DRDO, PSU and Private Defence Sector News

[NoobWannaLearn]

 

[arnabmit]

And this is how you learn to land a helicopter atop a ship at sea, pitching up and down and side to side.

 

[Bhaubai]

 

[patriots]

Aksha prime improvement s over akash
1.360 degree coverage
2.high altitude operation s
3 .rf seeker
4.reduced foot print
Earlier it was said Akash has 260 degree coverage
High altitude operation s means now it can be stationed in high altitude areas
This article also says akash can Target high flying objects,high altitude
Means earlier it was 18 km might be more for akash prime

 

[thebakofbakchod]

Is Akash NG still not ready yet? Why order prime when NG is superior as claimed?

 

[ezsasa]

Aksha prime improvement s over akash
1.360 degree coverage
2.high altitude operation s
3 .rf seeker
4.reduced foot print
Earlier it was said Akash has 260 degree coverage
High altitude operation s means now it can be stationed in high altitude areas
This article also says akash can Target high flying objects,high altitude
Means earlier it was 18 km might be more for akash prime
View attachment 211313

looks like this the same order that BDL got in Mar 23, BEL is announcing their work share.

 

[Fatalis]

Aksha prime improvement s over akash
1.360 degree coverage
2.high altitude operation s
3 .rf seeker
4.reduced foot print
Earlier it was said Akash has 260 degree coverage
High altitude operation s means now it can be stationed in high altitude areas
This article also says akash can Target high flying objects,high altitude
Means earlier it was 18 km might be more for akash prime
View attachment 211313

It will be interesting to see how both the systems - Akash and Akash-NG will be operated together.

 

[johnj]

Is there is any thread for 6th gen fighter -
UK Industry Reveals New Technologies for Next Generation Flying Combat Air Demonstrator

“It’s now 40 years since our people led the demonstrator aircraft programme which gave birth to Typhoon and the work we’re doing today is another once-in-a-generation opportunity to write the next chapter in aviation history. Right across the Tempest programme we’re using digital techniques and innovative design and engineering methods, to ensure we can deliver Tempest in service by 2035. We already have 1,000 people involved in this programme across UK industry and the supply chain, with young apprentices and graduates working alongside some of our most experienced engineers. This work will continue to act as a beacon, attracting the very best talent and experience to pass on to future generations of engineers needed for the UK to remain an industry leader in defence and aerospace capability,” Neil Strang, Tempest Programme Director, BAE Systems said.

looks like 6th gen enter service before Indian 5th gen

 

[Tvashtr8202]

 

[arnabmit]

Interesting... Autogyro with fixed wings... Lightweight long endurance platform

 

[NoobWannaLearn]

 

[NoobWannaLearn]

Interesting... Autogyro with fixed wings... Lightweight long endurance platform
View attachment 211368
View attachment 211369

By l&t?

 

[NoobWannaLearn]

 

[Arihant Roy]

AL31FP mai Russians charged us exorbitant money for translating the ToT documents from Russian to English.
Cost of wrenches was in lakhs, the entire titanium HAD to be imported from Russia.

Dont even start about Russian TOT

I can't comment on the translation part because I haven't heard the concerned people talking about it explicitly but as far as tech transfer is concerned , UEC and NPO Saturn have held up their part of the deal and HAL Koraput has also done an excellent job is absorbing the know why and know how.

Coming to titanium, yes Ti alloy ingots,billets are imported from Russia as raw material. One of the reasons we don't produce them in country is because of the limited usage of such ingots which won't justify setting up a greenfield plant. Let alone making a profit, the enterprise won't even be able to break even and recover the set up costs.

Since I have talked a lot about titanium , let me add some more. Ti alloys are used in the IGV which are variable, the first four LPC stages( both stator and rotor) and the first HPC stage. It is supported by ball bearing in front and roller bearing at back and has a 3.5:1 . The disc to which the blades are attached is made from high speed carbide steel.



HPC has a compression ratio of 6.6:1. Only the first three HPC stators are variable. The other 6 stators are fixed. Leaving the first stage, the blades of the 8 stages are made from Nickel based alloys. The discs are made from carbide steel.

Intermediate casing supports the LPC and HPC casing and is also a primary load bearing element of the entire engine. It is through this casing that the engine is attached to the airframe. Central bevel drive is placed here. Its manufactured again from Nickel based alloys.


Now the main part. Everyone is talking about the GE F414 deal and the associated tech transfer. The key buzz word is single crystal turbine blades.

Well let me say. Besides DMRL which has developed this tech indigenously, HAL Koraput Sukhoi engine division also makes single crystal HPT blades for the AL-31FP. This was part of the tech transfer from Russia. Investment casting is used in this process with ceramic/urea moulds.

Discs of LPC,HPC,LPT and HPT are made with isothermal forging .

Investment casting produces ultra high finish and further machining or profiling isn't required for the turbine blades. Its an intricate process comprising of core mass preparation, core inject from die,levelling of core, centring of core, pattern making and assembly,ceramic coating, de waxing, calcination and metal pouring, cooling, knock out and cutting,leaching in KF12 and KF14 alkyl solution followed by heating to remove central core.


What GE promises to transfer to us today has already been transferred by the Russians more than a decade back and this was part of the original deal signed in 2004.

 

[Bleh]

The first Consignment of Indigenously designed and developed 7.62 X 51 mm IAR handed over to CRPF by Rifle Factory Ishapore

Hope someday day they. Will be able to meet. Army recruitment sView attachment 210204

2022 pic ... Why are they repeating now?

Mku can produce them they have the capacity

If that was a ballistic glass & the product made to resist 7.62 it'd have been a very cool helmet.

 

[Fatalis]

I know we should not compare anything but man this looks awesome.

 

[Photon]

I know we should not compare anything but man this looks awesome.

View attachment 211421

I frequently see "Jelcz" in roads, very good vehicle, even it's ordinary troop transport version also really nice, Not counting rebranded Czech Tetra but we should give more space to Tata LPTA like polish giving priority to Jelcz chassis for all their equipments..

 

[NoobWannaLearn]

 

[Fatalis]

 

[Bleh]

These ice-cream seller are making me simp for a effing 60s Patton tank...and we still have not even though of substantially upgrading our T-72/90 fleet.

View attachment 210460

Granted it'll be very capital intensive, would require years...but atleast show some will, vision. Atleast announce a Make-II project for it

Ahem...ahem...5 tonnes lighter actually
View attachment 210468
The only flaw I find in this system is that very graceful turret shot trap...otherwise the system looks perfect to upgrade old T-72s

DRDO & CVRDE personnel should mandatorily go kiss the bums of Turkish counterparts every-morning.