DRDO, PSU and Private Defence Sector News

[IndianHawk]

Ignore him. It is my humble advice. You said it right. He pop ups with strange logic every time. He is in my ignore list.

I enjoy bashing him since he is chinese it is expected that he will come up with nonsense against India. I only ignore Indian members when they come up with nonsense since they have no excuse to be anti Indian.

 

[Bajirao]

My speculation

Possibly both helina and dhruvastra has lateral thrusters

I think the flex nozzle / JVC is required during the initial stage to maneuver the helina / dhruvastra into the required lofted trajectory for top attack mode.

After that the lateral thrusters maintains the required momentum and trajectory control .

Even for direct attack mode , it helps to nose up the missile initially so that the seeker can capture the target .

Watch the video of both top attack and direct attack mode . Lofted trajectory is more prominent for top attack mode and less prominent yet visible even for direct attack mode.

Also why we have 8 km range increase for both of them because it acts as a booster , flex nozzle / JVC is part of it.

View attachment 53898

helina have two narrow side thruster

 

[ARVION]

Ignore him. It is my humble advice. You said it right. He pop ups with strange logic every time. He is in my ignore list.

Every time I write or post's something's he just pop's up and make an long series of criticism's even the no follow is of no use in front of that person, he should be given the annoying person if DFI award's .

 

[no smoking]

Every time I write or post's something's he just pop's up and make an long series of criticism's even the no follow is of no use in front of that person, he should be given the annoying person if DFI award's .

Because you keep coming up with wired logic, incorrect information and sometimes adding your own opinion into others words. Painting me with a title doesn't make you more right. It only shows that you are running out of argument.

 

[Bleh]

Because you keep coming up with wired logic, incorrect information and sometimes adding your own opinion into others words. Painting me with a title doesn't make you more right. It only shows that you are running out of argument.

No man, your outlandish statements often sound like "sky is red with 5 stars in it, so it must be made of blood"... Counter arguments are hard to come up with, because where do we start!

 

[Karthi]

Dhruvastra anti-tank guided missile was tested in direct and top attack mode at ITR Balasore (Odisha). Dhruvastra has been called a variant of HELINA anti-tank guided missile (ATGM) which previously has been tested from the ALH Rudra platform to its maximum range capability of 7.0 km in Lock On Before Launch (LOBL) mode, so why did Dhruvastra was test-fired from a ground-based launcher is the obvious question if in previous tests it was fired from Helicopter? , well the answer lies in some design changes which the missile has gone through and one that can be confirmed in visuals is the use of jet vane control system (JVC) instead of the flexible thrust control system (TVC) seen previously in HELINA, which required re-verification of in-flight performance. A jet vane control system for a missile is a system which is usually used due to its compact, rugged, lightweight factors but also since it provides very quick pitch over and roll control during launch and especially comes in handy in the top attack mode where it requires the missile to climb sharply after launch and cruise at high altitude then dive on the top of the target. As seen in the picture, four jet vanes inside the exhaust move as the fins move and it seems to be adopted from the Man-Portable Anti-Tank Guided Missile (MPATGM) developed by the DRDO. a jet vane control system comes handy when the missile has to achieve missiles minimum range effectively in the process after launch before it reaches a higher speed. As seen in the two videos of the trials, it was done to test the missiles minimum range rather than its maximum range which already has been demonstrated previously by HELINA. DRDO officials have confirmed that after few more rounds of trials from a Ground-based launcher, next will be testing from the ALH Rudra platform.

idrw.org .Read more at India No 1 Defence News Website http://idrw.org/dhruvastra-or-helina-the-catch-is-the-new-jet-vane-control-system-jvc/ .


I think Idrw admin is a frequent visitor of DFI .

 

[patriots]

