derby ER BVR and OBOGS and IFR probe and mayave type EW+ECM sysytem and is having 1/3rd RCS value that of M2K (M2K rcs is 3msq in clean configuration)

rest you speculate yourelf

 

[DarX]

Are you serious? They haven't even start firing guns?

No man. The only gun that fires in Hindustan is their mouths.

you must be smoking something really good quality dear

anyway some facts

tejas projeact was thought of soon after limitations of mig21 were learned in 1971 war and its sucessor was planned but we were a very poor nation then so for next 15 years no one even botherred to see into it then in 1990 a study was relaunched and only in 1993 the first ammount of some 453crore or someithing was sanctioned for it and its first prtotype flew in 2001 and since then some 19 prtotypes in 4 formats have been built and have completed more than 3600+ flying hours without any air mishap till date and till date A TOTAL OF APPROX NOT MORE THAT 2.3 BILLION US DOLLARS HAVE BEEN PUT IN ENTIRE LCA TEJAS PROJECT WHICH INCLUEDS PURCHASE OF ALL KINDS OF SPECIAL TOOLINGS, RIGS, SOFTWARES , MONEY GIVEN TO INTERNATION PARTNERS FOR COUNSELTENCY , FOR PARTS , RADARS , AVIONICS , ENGINES , WEAPONS & MISSILES & BOMBS, PODS AND TELLEMATARRY EQUPMENTS ND HANESSES AND ALL OTHER ALLIED PRODUCTS AND MONEY SPEND ONITS R&D AND LABS AND ALLIED INFRA (FUEL & SALARRY FOR SIENTISTS AND PILOTS ARE EXTRA) now you tell me which developed nation did acomplish so much and made whole aircraft manufactruing isndurty and ecosystem around a simple and compact fighter jet in such a small budget

now what does Tehas as a fughter has that JF17 does not

1. tejas has 45% of its total body weight & 95%+ in skin area made of carbon composites which makes it very light and very less mantainence oriented and veru less visible to radar waves as compared to all metal body frame of JF17

2. tejas has 4 channel digital fly by wire in 3 axis while JF17 has only in two and that too anaolog go check yopur facts how it helps a fighter

3. tejas has been intigrated and tested with LITENING 3 G3 laser designation pod and DASH 3 HMDS & HUD and Python5 WVR for great very HOBS capability that JF17 does not has and is intigrated and tested with paveway , griffin and spike family of PGMs , LGBs and SDBs and glide bombs

4. teajs is already tested with EL-2032 MMR with Derby & I Derby ER BVR and OBOGS and IFR probe and mayave type EW+ECM sysytem and is having 1/3rd RCS value that of M2K (M2K rcs is 3msq in clean configuration)

rest you speculate yourelf

You should really wake up now!

Wow great achievements. Now that really makes up for the IAF still flying Mig-21s, the LCA tejas still at least a decade off from being inducted in sufficient numbers, and the IAF having to spend another $20 billion to import a replacement fighter in its place. Good work!

 

[GURU DUTT]

No man. The only gun that fires in Hindustan is their mouths.



Wow great achievements. Now that really makes up for the IAF still flying Mig-21s, the LCA tejas still at least a decade off from being inducted in sufficient numbers, and the IAF having to spend another $20 billion to import a replacement fighter in its place. Good work!

well guess what IAF has already orderred 40 LCA MK1 nad 83 MK1a (with AESA"we already have tested indian LRDE made UTTAM GaA based AESA & in deal with israelies to get EL 2052 AESA" and other imprrovements in weight reduction and with OBOGS & IFR and new lighter but stiffer landing gear)

and when MK2 version comes 120 more to be orderred as for IN it has just stopped LCA from aircraft carrier roles due to troublesome landing gear but has already orderred 40 for shore defnce so get your facts right kid

now we are buying F16blk 70 to fill in numbers and to prepair a two front war and tejas are for replacement of Mig21s only and that means for point defnce meeaning homeland security only not for SEAD/DEAD or precission bombings or attacking enemy postions for that role MKI , jaguars , Mig29, M2K , rafale and F16 & FGFA in future will do the Jib but tejas will never do that job hope you get it this time

LCA AF MK2
***************
The MK2 is an improvement over LCA AF Mk1 with higher thrust engine. This aircraft will have improved survivability, maintainability and obsolescence mitigation. Active Electronically Scanned Array (AESA) Radar, Unified Electronic warfare Suite (UEWS) and On-Board Oxygen Generation System (OBOGS) are some of the state of the art technologies planned to be integrated. The cockpit design has been improved with bigger size, smart Multi function Displays (MFD) and smart Head Up Display (HUD).

