Kaveri Engine

[THESIS THORON]

japanese cmc

 

[Vamsi]

have we made scb and tbc that can sustain 1900k of temp ??

the highest we can reach with the Bi-layer TBC is 1850K Max, no more than that . As of now we are at 1723K with single layer TBC.

 

[Lonewolf]

the highest we can reach with the Bi-layer TBC is 1850K Max, no more than that . As of now we are at 1723K with single layer TBC.

How did American reached 1900 + in f 22 and f35 engine without CMC ?

 

[THESIS THORON]

How did American reached 1900 + in f 22 and f35 engine without CMC ?

murican did 1900k with single tbc or dual ??

 

[Vamsi]

How did American reached 1900 + in f 22 and f35 engine without CMC ?

I don't know. May be they used better Super Alloys, Cooling Techniques, better TBC than us. After all they are the world's best in this field

 

[Lonewolf]

murican did 1900k with single tbc or dual ??

Dual

 

[THESIS THORON]

Dual

then according to vamsi we also have achived 1850k with dual tbc.

But ig that makes engine heavier

 

[Lonewolf]

then according to vamsi we also have achived 1850k with dual tbc.

But ig that makes engine heavier

I have to look again ,but they crossed 2200k with dual TBc in f135

 

[THESIS THORON]

I have to look again ,but they crossed 2200k with dual TBc in f135

imo we can also go to 1900k if the sjha tweet is true that we are able to make turbine blades of same quality as al31fp.

@Vamsi the figure you quoted of 1850k is done with directionally solidified blade or with single crystal blade ??

 

[Vamsi]

imo we can also go to 1900k if the sjha tweet is true that we are able to make turbine blades of same quality as al31fp.

@Vamsi the figure you quoted of 1850k is done with directionally solidified blade or with single crystal blade ??

1850K is not yet achieved.Its only the max possible limit when a Bi-layer TBC is used. As of now our TeT stands at 1723K with single layer TBC used on a Single Crystal Blade.

 

[Vamsi]

imo we can also go to 1900k if the sjha tweet is true that we are able to make turbine blades of same quality as al31fp.

@Vamsi the figure you quoted of 1850k is done with directionally solidified blade or with single crystal blade ??

AL-31F TeT is 1650K. We already crossed that.

 

[Vamsi]

I'm NOT a metallurgy expert, but seniors like @Chinmoy @Karthi @fire starter and others can explain.

When I started to read about SCBs, most of them that I found are made of Nickel based Super Alloys, I didn't find any of them made of Titanium superalloys. I only found Titanium alloys in Fans and Compressors.

Are Titanium based superalloys unsuitable to be used in Turbine blades?
Is it because of cost or because of difficulty in manufacturing them ?

 

[Kalkioftoday]

I'm NOT a metallurgy expert, but seniors like @Chinmoy @Karthi @fire starter and others can explain.

When I started to read about SCBs, most of them that I found are made of Nickel based Super Alloys, I didn't find any of them made of Titanium superalloys. I only found Titanium alloys in Fans and Compressors.

Are Titanium based superalloys unsuitable to be used in Turbine blades?
Is it because of cost or because of difficulty in manufacturing them ?

Hey, i found something- https://aviation.stackexchange.com/...t-made-out-of-titanium-only-compressor-blades

 

[ersakthivel]

AL-31F TeT is 1650K. We already crossed that.

SO in future can we use our own SCBs with TBC in AL31 engine to make them more reliable, with longer meantime between overhauls?

 

[Lonewolf]

SO in future can we use our own SCBs with TBC in AL31 engine to make them more reliable, with longer meantime between overhauls?

Depends , if rukies allow

 

[ersakthivel]

Depends , if rukies allow

ofcourse, Russians hold the IP rights.

My query is do we hv better tech to make a better quality Al31 with our own SCBs? & TBC?

Are we technically capable?

 

[Lonewolf]

ofcourse, Russians hold the IP rights.

My query is do we hv better tech to make a better quality Al31 with our own SCBs? & TBC?

Are we technically capable?

Yup , already we exceeded in this tech

 

[THESIS THORON]

Yup , already we exceeded in this tech

if we reverse engineer then it is okay, but if we go to make 130-140kn tvc engine then we might encounter problems in

1. afterburner
2. tvc nozzle

 

[Vamsi]

ofcourse, Russians hold the IP rights.

My query is do we hv better tech to make a better quality Al31 with our own SCBs? & TBC?

Are we technically capable?

With today's tech we can develop an engine with 120KN+ thrust with the dimensions & weight category of AL-31F for sure and the rumored Ganga engine falls in the above category, but what we really need for AMCA is a 110KN engine within size of F414, which is really really difficult to achieve and I honestly don't what our capabilities to achieve it.

 

[Ajax01]

We have a TBC that is being researched which has been thermal shock tested at 1800 Celsius for 48 cycles.