World's smallest combat jet LCA Tejas' Mark-II avatar to be longer

[calmDown@all]

View attachment 279433

 

[GURU DUTT]

But 6 years for Lengthening Airframe, is just way too much and I guess, it is pure BS..

even a illitrate shanty garage owner takes 6 weeks to strech a car into a limo why cant they with all that knowledge do it in say six months and test it in next six ?

 

[satishkumarcsc]

I dont think it is going to happen at all. I prefer the modified naval tejas over this waste of time.

 

[GURU DUTT]

wo kaise ?

 

[shah1398]

Our money. Go ask for some aid from others.

In that case may U keep on spending like this on everything so for times to come.

 

[calmDown@all]

wo kaise ?

View attachment 279435

har tarike se

 

[GURU DUTT]

har tarike se

.......

In that case may U keep on spending like this on everything so for times to come.

@calmDown@all dekh isse kehte hain tailee ka tail jalle mashaalchee kee *****

 

[calmDown@all]

.......

kya bhai ap bhi na be vjah sabhki lete rehte ho @BABA AGHORI @ ki trah
achi bat nahi hai rofl:

@clamdown@all dekh isse kehte hain tailee ka tail jalle mashaalchee kee *****

ab aur koi chara nahi raha

 

[shah1398]

dekh isse kehte hain tailee ka tail jalle mashaalchee kee *****

Sit thora sa translate b kar dain so i can also enjoy it

 

[calmDown@all]

Sit thora sa translate b kar dain so i can also enjoy it

bhaijjan he means to say app ko kyon pareshani ho rahi hai ye hmare paise hain hmari marzi ham jaise bhi kharch karen

 

[GURU DUTT]

Sit thora sa translate b kar dain so i can also enjoy it

oil sellers oil is burning in the torch but not than torch bearers XXXXX ....

 

[shah1398]

bhaijjan he means to say app ko kyon pareshani ho rahi hai ye hmare paise hain hmari marzi ham jaise bhi kharch karen

Meray bhai mujhay bhala q pareshani hogi? Isi liyay tu itni barhya wish di mein nay

torch bearers oil is burning but not more than oil sellers XXXXX ....

And that did hurt

 

[GURU DUTT]

Meray bhai mujhay bhala q pareshani hogi? Isi liyay tu itni barhya wish di mein nay



And that did hurt

mai sadke aapkee is faraq dillee aur masoomiat pe

 

[calmDown@all]

mai sadke aapkee is faraq dillee aur masoomiat pe

View attachment 279437

chod de bhai jane de

Excellent Post but I don't think the MK2 design have been frozen yet and I think the lenght of MK2 LCA would increase further.

@PARIKRAMA @Abingdonboy

1. Change of Engine will increase the belly, the wings lenght would remain same, as they are already big thus the L/W ratio have to maintained.

2. Increase in length would more space for more avionics, like internal Jammers, IRST.

3. Increase in length or change in airframe design to lower the DRAG.

4. @Blue Marlin AESA needs more Power, and biggest problem with AESA is not the Power but the heat produced, and need proper heat dissipation Mechanism.

5. Change in length and structural design mean whole set of flight testing needed and FBW algorithm to be validation.

6. Change of Engine means, whole set of parts needs to be designed and tested from Fuel pump, hydraullic distribution mechanism, Electrical wiring, landing gear, hydraulic pump, accutators, Air inlet etc.

7. Taking the experience from the MK1, I think ADA is going for the Modular design this time, and better maintainability and accessibility design.

8. MK2 will have TVC (EJ200 TVC nossle on F414 INS), for better agility.

9. Landing Gear Design like SAAB gripen NG would allow more Hard Point, and could accumudate Brahmos MINI in its centerline Pylon.

bhaijan isn't it possible to intigrate laser based wepon on tejas mark2 which could actully make it more lethal in times of war of areial combat since this would disengage threats it would have to cope with if posible

 

[PARIKRAMA]

Excellent Post but I don't think the MK2 design have been frozen yet and I think the lenght of MK2 LCA would increase further.

@PARIKRAMA @Abingdonboy

1. Change of Engine will increase the belly, the wings lenght would remain same, as they are already big thus the L/W ratio have to maintained.

