Turkish defense industry news updates

[Okabe Rintarou]

View attachment 116638
Blisk fan.

https://www.researchgate.net/publication/347528341_Linear_Friction_Welding_of_Ni-Co-Cr_Superalloy_for_Blisk_Assembly

Nice to see that GTRE is researching this. https://www.researchgate.net/profile/Vijay-Petley-2
Lets see how long it takes them.

 

[Vamsi]

View attachment 116638
Blisk fan.

https://www.researchgate.net/publication/347528341_Linear_Friction_Welding_of_Ni-Co-Cr_Superalloy_for_Blisk_Assembly

It's for dry Kaveri right ??

 

[fire starter]

It's for dry Kaveri right ??

Yes and it is having lot of growth potential.

 

[Okabe Rintarou]

Yes and it is having lot of growth potential.
View attachment 116642

Source of this pic? Looks like part of a RFI. Seems like GTRE is inviting a foreign partner to form JV for this.

 

[fire starter]

Source of this pic? Looks like part of a RFI. Seems like GTRE is inviting a foreign partner to form JV for this.

Actually its A very old RFI for the new fan which is currently being used in dry variant.

 

[Okabe Rintarou]

Actually its A very old RFI for the new fan which is currently being used in dry variant.

But that mass flow rate is too damn high. Are we sure its for the distortion resistant fan on dry kaveri?

 

[Vamsi]

But that mass flow rate is too damn high. Are we sure its for the distortion resistant fan on dry kaveri?

It will be for both dry Kaveri & also for futuristic 110KN engine. 98-100 Kg/s mass flowrate is for 110 KN class of engines

In the above pic u can see 100 Kg/s flow rate is for 110-130KN class engines.Also note the Turbine Entry Temp for that 123 KN engine ,it is 1723K. Current Kaveri is also at that level with DMD4 DS blades, I'm pretty much sure our DMS4 SCB with TBC can easily reach more than 1900K TeT. As I always said in the Kaveri thread, we have the necessary building blocks for 110KN engine like Intake Fan, Combustion chamber, SCB ,TBC. Only thing we lag is in AB tech. The only thing we need with RR is their help in design of the engine & testing ,so that we won't have any design flaw like in Kaveri.

 

[UnderFingy]

Can we post these on the Kaveri thread? That thread has been dry of late.

 

[Vamsi]

Can we post these on the Kaveri thread? That thread has been dry of late.

Yep ,plz move them to that thread

 

[Okabe Rintarou]

It will be for both dry Kaveri & also for futuristic 110KN engine. 98-100 Kg/s mass flowrate is for 110 KN class of engines
View attachment 116658
In the above pic u can see 100 Kg/s flow rate is for 110-130KN class engines

Nope. That is if we don't upgrade the tech. We need to be aiming to achieve pressure ratios above 30:1 and we'll be able to achieve 110kN thrust with just 78 kg/s mass flow rate. That is what the engines like EJ200 and GE-414 do.

With 100 kg/s mass flow rate, you get AL-41 class of engine.

 

[Vamsi]

Nope. That is if we don't upgrade the tech. We need to be aiming to achieve pressure ratios above 30:1 and we'll be able to achieve 110kN thrust with just 78 kg/s mass flow rate. That is what the engines like EJ200 and GE-414 do.

With 100 kg/s mass flow rate, you get AL-41 class of engine.

If we want to increase pressure ratio above 30 with 78kg/s mass flow rate , then the TeT must be greater than 2000K, I don't think we reached that level yet. But we can reach 110KN thrust with 100Kg/s mass flow rate, 25 pressure ratio and current level of SCB tech.

 

[Okabe Rintarou]

If we want to increase pressure ratio above 30 with 78kg/s mass flow rate , then the TeT must be greater than 2000K, I don't think we reached that level yet. But we can reach 110KN thrust with 100Kg/s mass flow rate, 25 pressure ratio and current level of SCB tech.

That decreases the critical parameter: Thrust to weight ratio. We need that to be around 9 to 10. This is what the entire challenge is. Our planes AMCA, LCA, etc can't take a 100 kg/s engine in them, it would be too thick.

 

[Vamsi]

That decreases the critical parameter: Thrust to weight ratio. We need that to be around 9 to 10. This is what the entire challenge is. Our planes AMCA, LCA, etc can't take a 100 kg/s engine in them, it would be too thick.

Do you mean the dimensions of the 100Kg/s engine will be similar to that of AL-31

 

[Okabe Rintarou]

Do you mean the dimensions of the 100Kg/s engine will be similar to that of AL-31

With current tech, yes. Almost as big as that.

 

[Okabe Rintarou]

Do you mean the dimensions of the 100Kg/s engine will be similar to that of AL-31

Look at GE-414 INS6 we are using on MWF. Its got a thrust to weight of 9:1, pressure ratio of 30:1, mass flow rate of 78 kg/s and a wet thrust of 98kN.
And we want a 110kN engine in the final indigenous AMCA engine by 2035. For that maybe they increase the mass flow rate to 85-90 kg/s, but no way are they going to something as high as 100.

 

[Vamsi]

With current tech, yes. Almost as big as that.

But they are using the same Intake fan in dry Kaveri na??

 

[Okabe Rintarou]

But they are using the same Intake fan in dry Kaveri na??

No. We don't know that for sure.

 

[Vamsi]

Look at GE-414 INS6 we are using on MWF. Its got a thrust to weight of 9:1, pressure ratio of 30:1, mass flow rate of 78 kg/s and a wet thrust of 98kN.
And we want a 110kN engine in the final indigenous AMCA engine by 2035. For that maybe they increase the mass flow rate to 85-90 kg/s, but no way are they going to something as high as 100.

Do you know what is the TeT of F414 ? Few years back I read that our DMS4 blade is better than the Rene6 blade used in F414. But I don't know how true it is??

 

[fire starter]

No. We don't know that for sure.

Yes but it has been down rated According to current specs.

 

[Vamsi]

Yes but it has been down rated According to current specs.
View attachment 116661

Yep, both are same, but they reduced pressure ratio from 5:1 to 3.4:1 here