Kaveri Engine

[Karthi]

Rotor Blade Vibration Measurement on Aero Gas Turbine Engines

Challenges in Engine Health Monitoring Instrumentation During Developmental Testing of Gas Turbine Engines

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Development of Time-Efficient Multi-hole Pressure Probe Calibration Facility

 

[Karthi]

Development of a Retro-Reflective Screen-Based Large-Field High-Speed Shadowgraph Flow Visualization Technique and Its Application to a Hydrogen-Fueled Valveless Pulsejet Engine

 

[Karthi]

High-Speed Shadowgraph Flow Visualization Studies on the Mechanism of the Onset of Screech and Its Attenuation in a Model Afterburner Test Rig

Afterburner test facility for generating screech with a frequency 2000 Hz

Near-Field Effectiveness of the Sub-Boundary Layer Vortex Generators Deployed in a Supersonic Intake

Uncontrolled intake model

Micoo vortex generator used for testing

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[Okabe Rintarou]

Posting Pictuers from few resarches with limited description, i hate typing .

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CFD Study of transonic axial flow compressor

View attachment 118309

Schematic axial flow compressor setup (NAL)


View attachment 118313

Rotor and stator geometry for this study ( NAL)

View attachment 118314

Casing treatment configuration .

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Research on Aeroelastic Instability ( Flutter) Evaluation of Transonic Compressor


View attachment 118318
Two-blade mesh domain for flutter analysis

View attachment 118321

Finite element model of first-stage rotor blade

View attachment 118324

Blade reponse pattern at different nodal diameter

View attachment 118325

Two-blade CFD case setup for flutter analysis with and without Inlet Guide Vane


View attachment 118326

Two-blade CFD case setup for flutter analysis

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Measurements of Droplet Velocity Fields in Sprays from Liquid Jets Injected in High-Speed Crossflows Using PIV.

The behavior of liquid jets in subsonic crossflows is of significant interest in propulsion systems which include gas turbine combustors, aircraft afterburners and liquid fuelled ramjets.

View attachment 118327

Experimental setup

This one seems like its for HTSE-1200.

 

[Kalkioftoday]

News on RR development techniques and aims for Tempest..



It would be interesting to hear what SAFRAN is up to with FCAS engine development.

Source:

Storm Warning Comes from UK in Form of Project Tempest | AIN

The Tempest fighter is just part of a Future Combat Air System being designed by an international team led by BAE Systems.

www.ainonline.com

That's some pretty hardcore futuristic shit from the Europeans. But the sad thing is when they work together they neither achieve the expected timeline nor the the cost, and during the mid phase of the project they start fighting with each other. Don't get me wrong but i can see 'DELAY' and 'COST OVERRUN' all over it

 

[Spitfire9]

That's some pretty hardcore futuristic shit from the Europeans. But the sad thing is when they work together they neither achieve the expected timeline nor the the cost, and during the mid phase of the project they start fighting with each other. Don't get me wrong but i can see 'DELAY' and 'COST OVERRUN' all over it

RR seem to be confident that they can address some big challenges (2,000C core temp + massive electrical power generation). Whether an ambitious new engine would ever end up in a Tempest fighter is contingent on money, I think. UK govt does not want to fund the project alone, so I guess that without Italy and Sweden being involved and funding a good part of it - which complicates things, slows things down and increases costs - Tempest will probably never get a production go ahead.

How advanced would India need its 110kN engine to be? The further ahead that RR, SAFRAN move technologically, the more inclined they would be to part with less advanced technology, wouldn't they? Enough knowhow for India to be able to design and build a 110kN engine with reasonable reliabilty, t/w ratio, sfc and overhaul intervals?

 

[Kalkioftoday]

RR seem to be confident that they can address some big challenges (2,000C core temp + massive electrical power generation). Whether an ambitious new engine would ever end up in a Tempest fighter is contingent on money, I think. UK govt does not want to fund the project alone, so I guess that without Italy and Sweden being involved and funding a good part of it - which complicates things, slows things down and increases costs - Tempest will probably never get a production go ahead.

How advanced would India need its 110kN engine to be? The further ahead that RR, SAFRAN move technologically, the more inclined they would be to part with less advanced technology, wouldn't they? Enough knowhow for India to be able to design and build a 110kN engine with reasonable reliabilty, t/w ratio, sfc and overhaul intervals?

Tempest will probably never get a production go ahead.

