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Karthi

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Can anyone help me ? is Prthvi 3 and Dhanush the same system.
 

porky_kicker

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2nd picture is the combined VTM ( velocity trimming module ) and RCS ( reaction control system ) of the Prithvi payload section.

Note the numerous fuel lines terminating in the sides.

Prthvi engine bay.jpg


Go through the post below , which I wrote long time back if you want for reference.

It was labelled as interstage explicitly. So no question arises of it being an upper-stage attitude-control/velocity-trim module.

Also RCS / VTM thrusters produce small amount of thrusts and hence incorporate small sized thrusters. Check this thread for the pics of the same ie thrusters for RCS / VTM .

The interstage on the other hand has oversized holders.

And for reference

Agni 3 RCS and VTM module , payload bus sits on it.

View attachment 42032

Agni 1/2 RCS and VTM module

View attachment 42033

I have marked out some of the thrusters for you

View attachment 42035
Addk.jpg


Agni 3 RCS and VTM module , payload bus sits on it.

1-16-0.jpg


Agni 1/2 RCS and VTM module

Add0.jpg


I have marked out some of the thrusters for you
 
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Bhadra

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Has army ordered it?.NO
If the Army asked to develop it and it goes ok through trial they will order it... why not .. ??

I do not know why army has not asked DODOs to develop an assault bridge for mountain streams .. how long can they keep using aluminium ladders to cross such steams..
 

Karthi

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FB_IMG_1594221966544.jpg


Cryogenic dilution refrigerator by Department of Atomic Energy's Variable Energy Cyclotron Centre(VECC).

Cooling power is provided by the heat of mixing of the Helium-3 and Helium-4 isotopes. It can provide continuous cooling to temp as low as 2 mK (-273.148°C).
VECC Achieved up to 80mK in the lab.

Dilution refrigerators are essential for applications in quantum computing (cooling computer chips), photonics and spintronics (emerging field of nanoscale electronics), condensed matter and nuclear research — and much more.

India is now the world’s eighth country to have designed a dilution refrigerator reaching 50 miliKelvin in the laboratory.
 

Karthi

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Two Stage Light Gas Gun.jpg


Two Stage Light Gas Gun of TBRL . This device can use to test various technologies like

Re-entry simulation

Validation of space shields against meteorites impact.

Hypervelocity impact of projectiles on different targets .
 

Karthi

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High power pulsed laser system.jpg


TBRL High power pulsed laser system.



Application of high power laser system is for direct laser initiation of high explosives, to study the wavelength dependence of high explosives for laser initiation, to determine the laser initiation threshold energy for various high explosives and to study the laser shock generation of metal coated glass windows or metal coated explosive substrate. This laser system is very useful to study the laser interaction with nanoparticle coated reactive thin films.
 

Chinmoy

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Cute... So we have any SAM/AAM that presently looks like this?
No.

Project Devil, Project Valiant, Project Indigo....... None succeeded. A similar missile which we used was Russian SA-2.
 

Tridev123

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IJT to go spin tests.
The success of the IJT is crucial for the future of our aerospace industry. Design houses like the ADA and NAL should not even think of futuristic projects like the AMCA if they fail with the IJT. Being able to master basic aero design and ability to correct defects in indigenously designed aircraft will lay the foundations of a competent aircraft design capability.

How can we think about 5th and 6th generation aircraft design if we do not master the science of designing an fairly basic trainer. Failure will dent our confidence.
Happy to hear that the IJT has cleared most of the hurdles with the redesign albeit taking some foreign help. We need to make the IJT a success and move on to the next generation aircraft like the AMCA, TEDBF and ORCA. The IJT could not be an albatross around the neck of our design houses.

We should explore replacing the current imported engine on the IJT with a indigenous turbofan engine. The HAL designed STFE can be used after certification. Exports are another focus area.
 

janme

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The success of the IJT is crucial for the future of our aerospace industry. Design houses like the ADA and NAL should not even think of futuristic projects like the AMCA if they fail with the IJT. Being able to master basic aero design and ability to correct defects in indigenously designed aircraft will lay the foundations of a competent aircraft design capability.