The scope of FSED Phase 3 as per project sanction is as follows:-
Design, develop and build two aircraft with

New Engine
Necessary changes in the structure and systems to integrate the new engine
Weight reduction to improve performance
Unified EW Suite (UEWS)
Development of new DFCC, its test facilities and integration
Upgrade/modification/maintenance of test facilities.

Extensive studies were carried out at ADA to make suitable changes in LCA AF Mk2 to address the maintainability issues observed in LCA AF Mk1, improve the systems like fuel, landing gear and brakes, electrical, armament etc. Also a number of new/upgraded systems have been incorporated to make the aircraft more contemporary. As a result, the scope for FSED Phase 3 increased substantially due to extensive changes incorporated to have an improved aircraft with improved performance in all aspects. Important new/ upgrades of systems are listed below:

Introduction of 500mm plug in fuselage
Active Electronically Scanned Array (AESA) radar
On Board Oxygen Generation System (OBOGS)
New Cockpit with larger size smart displays
One Mission Management and Display Computer (MMDC) in place of two Open Architecture Computers
HMDS based on optical sensor
Smart HUD with improved Field of Vision
Higher power Jet Fuel Starter
Servo controlled Airbrake under the command of DFCC control
Pressurized Fuel System
Unified Pylon Interface Computer (UPIC) in place of individual Pylon Interface Boxes
Combined Interrogator Transponder (CIT)
Indigenous Actuators
NVG(Night vision Goggle) compatible lighting
Activities carried out

Presently, the configuration of LCA AF Mk2 has been frozen with all the design improvements and Preliminary Design Review (PDR) has been carried out in June 2014 and detail design is in progress. GE-F414 engine was selected as the higher thrust engine for LCA AF Mk2 and a contract was signed with M/s GE, USA in September 2012. The CDR of alternate engine has been completed. Engine is undergoing final qualification and lifting evaluation tests.

Aerodynamics
******************
A number of aerodynamics improvements have been carried out to reduce drag and improve performance:
Drag reduction studies have been completed. Canopy reshaping, outer cowl modification, actuator fairing extension and supersonic pylons have resulted in approx 20 counts (8%) drag reduction in supersonic regimes.
Wind Tunnel studies have been completed.
Aero loads computations have been completed

Airframe
***********
Three doors AAID finalized.
BMI material developed for high temperature applications.
Composite pipelines developed for ECS.
Spine widened for providing accessibility and maintainability.
Pilot step provided for pilot's emergency egress.
SPS bay redesigned to improve maintainability.

Engine
*********
Aircraft engine bay ventilation scheme has been finalised.
Engine-Airframe Interface Control Diagram (ICD) has been prepared.
Aircraft Qualification Tests have been completed. ASMET (Air c r a ft Simulated Mission Endurance Tests) results are under discussion.
New JFS with higher torque GTSU- 135 is under development.

Mechanical Systems
**************************
Layouts preparation and detail design is in progress.
Feasibility to increase wheel size for increasing the capacity of brake system are in progress.
Trials to offload one hydraulic system to reduce the load on JFS during starting are going on. This will help in cold weather high altitude operations.
Liquid Cooling System configurations, separate for AESA and UEWS have been finalised.
Studies to shift the Air to Air refueling probe to right are in progress to obviate probe coming in Field of View of Head Up Display (HUD).

Integrated Flight Control System
*****************************************
DFCC: CDR completed Realization st of QT unit by 31 Dec 2016.
Indigenous Actuators: Primary Actuators QT completed, Iron Bird testing completed. Being evaluated on LCA Mk1. Secondary Actuators under development.

Avionics
**********
Avionics architecture has been finalized.
New cockpit with bigger size (6”x8”) displays has been designed.
Development of new LRUs is in progress.
Avionics will be ready by Dec 2018.
Configuration of Active Phased Array based Unified Electronic Warfare Suite (UEWS) finalised.
The number of elements that can be incorporated with the existing geometry for the Antenna Array unit of AESA Radar has been finalised and performance parameters like range and Effective Radiated Power (ERP) computed.
Night Vision Goggl e (NVG) compatible L E D lights for Navigation lights and Taxi / Landing Lights are being developed. Engineering models have been developed. Performance is being evaluated.
Conformal antenna developed for V/UHF.

