DRDO, PSU and Private Defence Sector News

[Karthi]

Garibo ki bhasha me samjhao bhai.... how good it is for weaponization.

Bro I m weak in Hindi , this bitter Coil can produce extremely strong magnetic fields . These fields can be used in Electromagnetic Rail guns to fire the projectiles to long ranges at extreme high velocity.

 

[tsunami]

Bro I m weak in Hindi , this bitter Coil can produce extremely strong magnetic fields . These fields can be used in Electromagnetic Rail guns to fire the projectiles to long ranges at extreme high velocity.

Sorry for that... I just said I don't understand much technicalitys... just wanted to understand how good and comparable weapon we can create out of this. I understand rail guns fire projectiles at high speed over long ranges. Wanted to understand what mass at what speed and at what distance. Where do we stand in comparison to global comparable systems.

 

[Karthi]

Sorry for that... I just said I don't understand much technicalitys... just wanted to understand how good and comparable weapon we can create out of this. I understand rail guns fire projectiles at high speed over long ranges. Wanted to understand what mass at what speed and at what distance. Where do we stand in comparison to global comparable systems.

The system is under development we only know the capabilities when the product completed , DRDO envisage similar performance like US Rail guns .

 

[Karthi]

DRDO initiated the upgrade of RWR Tarang and RW 118 Dhruti. Decided to develop Digital Instantaneous Frequency Measurement (DIFM) unit for Tarang & R118 RWR.


The DIFM will be able to extract digital 12-bit resolution from RF input received through the Front End Amplifier (FEA) of TARANG / R118 RWR system. The DIFM is a DFD (Digital Frequency Discriminator) and its purpose is to measure the frequency of incoming radar signals.


Digital Instantaneous Frequency Measurement (DIFM) devices are the essential parts of any ESM, ELINT, and RWR receiver.

 

[fire starter]

DRDO SSPL's Gallium Nitride based High electron mobility transistor (HEMT)...
Uses silicon as substrate and layer of undoped GaN n Almunium-Gallium Arbitarry alloy, n the buffer(2-d electron gas is stronger than GaAr based configuration...GaN bffr wth 0.25 μm already bn achieved.

 

[Pazhassiraja]

Bitter Coil For India's Magnetic Rail Gun.




View attachment 46566



Bitter coil configuration with the current flow directions in the components


View attachment 46567



Bitter Coil current & field distribution analysis using static analysis. 150 kA Pulsed current is considered for analysis.

View attachment 46568

Bitter coil components and assembly

View attachment 46569


Bitter Coil of 24 µH at 400 Hz. This has 8 mΩ DC resistance and weight of 68 kg.




The coil under development was designed with circular disks made from sheet metal of copper or copper alloys. The structure is found to be simple in construction. The Bitter discs used are of considerably broad size with large surface area. This results in the reduction of stress concentration, preventing structural failure. It is having other advantage of adjusting the inductance by varying the number of bitter plates. The assembly involves only nut-bolt arrangement and hence the process of assembling and dis- assembling is easy. Also it does not involve sophisticated machining or winding/ twisting of thick metallic blocks.

Bitter discs are to be separated by suitable insulator. As the parallel discs are carrying currents of peak value of 150 kA in the same direction, the insulator plates introduced between them experience tremendous compressive force. Insulator material is suitably selected so as to survive such compressive stress. Along with that it should be ensured that it should sustain disc-to disc potential difference, without leading to voltage breakdown.

Where is this research happening? Can you upload any pdf document of the same? Also can you explain why is it called 'bitter coil'?

 

[Karthi]

Where is this research happening? Can you upload any pdf document of the same? Also can you explain why is it called 'bitter coil'?

Let me search , this is in.my Memory card For last Four months , just uploaded it today . There are a lot of pics and documents in my disk I will upload if I found it , deleted some to release memory .


This kind of Solenoids developed by a scientist whose name is Bitter that's why it called bitter Coils

 

[Bajirao]

The system is under development we only know the capabilities when the product completed , DRDO envisage similar performance like US Rail guns .

U.s. already lost hope on e.m. railgun.after deploying them in real world ,u.s. navy observed that there are some technical issue that's very difficult to solve and even if those problem solved,still not tacticaly viable for warfare...but it will be used for e.m. luncher system for aircrafts from aircraft career..

 

[Suryavanshi]

U.s. already lost hope on e.m. railgun.after deploying them in real world ,u.s. navy observed that there are some technical issue that's very difficult to solve and even if those problem solved,still not tacticaly viable for warfare...but it will be used for e.m. luncher system for aircrafts from aircraft career..

U gotta give a huge surge of current to rail guns to generate a propelling magnetic field, that can be done only with a capacitor in Rail Guns case a super capacitor. With a single charge u can fire a Rail Gun only once after that it'll take between hours to days for recharge. Ideally u will need a Rail gun to fire multiple rounds in quick succession for it to be considered as a replacement for conventional guns.

Luckily Indian government is serious about this stuff, two of my professors were working on super capacitor.

 

[Suryavanshi]

I consider Rail guns to be a more lethal wepaon than Hypersonic missile. Imagine a barrage of 17 mach projectile approaching a enemy base, no amount of radar counter measure bullshit can defend u.
Just the raw kinetics energy will fuck up any amount of armour.