2. Increase in length would more space for more avionics, like internal Jammers, IRST.

3. Increase in length or change in airframe design to lower the DRAG.

4. @Blue Marlin AESA needs more Power, and biggest problem with AESA is not the Power but the heat produced, and need proper heat dissipation Mechanism.

5. Change in length and structural design mean whole set of flight testing needed and FBW algorithm to be validation.

6. Change of Engine means, whole set of parts needs to be designed and tested from Fuel pump, hydraullic distribution mechanism, Electrical wiring, landing gear, hydraulic pump, accutators, Air inlet etc.

7. Taking the experience from the MK1, I think ADA is going for the Modular design this time, and better maintainability and accessibility design.

8. MK2 will have TVC (EJ200 TVC nossle on F414 INS), for better agility.

9. Landing Gear Design like SAAB gripen NG would allow more Hard Point, and could accumudate Brahmos MINI in its centerline Pylon.

The 0.5m increase may not get all internal avionics fit inside as the majority portion would go for widening the air intake. Some points which may help are listed below

Thrust to drag
Since frontal area dominates drag, and engine frontal area dominates aircraft frontal area, thrust to drag ratio will take a form of thrust divided by the engine frontal area (inlet diameter used).
F404-GE-402: 19,88 N/cm2
F-414-400: 20,52 N/cm2
F-414 EPE: 24,62 N/cm2

Thrust to weight
Engine thrust to weight ratio is an important (though not the only) factor in determining aircraft’s thrust-to-weight ratios, just as engine’s thrust-to-drag ratio is an important factor in determining aircraft’s thrust-to-drag ratio.
F404-GE-402: 7,76:1
F414-400: 8,95:1
F-414 EPE: 10,74:1

Fuel consumption
Fuel consumption depends on both thrust and thrust-specific fuel consumption. Since aircraft with higher TWR can reduce thrust and still match performance of lower-TWR aircraft, both thrust-specific and total fuel consumption, at dry thrust and afterburner, will be compared.
Dry thrust:
F404-GE-402: 0.826 kg/daN h
F414-400: 0,84 kg/daN h,
F414 EDE/EPE: 0,81 kg/daN h
Afterburner:
F404-GE-402: 1.77,5 kg/daN h
F414-400: 1,85 kg/daN h
F414 EDE/EPE: 1,78 kg/daN h

Bypass ratio
Main function of low bypass ratio is to enable the engine to achieve high thrust-to-weight and thrust-to-drag ratio at dry thrust; both these qualities are required for supercruise.
F404-GE-402: 0,34:1
F414-400: 0,25:1
F414 EDE/EPE: 0.24:1

Percentage of maximum thrust achievable on dry power:
F404-GE-402: 62%
F414-400: 69%
F414 EDE/EPE :70%

Service life is as follows:
F404-GE-402: 4.000 h
F414: 6.000 h

TEchnically i was hoping that MK2 can have a more refined combat range of 800km with internal fuel so that the gain in 15% approx MTOW over Mk1 can be properly translated into a direct gain in firepower. But i believe that may not be so much possible as MK2 will require a 1200L tank centreline with its combat range almost similar to MK1. Thus the gain in firepower may be more of 10-12%. This makes me think a bit oddly about the whole MK2 saga.

The main problem is first production of test protos aimed at 2021 and then running a 3-5 years minimum 3-4 protos to validate the MK2 every aspect. Then handing SP units IOC types to IAF who will ask changes and finally incorporating these changes and passing FOC.

So end to end time from now in years
6 (2015-2021)+ 5 (4 protos and validation of every system and clocking mandatory flight airtime for checking every aspect )+ 3 (IOC to SP to weapon system integration and validation)+ 2 (Final FOC along with changes suggested by IAF) = 15~16 years

So 2030 year.
What to expect by then.. I can imagine LCA Mark 2A with 5th gen avionics, EW and other Ultra LOng Ranged BVR within 2 years ie 2032 for minimum 150 jets order.

The rest can be made via LCA Mk3 which HAL will produce by 2035 for proto testing.

Sorry for being cynical.. Seems the drama is making me feel a bit idiotic for our indigenous fighter programme.
God knows what they will say about AMCA (if and when the plan is put into action)

I guess IAF should just first get 100 Mark1a and if they love it then order another 100 and bundle out mark2. Better use those resources for 2030 timeline by doing AMCA project and adopting it completely and overseeing execution from the go.