Under development Technologies for LCA
*****************************************************
Development of critical advanced technologies for indigenous equipments and systems is in progress. Project sanctions for development of technologies have been given to identified work centers. The following project s has been completed;

DALIA actuators
Indigenous development of high strength titanium alloy Ti-10
Development of Friction Stir Waelding Technology for Aircraft Structures
Aerodynamic studies of performance of LCA wing with Vortex Generators
LCF data generation testing on 15-5 PH steel
Digital Communication Scheme for Tejas

On-going Projects
***********************
The following major projects have been initiated and are in progress

Development of V/UHF Conformal Antenna
Development of Digital Audio Control System (DACS)
Digital Liquid Oxygen (LOX) Indicators/ Transmitters
Development of improved RAM
Fatigue data generation on AA 7010 Aluminium alloy
Development of Zn-Ni plating as an alternate to cadmium plating
Development of high temperature beta titanium alloy DMR 700
Development of On-Board Oxygen Generation System (OBOGS)
Development of Cabin Shut Off Valve (CBSOV) of ECS,
Development of AMAGB Bearings
Advanced Subminiature Telemetry System,
Jet Fuel Starter (JFS) Mark 2
Development of MEMS based Pressure Transducers and temperature sensors for Hydraulics system.(Ps all this data shown is of late 2014 rest specualte yourself )

 

[DarX]

well guess what IAF has already orderred 40 LCA MK1 nad 83 MK1a (with AESA"we already have tested indian LRDE made UTTAM GaA based AESA & in deal with israelies to get EL 2052 AESA" and other imprrovements in weight reduction and with OBOGS & IFR and new lighter but stiffer landing gear)

and when MK2 version comes 120 more to be orderred as for IN it has just stopped LCA from aircraft carrier roles due to troublesome landing gear but has already orderred 40 for shore defnce so get your facts right kid

now we are buying F16blk 70 to fill in numbers and to prepair a two front war and tejas are for replacement of Mig21s only and that means for point defnce meeaning homeland security only not for SEAD/DEAD or precission bombings or attacking enemy postions for that role MKI , jaguars , Mig29, M2K , rafale and F16 & FGFA in future will do the Jib but tejas will never do that job hope you get it this time
View attachment 407567
LCA AF MK2
***************
The MK2 is an improvement over LCA AF Mk1 with higher thrust engine. This aircraft will have improved survivability, maintainability and obsolescence mitigation. Active Electronically Scanned Array (AESA) Radar, Unified Electronic warfare Suite (UEWS) and On-Board Oxygen Generation System (OBOGS) are some of the state of the art technologies planned to be integrated. The cockpit design has been improved with bigger size, smart Multi function Displays (MFD) and smart Head Up Display (HUD).

The scope of FSED Phase 3 as per project sanction is as follows:-
Design, develop and build two aircraft with

New Engine
Necessary changes in the structure and systems to integrate the new engine
Weight reduction to improve performance
Unified EW Suite (UEWS)
Development of new DFCC, its test facilities and integration
Upgrade/modification/maintenance of test facilities.

Extensive studies were carried out at ADA to make suitable changes in LCA AF Mk2 to address the maintainability issues observed in LCA AF Mk1, improve the systems like fuel, landing gear and brakes, electrical, armament etc. Also a number of new/upgraded systems have been incorporated to make the aircraft more contemporary. As a result, the scope for FSED Phase 3 increased substantially due to extensive changes incorporated to have an improved aircraft with improved performance in all aspects. Important new/ upgrades of systems are listed below:

Introduction of 500mm plug in fuselage
Active Electronically Scanned Array (AESA) radar
On Board Oxygen Generation System (OBOGS)
New Cockpit with larger size smart displays
One Mission Management and Display Computer (MMDC) in place of two Open Architecture Computers
HMDS based on optical sensor
Smart HUD with improved Field of Vision
Higher power Jet Fuel Starter
Servo controlled Airbrake under the command of DFCC control
Pressurized Fuel System
Unified Pylon Interface Computer (UPIC) in place of individual Pylon Interface Boxes
Combined Interrogator Transponder (CIT)
Indigenous Actuators
NVG(Night vision Goggle) compatible lighting
Activities carried out

Presently, the configuration of LCA AF Mk2 has been frozen with all the design improvements and Preliminary Design Review (PDR) has been carried out in June 2014 and detail design is in progress. GE-F414 engine was selected as the higher thrust engine for LCA AF Mk2 and a contract was signed with M/s GE, USA in September 2012. The CDR of alternate engine has been completed. Engine is undergoing final qualification and lifting evaluation tests.