The only thing Comparable to this is even more Cynical US project ROD OF GOD.

Dropping Speeding tungsten from the sky and hit u with the force of Nuclear explosion.

Imagine destroying a paki mechanized base or a air force base with a single hit.

 

[BangaliBabu]

I consider Rail guns to be a more lethal wepaon than Hypersonic missile. Imagine a barrage of 17 mach projectile approaching a enemy base, no amount of radar counter measure bullshit can defend u.
Just the raw kinetics energy will fuck up any amount of armour.

The only thing Comparable to this is even more Cynical US project ROD OF GOD.

Dropping Speeding tungsten from the sky and hit u with the force of Nuclear explosion.

Imagine destroying a paki mechanized base or a air force base with a single hit.

not a feasible project..... and moreover nobody will like the weaponisation of space (atleast for now)

 

[vampyrbladez]

Coronavirus has caused a cut of 15-20 % in capital expenditure. In extreme case may cause upto 40% cut for fiscal 2020-21.

Focus on procurements to be on domestic industry for immediate future.

 

[vampyrbladez]

Govt to make payments to foreign vendors, tells defence PSUs to restart work.


The lockdown and its economic toll will not impact committed liabilities that have been budgeted for the armed forces for programs like the Rafale fighter jet deal and the S400 air defence systems. India is also looking at quickly ramping up local.

By Manu Pubby, ET Bureau | Apr 30, 2020, 08.28 AM IST

NEW DELHI: India will honour payments for ongoing defence procurements to be made to foreign vendors but new acquisitions could get slightly delayed as the government has put in place several expense limitations, even as plans are being put in place to resume operations by defence public sector units (PSU).

The lockdown and its economic toll will not impact committed liabilities that have been budgeted for the armed forces for programs like the Rafale fighter jet deal and the S400 air defence systems, sources told ET.

India is also looking at quickly ramping up local defence production, with defence minister Rajnath Singh directing all PSUs to prepare contingency plans for resumption of operations and make up for lost working time at the earliest.

While there is a fear that PSUs and government-owned shipyards that have ongoing programs could see delayed payments because of the restrictions, the minister has said tPSUs and the private defence industry could `play a major role in the economic revival’ of the nation.

On future procurements that have been in the pipeline and were expected to be signed in the coming weeks, sources said, there could be some delays but there are no indications yet that the overall budget would be curtailed for necessary purchases. Among the programs that were expected to be inked in the coming months was the Rs 38,000 crore project to build 83 Tejas Mk1A aircraft by Hindustan Aeronautics Limited. This program has been cleared by the defence ministry but still awaits a nod from the Cabinet Committee on Security.

https://m.economictimes.com/news/de...&utm_campaign=cppst&__twitter_impression=true

 

[fire starter]

PROJECT Underway by the Bhel...
30mm Naval Surface Gun with EOFCS (MoD RFP)
High accuracy and effectiveness for day and night operations
Main armament for small size vessels
Suitable for NATO std 30mmx173 ammunition family .Bi-axial stabilized NSG(EOD and Gun) .

+
Fire control functions with the help of EOD and FCS(Ship)
An Electro-Optic Device (EOD) with viewing devices fully stabilized in elevation and azimuth axes
ROF: More than 200 rds/min
Weight: less than 2000 Kg
Maximum effective Range 3Km+

 

[vampyrbladez]

PROJECT Underway by the Bhel...
30mm Naval Surface Gun with EOFCS (MoD RFP)
High accuracy and effectiveness for day and night operations
Main armament for small size vessels
Suitable for NATO std 30mmx173 ammunition family .Bi-axial stabilized NSG(EOD and Gun) .

+
Fire control functions with the help of EOD and FCS(Ship)
An Electro-Optic Device (EOD) with viewing devices fully stabilized in elevation and azimuth axes
ROF: More than 200 rds/min
Weight: less than 2000 Kg
Maximum effective Range 3Km+
View attachment 46658

 

[fire starter]

there is one more project of 130mm gun if I am not wrong.

 

[Aaj ka hero]

there is one more project of 130mm gun if I am not wrong.

Post it, dude then.
Becuase it is the ice over the paana thing.
If I am not wrong it might be based on russia one.

 

[Holy Triad]

Cross posting from wuhan thread


Microwave steriliser to disintegrate novel Coronavirus



https://pib.gov.in/PressReleseDetailm.aspx?PRID=1619643#.XqrRdt4uY8x.twitter

 

[Holy Triad]

Towards providing drugs for Coronavirus patients in India, CSIR has identified the top 25 drugs/drug candidates for repurposing. Among these top 25 drugs, Favipiravir a broad-spectrum inhibitor of viral RNA polymerase has emerged as one of the most promising drugs.



+Favipiravir was developed by Fujifilm Toyama Chemical Ltd., and is an approved treatment for common influenza and is marketed in Russia, China, and Japan.




CSIR-IICT Hyderabad, has transferred a cost-effective synthetic process for making Favipiravir along with a requisite amount of API to Cipla, which will launch it in India as Ciplenza post limited trials & DGCI approval. Favipiravir has apparently shown promise.

 

[Karthi]

AESA based Ku band Seeker for various Missiles .