How can we think about 5th and 6th generation aircraft design if we do not master the science of designing an fairly basic trainer. Failure will dent our confidence.
Happy to hear that the IJT has cleared most of the hurdles with the redesign albeit taking some foreign help. We need to make the IJT a success and move on to the next generation aircraft like the AMCA, TEDBF and ORCA. The IJT could not be an albatross around the neck of our design houses.

We should explore replacing the current imported engine on the IJT with a indigenous turbofan engine. The HAL designed STFE can be used after certification. Exports are another focus area.
IJT and HTT40, both are HAL projects, nothing to do with ADA, IAF is as much as responsible as HAL for IJT's disaster as they chose the Russian engine which HAL did not deem fit. This fact has been conveniently buried but people in the forum atleast know this.

ORCA is a paper plane/dream which will get 0 funding.
 

Tridev123

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IJT and HTT40, both are HAL projects, nothing to do with ADA, IAF is as much as responsible as HAL for IJT's disaster as they chose the Russian engine which HAL did not deem fit. This fact has been conveniently buried but people in the forum atleast know this.

ORCA is a paper plane/dream which will get 0 funding.
HAL is also part of our aerospace industry.By stating that ADA and NAL were not participants in the design of the Sitara(IJT) you are creating the scenario that if both of them were involved an successful IJT could have been designed.

Now why was HAL forced to seek help of foreign design centers to correct deficiencies in the IJT if expertise was available in the ADA and NAL. Why didn't ADA and NAL help out HAL. After all they are all part of the Government. Shifting blame onto HAL serves no purpose. We must work in unison.

How does engine choice affect successful stall and spin test characteristics. Please elucidate. Inability to pass stall and spin tests were due to problems in the centre of gravity of the aircraft and other design issues. Would using French engines guarantee success in stall and spin tests without addressing design faults. Please provide technical proof to support your claim.
I am willing to be convinced.

About ORCA yes it is too early to predict. I would prefer going step by step forward. We should first bring the MWF(Tejas mk2) to fruition.
 

Assassin 2.0

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Now why was HAL forced to seek help of foreign design centers to correct deficiencies in the IJT if expertise was available in the ADA and NAL. Why didn't ADA and NAL help out HAL. After all they are all part of the Government. Shifting blame onto HAL serves no purpose. We must work in unison.
Why they will provide Help to HAL for free?
Most probably HAL found cheaper to consult from foreign player's rather than ADA NAl and if ADA can design a supersonic aircraft in 90s it would very funny to think that they can't build basic trainer.
Anyway competition should remain between PSU if we remove that kihichdi will become worst.
Remember leader of commiii organizations aka soviet also had multiple organization which were competition against each other.
If HAL have undertaken a basic project then it's responsibility of HAL to make it success after all funding is digested by HAL then why ADA should work on it??? 🤔
 

Tridev123

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Why they will provide Help to HAL for free?
Most probably HAL found cheaper to consult from foreign player's rather than ADA NAl and if ADA can design a supersonic aircraft in 90s it would very funny to think that they can't build basic trainer.
Anyway competition should remain between PSU if we remove that kihichdi will become worst.
Remember leader of commiii organizations aka soviet also had multiple organization which were competition against each other.
If HAL have undertaken a basic project then it's responsibility of HAL to make it success after all funding is digested by HAL then why ADA should work on it??? 🤔
Are you saying that one arm of the Government failed to support another arm of the same Government and hence the project had a serious setback. The Government and HAL paid the external consultant in dollars depleting our foreign exchange reserves when an indigenous cheaper alternative in the form of ADA and NAL was available. Reflects very poorly on the management skills of the Government and a blot on the nation.

Please remember that the LCA Tejas was designed with significant help from Dassault of France.If there had been no foreign help (consultancy) from any foreign organisation then your statement about us having fully indigenously designed an supersonic fighter would be true. Even the decades back Marut fighter design was helped by a German expert. Though we love our country it is not good to ignore reality. All countries go through this stage.Only if we understand our shortcomings can we plan to overcome them.

The IJT is not a simple commercial venture. Its success will lay one pillar of the foundation of our indigenous aerospace program. It is a project of national importance. All the technical resources available in the country should be used to ensure it succeeds.

Our quest to build our indigenous Kaveri turbofan engine is another project of national importance. You should not put the onus only on GTRE. All available resources in the country should be made available to the GTRE if it is necessary.

Our technical base in the field of aerospace is still limited and mostly confined to the public sector and Government institutions..
 

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