Aerodynamics
******************
A number of aerodynamics improvements have been carried out to reduce drag and improve performance:
Drag reduction studies have been completed. Canopy reshaping, outer cowl modification, actuator fairing extension and supersonic pylons have resulted in approx 20 counts (8%) drag reduction in supersonic regimes.
Wind Tunnel studies have been completed.
Aero loads computations have been completed

Airframe
***********
Three doors AAID finalized.
BMI material developed for high temperature applications.
Composite pipelines developed for ECS.
Spine widened for providing accessibility and maintainability.
Pilot step provided for pilot's emergency egress.
SPS bay redesigned to improve maintainability.

Engine
*********
Aircraft engine bay ventilation scheme has been finalised.
Engine-Airframe Interface Control Diagram (ICD) has been prepared.
Aircraft Qualification Tests have been completed. ASMET (Air c r a ft Simulated Mission Endurance Tests) results are under discussion.
New JFS with higher torque GTSU- 135 is under development.

Mechanical Systems
**************************
Layouts preparation and detail design is in progress.
Feasibility to increase wheel size for increasing the capacity of brake system are in progress.
Trials to offload one hydraulic system to reduce the load on JFS during starting are going on. This will help in cold weather high altitude operations.
Liquid Cooling System configurations, separate for AESA and UEWS have been finalised.
Studies to shift the Air to Air refueling probe to right are in progress to obviate probe coming in Field of View of Head Up Display (HUD).

Integrated Flight Control System
*****************************************
DFCC: CDR completed Realization st of QT unit by 31 Dec 2016.
Indigenous Actuators: Primary Actuators QT completed, Iron Bird testing completed. Being evaluated on LCA Mk1. Secondary Actuators under development.

Avionics
**********
Avionics architecture has been finalized.
New cockpit with bigger size (6”x8”) displays has been designed.
Development of new LRUs is in progress.
Avionics will be ready by Dec 2018.
Configuration of Active Phased Array based Unified Electronic Warfare Suite (UEWS) finalised.
The number of elements that can be incorporated with the existing geometry for the Antenna Array unit of AESA Radar has been finalised and performance parameters like range and Effective Radiated Power (ERP) computed.
Night Vision Goggl e (NVG) compatible L E D lights for Navigation lights and Taxi / Landing Lights are being developed. Engineering models have been developed. Performance is being evaluated.
Conformal antenna developed for V/UHF.

Under development Technologies for LCA
*****************************************************
Development of critical advanced technologies for indigenous equipments and systems is in progress. Project sanctions for development of technologies have been given to identified work centers. The following project s has been completed;

DALIA actuators
Indigenous development of high strength titanium alloy Ti-10
Development of Friction Stir Waelding Technology for Aircraft Structures
Aerodynamic studies of performance of LCA wing with Vortex Generators
LCF data generation testing on 15-5 PH steel
Digital Communication Scheme for Tejas

On-going Projects
***********************
The following major projects have been initiated and are in progress

Development of V/UHF Conformal Antenna
Development of Digital Audio Control System (DACS)
Digital Liquid Oxygen (LOX) Indicators/ Transmitters
Development of improved RAM
Fatigue data generation on AA 7010 Aluminium alloy
Development of Zn-Ni plating as an alternate to cadmium plating
Development of high temperature beta titanium alloy DMR 700
Development of On-Board Oxygen Generation System (OBOGS)
Development of Cabin Shut Off Valve (CBSOV) of ECS,
Development of AMAGB Bearings
Advanced Subminiature Telemetry System,
Jet Fuel Starter (JFS) Mark 2
Development of MEMS based Pressure Transducers and temperature sensors for Hydraulics system.(Ps all this data shown is of late 2014 rest specualte yourself )

Haha. A whole lot of ifs and buts in your post. LCA Tejas is being developed and developed, but not being commissioned. Meanwhile, the IAF pilots keeping falling out of the sky with their Mig-21s. Brilliant.

 

[GURU DUTT]

Haha. A whole lot of ifs and buts in your post. LCA Tejas is being developed and developed, but not being commissioned. Meanwhile, the IAF pilots keeping falling out of the sky with their Mig-21s. Brilliant.

well thats what you have to say as if pakistani fighter jets dont meet with mishaps do you want me to get to your level and give tou time line that in last few years how many of your fighter jets have crashed and how many of your fighter pilots got killed in them ..... well kid lets remain on topic we are not USA or saudia that we are so rich we change fighter jets just like that and thats why we negociate for so long and we are tesing so rigrously so no problems remain and all ironed out before its formally given to indian fighter pilots .. so kid look at the bigger issue not rivial matters