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Vamsi

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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
cu5Z2A1.png

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.
 
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UnderFingy

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

Okabe Rintarou

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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

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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

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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. :megusta:
 

Vamsi

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

Okabe Rintarou

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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

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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??
 

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