DRDO, PSU and Private Defence Sector News

[Chinmoy]

Super-stallion engine is indigenous, has more power but not sure why still we use TATRA and repeat orders for it, TATRA 815 is indeed good but Super-stallion also serving and equally gud or for TATA's LPTA.

How strong is AL Super Stallion engine in respect to TATRA?

 

[Arihant Roy]

This is the no 2 article in the three part series by Dr Anantha Krishnan M of Tarmak 007 .

He sheds light on the developmental challenges , the various technologies developed and what changes were incorporated in the cruise and launch vehicle after the first test.

https://www.onmanorama.com/news/nat...hypersonic.amp.html?__twitter_impression=true

Some points to note.

1. The scientists associated with this project carried out extensive tests on the thermo structural dynamics of both the cruise and launch vehicles , static and dynamic tests of the upper panel separation mechanism, payload ejection for the better part a decade.

The flight envelope of the Agni 1 booster used for this test is distinctly different than when it is used as a ballistic missile. I reckon it has more to do with extended horizontal flight for a good period of time through the dense parts of the atmosphere which imposes additional thermal loads on the booster.

2. Extensive resonance testing were carried out for the cruise and launch vehicle combination to identify and validate the vehicle dynamics
Excessive Vibration levels can make or break a mission by imposing additional aerodynamic loads and stresses on the vehicles. Remember The Martian .

3. The people want the cruise vehicle aka HSTDV to cruise for a distance of 2000 kms. That's the intended target for range. To be covered in 16 minutes . This will be awesome if it can be achieved. I will even be happy for 1500-1600 km range .

4. The actual hardware realisation phase began in 2016 .

5. Extensive thermo aerodynamics studies were carried out on cruise vehicle flow path, intake design, single expansion ramp nozzle, engine flow path, combustors ,etc.

6. After the first test, the scientists and engineers changed a portion of airframe section based on its previous dynamic behaviour. They modified the ejection mechanism and panel seperation scheme too . The first test proved valuable insight on where and how to improve further . The changes were then proved through resonance testing of the integrated vehicles.

7. Thermal barrier coatings have been developed exclusively for use on HSTDV. Besides materials and alloys were properly chosen to cope with the enormous thermal tests and still maintain its structural integrity .

Establishing cost effective production processes with a high QA/QC standard for these various alloys and ceramics will be the next big challenge.

Materials is one side of the coin. The other side is manufacturing them in bulk in a cheap manner buy while maintaining the correct quality and dimensional accuracies. This part is even harder than most of us think.

 

[NAMICA]

What happened to avatar does any body know?

 

[NAMICA]

There were many proposed projects such as MKV, seeker on chip, navigation on chip etc.

 

[Arihant Roy]

What happened to avatar does any body know?

Don't know the exact status of the project but technologies proved out in HSTDV particularly the scramjet propulsion will be used in it.

HSTDV is an important program which will feed into a variety of upcoming projects. So if we can achieve that 2000 km range. That is Bangalore to Delhi in 16 minutes, we have already got half of the job done for future platforms and projects be it TSTO or OSTO or a hypersonic cruise missile which will be based on hSTDV itself .

 

[NAMICA]

Can AD 2 used for taking down satellites just like SM3.
can we convert ASAT to take down missiles in mid course phase?
@Arihant Roy

 

[NAMICA]

Don't know the exact status of the project but technologies proved out in HSTDV particularly the scramjet propulsion will be used in it.

HSTDV is an important program which will feed into a variety of upcoming projects. So if we can achieve that 2000 km range. That is Bangalore to Delhi in 16 minutes, we have already got half of the job done for future platforms and projects be it TSTO or OSTO or a hypersonic cruise missile which will be based on hSTDV itself .

Well avatar is very different project it is basically our SR 72.

 

[porky_kicker]

HSTDV TEL is interesting , new boxy type enclosures at the sides compared to usual Indian TELs

One can argue for the sake of argument , that having a dedicated TEL designed specifically for HSTDV points towards the intent to operationalise HSTDV as a weapon system ( contrary to the publically published intent of its use as a technology demonstrator ).

 

[Suryavanshi]

HSTDV TEL is interesting , new boxy type enclosures at the sides compared to usual Indian TELs

View attachment 67231

One can argue for the sake of argument , that having a dedicated TEL designed specifically for HSTDV points towards the intent to operationalise HSTDV as a weapon system ( contrary to the publically published intent of its use as a technology demonstrator ).

OF course keeping a weapon in nascent stage will be Nehruvian era blunder, RAND group is all for proliferation of Hypersonic weapons, if we manage to gain ground on this tech we should consider export to non RAND signatories.

 

[porky_kicker]

OF course keeping a weapon in nascent stage will be Nehruvian era blunder, RAND group is all for proliferation of Hypersonic weapons, if we manage to gain ground on this tech we should consider export to non RAND signatories.

Yes

 

[Arihant Roy]

Can AD 2 used for taking down satellites just like SM3.
can we convert ASAT to take down missiles in mid course phase?
@Arihant Roy

Yes. AD-2 has a KKV just like SM-3. Ad-2 can take out IMINT sats especially sar and eo imagery sat in low earth orbits . But there will be some constraints in the engagement envelope . Like the interceptor will have to be placed in the path or a certain zone to be able to effect the intercept .

But having said that, yes it compares favorably with SM-3 blk 1b . SM-3 Blk 2A may be a bit better .

Later AD-2 will undergo spiral improvements to its solid stages as well as the kill vehicle which will help it keep up with evolving threats .

 

[Arihant Roy]

A meme meant for the BMD fans and nerds. It's on the US BMD architecture .

 

[NAMICA]

 

[Dessert Storm]

 

[Akula]

 

[Holy Triad]

Anantha krishnan posted this image in his Twitter account n immediately deleted it for some reason,

@mods I'll delete it if you think its too "revealing"

Spoiler: Hstdv

Edit: Ah,never mind..

He reposted it again

 

[fire starter]

p18 destroyer.

 

[flanker99]

p18 destroyer.

These will be uber expensive.Navy will need numbers to counter plan.

 

[Akula]

These will be uber expensive.Navy will need numbers to counter plan.

We need more P-15B destroyers to increase the numbers. The problem Indian ship building face is that both construction and procurement don't work parallel to each other.

 

[NAMICA]

Anantha krishnan posted this image in his Twitter account n immediately deleted it for some reason,

@mods I'll delete it if you think its too "revealing"

Spoiler: Hstdv

View attachment 67329

Edit: Ah,never mind..

He reposted it again

Notice that bay.
That is probably the electronics bay for the seeker and the GNC system. The 1st flight prototype didn't have that.

it proves that HSTDV is heading towards weaponisation.