LCA TEJAS MK1 & MK1A: News and Discussion

[Bleh]

Currently, the missile has a range of over 100 km and has been successfully test-fired against Banshee target aircraft...
DRDO is looking to nearly doubling the range of the missile

Doubling range to 200 km, @porky_kicker @Chinmoy is this for Astra Mark2?

Also, the present Banshee target drone is only 3g capable & is completely subsonic, while Abhyas is 2g & reached Mach 0.5 (Lakhsya-2 reach Mach 0.7)... unlike older Ulka target drone that could do Mach 1.5!
Are tests against these enough? Can these carry out basic evasive maneuvers that a 8-9g fighter jet would?!..

 

[Chinmoy]

Doubling range to 200 km, @porky_kicker @Chinmoy is this for Astra Mark2?

Also, the present Banshee target drone is only 3g capable & is completely subsonic, while Abhyas is 2g & reached Mach 0.5 (Lakhsya-2 reach Mach 0.7)... unlike older Ulka target drone that could do Mach 1.5!
Are tests against these enough? Can these carry out basic evasive maneuvers that a 8-9g fighter jet would?!..

The point is BVRAAM is used against a target which is approaching you. So the target would be fully loaded unless its on a recce mission. So in that case a fully loaded jet is not going to perform 8g 9g evasive maneuver. It would rely more on ECM to hide themselves initially. So at most without shedding its payload its capability to outrun a missile is diminished a lot.

 

[Bleh]

...fully loaded unless its on a recce mission. So in that case a fully loaded jet is not going to perform 8g 9g evasive maneuver. It would rely more on ECM to hide themselves initially.

But what if its not bomb-trucked? With normal air combat payload, like our Su-30s on Feb 19?.. Or a F-16 with AAMs after shedding the bombs?

Looks like 6-8g can be pulled with load. Not terrible;
Deltas:

 

[IndianHawk]

Doubling range to 200 km, @porky_kicker @Chinmoy is this for Astra Mark2?

Also, the present Banshee target drone is only 3g capable & is completely subsonic, while Abhyas is 2g & reached Mach 0.5 (Lakhsya-2 reach Mach 0.7)... unlike older Ulka target drone that could do Mach 1.5!
Are tests against these enough? Can these carry out basic evasive maneuvers that a 8-9g fighter jet would?!..

No ramjet missile is not needed to double the range . Dual pulse motor can do that in shorter time period. Ramjet will power a new air to air missile and a new surface to air missile. ..

Regarding manuever astra can pull 40g near sea level!!

 

[Bleh]

No ramjet missile is not needed to double the range . Dual pulse motor can do that in shorter time period.

Thought so... So what's all this about doubling the range of Astra? Know anything?

 

[IndianHawk]

Thought so... So what's all this about doubling the range of Astra? Know anything?

Adding an additional to motor to astra just like as Israel created derby ER from original derby missile. The second motor called dual pulse provided extra energy/range at the end of missile envelope thus enlarging NEZ of missile significantly.

It can even further be improved just like American are going to do with aim 260 without ramjet.

 

[Bleh]

Adding an additional to motor to astra just like as Israel created derby ER from original derby missile. The second motor called dual pulse provided extra energy/range at the end of missile envelope thus enlarging NEZ of missile significantly.

It can even further be improved just like American are going to do with aim 260 without ramjet.

Also wasn't Astra 2 going to have multiple versions, with different propulsion systems including liquid & solid-fueled ramjet as well as dual pulse solid rocket?

 

[IndianHawk]

Also wasn't Astra 2 going to have multiple versions, with different propulsion systems including liquid & solid-fueled ramjet as well as dual pulse solid rocket?

Some people claim that astra mk2 will be ramjet based buts our ramjet / sfdr based tech will take some time to mature. Also it will be very costly.

Dual pulse astra will come faster (3-5 years) and will be much cheaper compared to meteor / sfdr .

Sfdr will come probably by 2028-30. And it will be t tip of spear . Bulk will be made up by astra / astra dual pulse .

 

[Chinmoy]

But what if its not bomb-trucked? With normal air combat payload, like our Su-30s on Feb 19?.. Or a F-16 with AAMs after shedding the bombs?