View attachment 53919

Dhruvastra anti-tank guided missile was tested in direct and top attack mode at ITR Balasore (Odisha). Dhruvastra has been called a variant of HELINA anti-tank guided missile (ATGM) which previously has been tested from the ALH Rudra platform to its maximum range capability of 7.0 km in Lock On Before Launch (LOBL) mode, so why did Dhruvastra was test-fired from a ground-based launcher is the obvious question if in previous tests it was fired from Helicopter? , well the answer lies in some design changes which the missile has gone through and one that can be confirmed in visuals is the use of jet vane control system (JVC) instead of the flexible thrust control system (TVC) seen previously in HELINA, which required re-verification of in-flight performance. A jet vane control system for a missile is a system which is usually used due to its compact, rugged, lightweight factors but also since it provides very quick pitch over and roll control during launch and especially comes in handy in the top attack mode where it requires the missile to climb sharply after launch and cruise at high altitude then dive on the top of the target. As seen in the picture, four jet vanes inside the exhaust move as the fins move and it seems to be adopted from the Man-Portable Anti-Tank Guided Missile (MPATGM) developed by the DRDO. a jet vane control system comes handy when the missile has to achieve missiles minimum range effectively in the process after launch before it reaches a higher speed. As seen in the two videos of the trials, it was done to test the missiles minimum range rather than its maximum range which already has been demonstrated previously by HELINA. DRDO officials have confirmed that after few more rounds of trials from a Ground-based launcher, next will be testing from the ALH Rudra platform.

idrw.org .Read more at India No 1 Defence News Website http://idrw.org/dhruvastra-or-helina-the-catch-is-the-new-jet-vane-control-system-jvc/ .


I think Idrw admin is a frequent visitor of DFI .

And dfi has active and quality members...like @porky_kicker @Bleh @Chinmoy @IndianHawk ...and others....
And we should maintain the quality....

 

[Karthi]

what advantage does jet vanes offer wrt to flexible nozzle.

I think Jet vanes are much more sensitive than Nozzle, and is quick, reliable, and thrust loss minimal(1percentage) . More suitable for solid propellent Missiles . In some cases it is detachable. From the video Dhruvastra performed quick manuvers which can be done through Jet Vanes better than Nozzle .

 

[fire starter]

 

[ARVION]

Because you keep coming up with wired logic, incorrect information and sometimes adding your own opinion into others words. Painting me with a title doesn't make you more right. It only shows that you are running out of argument.

And again I am not a professional .

 

[Chinmoy]

what advantage does jet vanes offer wrt to flexible nozzle.

Multiple benefit along with few drawbacks.

The greatest benefit of all come in terms of cost, weight and engineering simplicity. A TVC is costly, heavy and bit complex in manufacturing . A JVC on other hand is cost effective, light and relatively simple in manufacturing process. So we could say that with this variant, the HELINA / DHRUVASTRA would become a bit cheap and easy for manufacturing.

 

[Bajirao]

Guys answer my question,did drdo mention that helina is renamed as dhuvastra? means helina is a closed project?

 

[ARVION]

Guys answer my question,did drdo mention that helina is renamed as dhuvastra? means helina is a closed project?

No just name changed .

 

[Bajirao]

No just name changed .

Where did they say ?

 

[ARVION]

Where did they say ?

Well cant find any official press release will try to find one .

 

[Chinmoy]

I hope you realise the one in the pic is for an ICBM

I once posted a similar pic , at that time I thought it was part of assembly jig

It's far fetched , what if someday we have ship launched, maybe even from cargo/container ships . Navy operated Dhanush so they might be open to the idea.

I believe we would see this assembly soon enough in FTR.

 

[porky_kicker]

helina have two narrow side thruster

Yes

And I am assuming dhruvastra also has the same.

 

[porky_kicker]

I don't understand why people are confusing themselves . They are simply repeating what the presstitudes are wrongly publishing without checking the original sources. Never trust MSM.

Dhruvastra is not renamed Helina . Nor is Dhruvastra the name of the launcher .

DRDO published brochure

Helina is the army version
And
Dhruvastra is the airforce variant of Helina

And the physical difference can be seen here

I am not aware of the software differences or differences in term of capabilities . Will have to wait for drdo to provide information on that.

 

[ARVION]

I don't understand why people are confusing themselves . They are simply repeating what the presstitudes are wrongly publishing without checking the original sources.

Dhruvastra is not renamed Helina . Nor is Dhruvastra the name of the launcher .

DRDO published brochure

View attachment 53933

Helina is the army version
And
Dhruvastra is the airforce variant of Helina

So it's a variant of helina or totally different ?

 

[patriots]

I don't understand why people are confusing themselves . They are simply repeating what the presstitudes are wrongly publishing without checking the original sources. Never trust MSM.

Dhruvastra is not renamed Helina . Nor is Dhruvastra the name of the launcher .

DRDO published brochure

View attachment 53933

Helina is the army version
And
Dhruvastra is the airforce variant of Helina

Ya most people are underinformed........the same is written in drdo site