You know what will be funny, Brits and Tempest allies didn't even cross the first phase of the Tempest program and it's already seeing Cost and time overrun. Everyone is furious, Taxpayer, MP, Bureaucrats, RAF you name it. Meanwhile Americans are in the final stage of inducting their new 6th gen NGAD. Suddenly a big bang occures, what is this? cheeky Americans are offering Brits their new NGAD. After spending billions of pounds and getting nowhere suddenly everyone in Britain is in favour if buying american NGAD and pulling the plug on Tempest. After much argument both in media and in perliament British government finally agrees to end Tempest program and join the NGAD. RAF wants to buy atleast 120 of this new 6th gen american fighter but after buying 30 Brits have decided to buy only 50 aircraft instead of 120 aircraft they previously agreed. British government is now thinking of filling the rest of the 70 aircraft with the homemade 7th Gen 'Fempest'.
.

How advanced would India need its 110kN engine to be? The further ahead that RR, SAFRAN move technologically, the more inclined they would be to part with less advanced technology, wouldn't they? Enough knowhow for India to be able to design and build a 110kN engine with reasonable reliabilty, t/w ratio, sfc and overhaul intervals?

That's the million dollar question. No-one in DRDO or in government opening their mouth. Let's see if they give any update on this during DefExpo

 

[lcafanboy]

 

[Trololo]

You know what will be funny, Brits and Tempest allies didn't even cross the first phase of the Tempest program and it's already seeing Cost and time overrun. Everyone is furious, Taxpayer, MP, Bureaucrats, RAF you name it. Meanwhile Americans are in the final stage of inducting their new 6th gen NGAD. Suddenly a big bang occures, what is this? cheeky Americans are offering Brits their new NGAD. After spending billions of pounds and getting nowhere suddenly everyone in Britain is in favour if buying american NGAD and pulling the plug on Tempest. After much argument both in media and in perliament British government finally agrees to end Tempest program and join the NGAD. RAF wants to buy atleast 120 of this new 6th gen american fighter but after buying 30 Brits have decided to buy only 50 aircraft instead of 120 aircraft they previously agreed. British government is now thinking of filling the rest of the 70 aircraft with the homemade 7th Gen 'Fempest'.
.


That's the million dollar question. No-one in DRDO or in government opening their mouth. Let's see if they give any update on this during DefExpo

This is my take: Given the timeframe we can aim for a smaller XA-100 type engine in the F414 EPE class, by throwing a huge amount of resources at it. Thermals will be in the EPE class only, which will need good heat shield technology (we have substantial depth in that field). Electricals might improve with traditional but better aircraft gear boxes, but without the revolutionary idea of 10x power that the Tempest aims for. This engine will kill many birds with 1 stone, viz:

1. A true 5th gen variable cycle engine for the AMCA in the 110KN thrust class, with potentially a 20-25% thrust upgrade capability.
2. The absolute best engine for lightweight fighters for years to come if it fits in the LCA Mk2.
3. The absolute best engine for medium 4th gen fighters if it fits in the TEDBF.
4. Spin off product: A flat-rated conventional advanced 4th gen affordable engine in the F414 class without the variable cycle and exotic materials. It can make the LCA more affordable to nations with lower budgets without much loss in capability.
5. Spin off product: A non afterburning large turbofan for commercial aircraft. Will go on to power domestic civilian aircraft and military transports, as well as compete globally for contracts.
6. Spin off product: A solid marine gas turbine for our navy. Will free us of LM 2500 imports, and possibly MT30.
7. Spin off product: Materials and knowhow/knowwhy from the engine core research will help with a domestic turboprop engine, much before the jet engine is completed itself. Will enable domestic industry to build turboprop airliners and transports, as well as compete in the global turboprop market.
8. Spin off research activity: Deep expertise in materials science which can be extended to other domains as needed.
9. Geopolitical advantage: Unhook the ITAR and sanctions shadow from our domestic programs.
10. Geopolitical advantage: Ability to export our products to countries which are ITAR wary.
11. Geopolitical advantage: Ability to export our products to countries without the sale getting blocked (see how US blocked T129 sale to Pak by sanctioning the engines).
12. Product development advantage: This engine will lay the base for a 200KN+ engine for our heavy combat platforms, which can incorporate futuristic items like extremely high power generation capability, 2000KN turbine temperature, etc, and this can be used to improve upon the existing engine.

 

[Spitfire9]

Would be great for many reasons but how many years to get to certification? US has taken a long time to make and test an adaptive engine and they started with a massive knowhow lead over India,

Wouldn't it be better to develop a less ambitious engine (=lower risk + lower cost) for AMCA Mk2 which could be derated for use in Tejas Mk2/TEDBF/possible ORCA? That would bring sovereignty over Indian fighter production and free India to choose customers at will. An R&D programme for a much more advanced indigenous engine for the 2040's could run in parallel (resources allowing).

