ADA Tejas Mark-II/Medium Weight Fighter

Ghost hale

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As usual a Google search would have helped. Epe engine contract was given in 2009. This project was supposed to be over in 2019. In GE page, it's officially labelled as F414-GE-400.
They have clearly mentioned it's a potential option for AMCA.
Moreover I pretty much remember that this engine was ground tested sometime last year end or this year end. Image was posted on twitter. I just don't remember the handle.
Did u read that link? EPE will be upgrade on F414 GE 400 as per link and document. Can u share link of EPE ground tested?
 

Trololo

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Ceramic Matrix Composite is an entire class of composite materials. GE is focusing on SiC-SiC composites. So if your question is "do we have SiC-SiC composites tech that we can apply to gas turbine engines.?", then the answer is: Not sure. In non-rotating components, such as in CFM-56 LEAP engine, maybe, if we spend some time doing R&D for it. But for use in turbine blades, defnitiely no, and not likely in the next couple of decades.


Shouldn't even be a question. Shinakereba naranai.


Not true. They have produced a Low Pressure Turbine and run it in a GE-414 engine. So its not as if they "haven't invested a dime." In fact, in CMC for hot sections alone, they have invested more than a Billion dollars over a period of decades. EPE is within their reach, only the funding is a problem for them. Similar to how Kaveri is within our reach, only funding is a problem. If they don't get funding for testing CMC blades in GE-414 EPE, they will most definitely get funding for testing CMC blades for an adaptive cycle engine (ADVENT) they are working on for their 6th generation fighters. They are clear on the strategic importance of gas turbine technology. India (the politicians) is not.
Fun fact: There are at least three Indian Americans involved in this endeavour. If GoI were Chinese, they would have paid these three Indian Americans handsomely to come back to India and work on these things here.


Dude what is the maximum airflow that MWF air intakes would even allow? 77 kg/sec? I think EPE requires some 85 kg/sec, which I suspect is more than what MWF intakes are being designed for. I am confused as to why GE-414 EPE is being discussed on MWF thread. I initially thought this was Kaveri engine thread.
Watch and weep:
 

fire starter

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I weep more because I've seen even the Chinese spending money on SiC/SiC CMCs.

Indigenous technologies have been demonstrated for
synthesis of PDMS, PCS, PIP process for fabricating C/SiC
composites and also to develop test prototypes have been
demonstrated. The mechanical and thermal properties of the
indigenous material are found to be on par with the materials
developed elsewhere. The indigenous technology initiative
efforts have also resulted in demonstration of the SiC fibre
technology. The scale down rocket nozzle divergent cone is
expected to have much better performance compared to the
C/Phenolic nozzles being used in the present rocket motors.
The PIP technology has also opened a path to develop C/
SiC composites based hot structures to replace the ablative
material-based systems. The C/SiC composite process would
become basis to fabricate SiC/SiC composites once SiC fibre
process get matured.
 

Lonewolf

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Indigenous technologies have been demonstrated for
synthesis of PDMS, PCS, PIP process for fabricating C/SiC
composites and also to develop test prototypes have been
demonstrated. The mechanical and thermal properties of the
indigenous material are found to be on par with the materials
developed elsewhere. The indigenous technology initiative
efforts have also resulted in demonstration of the SiC fibre
technology. The scale down rocket nozzle divergent cone is
expected to have much better performance compared to the
C/Phenolic nozzles being used in the present rocket motors.
The PIP technology has also opened a path to develop C/
SiC composites based hot structures to replace the ablative
material-based systems. The C/SiC composite process would
become basis to fabricate SiC/SiC composites once SiC fibre
process get matured.
Source ??


Is it possible to use in indigenous engine blades ,
 

Lonewolf

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@Karthi are we developing uptra long range range , ground based for intelligence gathering , our ocean surveillance ship radar is good ,can it be used ?
 

Lonewolf

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@Karthi are we developing uptra long range range , ground based for intelligence gathering , our ocean surveillance ship radar is good ,can it be used ?
I heard US uses it's establishment in Norway to spy on russians
 

Karthi

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@Karthi are we developing uptra long range range , ground based for intelligence gathering , our ocean surveillance ship radar is good ,can it be used ?

Not sure about Ground based Radar system . There are rumours that DRDO developing one but I think Military prefer mobile Radar systems than Ground based systems . Only DRDO HPR radar is known as ground based .
 

Ar.gaurav28

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Check the fuel consumption of RD-93 & F404.
Bro, I found this from Russian platform as they were discussing about jf17 thus according to them at 0.8 mach this will be the fuel consumption!
A5DB8B2D-5D4A-4F49-9034-680D33C657D9.png

no studies on tejas yet but comparing both engines fuel consumptions
rd93 has 0.77kg/hr whereas
f404 has 0.367kg/hr! i.e almost twice.
though,
theoretical endurance of tejas will depend on the overall drag,aspect ratio,etc!
 

Okabe Rintarou

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Bro, I found this from Russian platform as they were discussing about jf17 thus according to them at 0.8 mach this will be the fuel consumption!
View attachment 88584
no studies on tejas yet but comparing both engines fuel consumptions
rd93 has 0.77kg/hr whereas
f404 has 0.367kg/hr! i.e almost twice.
though,
theoretical endurance of tejas will depend on the overall drag,aspect ratio,etc!
This alone goes to show the power of Gas Turbine Technology.
 

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