Looks like 6-8g can be pulled with load. Not terrible;
Deltas:

What is your normal Air combat load?
What would be your weapon load configuration?
How would you distribute it?

There is lot of question when you talk about decking up a combat mission. Anyway with a full A2A mission or attack mission load, a fighter can't undertake high g turns. Leave alone high g turns, it can't sustain mid level g maneuver of 4 to 5. To evade a missile, one needs to look at sustenance of G turn.

 

[Bleh]

What is your normal Air combat load?
What would be your weapon load configuration?
How would you distribute it?

Let's say all AAMs on all hardpoints or some empty pylons (jettisoned EFT or LGB).
These aircrafts in the videos seem to be sustaining pretty high-G turns... not enough to shed BVRs?

Looks like 6-8g can be pulled with load. Not terrible;
Deltas:

 

[Chinmoy]

Let's say all AAMs on all hardpoints or some empty pylons (jettisoned EFT or LGB).
These aircrafts in the videos seem to be sustaining pretty high-G turns... not enough to shed BVRs?

As I said, when you need to shake off an AAM, we have to sustain the G turns. With loads on your pylon, you can't expect the jet to sustain high G maneuver. Leave high G, you cant expect them to sustain mid level G. Sustainable high G maneuvers are obtained by clean config jets. Along with G turns, a jet needs to employ CM to shake off the hunter.
Unless the AAM has pathetic NEZ or seeker, just G turns is not going to save it.

 

[Bleh]

As I said, when you need to shake off an AAM, we have to sustain the G turns. With loads on your pylon, you can't expect the jet to sustain high G maneuver.

Why do you say so? ^Those planes seem to be sustaining pretty high-G turns pretty well with their moderate payloads... Compared to clean config demo maneuvers, atleast 70-80% performance, maybe more!

Also, I understood that to evade a BVRAAM, the instantaneous turn rate is more important than the sustained one.

 

[Chinmoy]

Why do you say so? ^Those planes seem to be sustaining pretty high-G turns pretty well with their moderate payloads... Compared to clean config demo maneuvers, atleast 70-80% performance, maybe more!

Also, I understood that to evade a BVRAAM, the instantaneous turn rate is more important than the sustained one.

Lets understand it this way.

Suppose you are traveling on a car which have a load of say 100 kg on rooftop carrier. Now you are getting chased by someone on a bike. Now to save yourself you are taking high speed turns rapidly and randomly. What about the integrity of the carrier where you have kept your load? What about the overall balance of your car?

A point would come when the carrier would give off resulting in damage of your car. You could sustain a long turn radius at a high speed. But it is not going to save you from the chaser. High G maneuver with short turn radius is what would save you. But how many such turn could your car sustain?

 

[patriots]

Guys please retweet if u can..
You wil get a high quality interview

 

[Bleh]

Super HD images of Rajnath Singh flying in LCA Tejas two-seater trainer prototype.

https://www.newindianexpress.com/ga...nath-singh-co-pilots-tejas-lca-102537--6.html

 

[Shashwat]

^^ Please host the image or attach. Stop hotlinking images from other sites.

 

[HariPrasad-1]

Actually for very slight gain in length, you get 60-90kN instead of 55-85kN...the engine itself is 50kg lighter & of less diameter (less drag)!

But it's indeed too late now to do that.

Go for EJ 230. 72 KN Dry and 108 KN Wet.

 

[Bleh]

Go for EJ 230. 72 KN Dry and 103 KN Wet.

That's just as nonexistent as F414EPE... Hell, even the name isn't final yet b&eing called EJ2x0 "Thrust Enhancement package".

 

[IndianHawk]

That's just as nonexistent as F414EPE... Hell, even the name isn't final yet b&eing called EJ2x0 "Thrust Enhancement package".

Also f414 has batter future as it will be in service with India ( mwf / amca / tedbf) , Korea (kfx ) , and all gripen customers along with US navy for a long time.

 

[Armand2REP]

Also f414 has batter future as it will be in service with India ( mwf / amca / tedbf) , Korea (kfx ) , and all gripen customers along with US navy for a long time.

It is the best OTS solution but it is not developing India's indigenous engine development. It is making them reliant on the US which is the worst one to be dependent on.