 

[Trololo]

Would be great for many reasons but how many years to get to certification? US has taken a long time to make and test an adaptive engine and they started with a massive knowhow lead over India,

Wouldn't it be better to develop a less ambitious engine (=lower risk + lower cost) for AMCA Mk2 which could be derated for use in Tejas Mk2/TEDBF/possible ORCA? That would bring sovereignty over Indian fighter production and free India to choose customers at will. An R&D programme for a much more advanced indigenous engine for the 2040's could run in parallel (resources allowing).

My assumption above is that hot materials apart we have the capability and resources to design an advnaced engine. GTRE and academic institutes have apparently done design studies for a VCE. But yes, from an extremely pragmatic PoV its better to build a regular F414 type engine and gain sovereignty over our programs, which can then be used to take things forward with better items.

 

[Vamsi]

My assumption above is that hot materials apart we have the capability and resources to design an advnaced engine. GTRE and academic institutes have apparently done design studies for a VCE. But yes, from an extremely pragmatic PoV its better to build a regular F414 type engine and gain sovereignty over our programs, which can then be used to take things forward with better items.

Kaveri may be already flat rated and Variable Cycle engine

 

[shuvo@y2k10]

What happened to the fighter plane that vstol jockey was making in his own for IAF ?

 

[FalconZero]

What happened to the fighter plane that vstol jockey was making in his own for IAF ?

Probably ran out of weed.

 

[MonaLazy]

Probably ran out of weed.

Genius! Best propulsion for an aircraft- since natural state of plane & pilot will be to "stay high"- only need to be fitted with ice cold water jet dispensers to bring the pilot to his senses and the plane to ground.

 

[tsunami]

Probably ran out of weed.

At 1 point he claimed that he gave a presentation to RM and HAL guys were jealous of him so rejected his idea. (Obviously after he defeated him debate over it)

 

[no smoking]

Kaveri may be already flat rated and Variable Cycle engine

View attachment 118552

1. Flat rate is basically a design to protect the jet engine during climbing or descending. So, it has been used in civilian jet engine to save cost. In military sector, pilots want his jet to climb or dive as fast as it can. Besides, with FADEC, military engine can do the same. But no one choose to do so.
2. Kaveri's variable cycle engine is not the general concept of "variable cycle engine". Generally, the variable cycle engine is performing different working styles (turbofan and turbojet) in different speed range by changing its internal structure. This kind of engine is expected improve its fuel consumption by >30%. The Kaveri engine, however, is just like any other modern 3rd generation turbofan engines, "improving" its performance by changing fuel injection or air inflow, etc. The effect? <5%.

 

[Karthi]

1. Flat rate is basically a design to protect the jet engine during climbing or descending. So, it has been used in civilian jet engine to save cost. In military sector, pilots want his jet to climb or dive as fast as it can. Besides, with FADEC, military engine can do the same. But no one choose to do so.
2. Kaveri's variable cycle engine is not the general concept of "variable cycle engine". Generally, the variable cycle engine is performing different working styles (turbofan and turbojet) in different speed range by changing its internal structure. This kind of engine is expected improve its fuel consumption by >30%. The Kaveri engine, however, is just like any other modern 3rd generation turbofan engines, "improving" its performance by changing fuel injection or air inflow, etc. The effect? <5%.

I have posted the pictures of Variable geometry actuation system of Kaveri engine. Which makes Kaveri Engine a true Variable Geometry engine .

Posting few details of it.


Kaveri Variable Geometry Actuation System is Fuel operated servocontrolled actuation system used to control the incidence angle of HP Compressor blades

It has three main components
i. Electro-Hydraulic Servo Valve (EHSV)
ii. Master Actuator
iii. Slave Actuator

Pictures of VGAS

GTRE can make it work for other parts also , technical difficulties are obvious , but can develop and who knows they already developed it .

 

[no smoking]

I have posted the pictures of Variable geometry actuation system of Kaveri engine. Which makes Kaveri Engine a true Variable Geometry engine .

Kaveri Variable Geometry Actuation System is Fuel operated servocontrolled actuation system used to control the incidence angle of HP Compressor blades

We are talking about variable cycle engine, not variable geometry engine.

 

[Karthi]

stydy of Impact of spherical bodies on aero engine compnents .

compressed airgun setup for the study.

deformation of component by spherical object at 70m/s .