DRDO, PSU and Private Defence Sector News

[HariPrasad-1]

Rustom 2 UAV with the new engine's

View attachment 38462

Front section looks different from earlier versions.

 

[Chinmoy]

BNG (Ballistic Non Guided), could be mistral too...

Not Ballistic............ But Boosted.

 

[Chinmoy]

View attachment 38485

Self propelled mine burier

@Rassil Krishnan This is the garbage truck u were talking of.

 

[Chinmoy]

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Controlled aerial delivery system , guided by GPS etc

I think the initial batch has been supplied by US. We are in process of developing one but none has been tested so far.

I may be wrong here.

 

[Chinmoy]

Aerodynamic control for a SLBM would be very unusual, for the booster atleast. It's a tight squeeze in the launch tube anyway. Might make sense for the RV section, but very odd for booster.

I believe we mostly use flexible nozzle, jet vane, and fluid injection tech, since vernier thrusters are mostly liquid fuel motor oriented.

AAD with jet vanes and steering fins

PSLV main motor nozzle with ring of injectors near the outside of the throat.

PSLV side strap-on booster flex nozzle with actuator arm

NASA used the same flex nozzle thrust vectoring on the space shuttle SRBs, developed on peacekeeper/minuteman.

The control fins which @porky_kicker posted are not for booster or surface control of the missile atleast. These are for RV control and no it is not the first that we have such fins on a missile.

I still stay corrected till now @porky_kicker

 

[IndianHawk]

Aerodynamic control surfaces (especially the ones in your pic) on an RV is a regression from reaction control thrusters. Besides, those control surfaces don't even look optimized for hypersonic flight. They are gonna require RV to slow down significantly.
MARVs have around since 1960s and none of them has control surfaces like the ones in the pic.
The only place where those fins could have been used is the first stage. Even in that case, thrust vectoring is a far better alternative. Didn't you notice the trend atw no Agni-X missile after Agni-2 has aerodynamic control surface anywhere on its body?

This is a public forum

We don't know where would the control surface will be attached on missile ! We also don't know what is the actual objective !

Also comparison with Agni is pointless as slbm is different missile with different objective.

Maybe they want slbm to have ability to change courses. Maybe they want slbm to slow down a bit and glide / cruise so that decision maker have more time while missile is on the way.

While members should provide technical analysis they should not right off expertise of our scientists and keep an open mind to possibility / innovation.

 

[IndianHawk]

The control fins which @porky_kicker posted are not for booster or surface control of the missile atleast. These are for RV control and no it is not the first that we have such fins on a missile.
View attachment 38544

I still stay corrected till now @porky_kicker

This seems most plausible explanation.

Although I will still salivate to prospect of hybrid cruise / end phase ballistic slbm because that's just more exciting.

 

[Chinmoy]

Yes it can't definitely be reused, but can it not be reverse engineered, or at least studied?
Varthaman's R-73 seeker seemed to have suffered similar damages other missiles had suffered due to the crash, still in one piece.

Yes it could be reversed engineer and everyone does this. The R-23 was a direct copy of AIM-7 which the Russians obtained by luck. The AIM-7 got stuck into fuselage of a Mig and failed to explode.

So now a days every missile does have a fail safe in case it miss its target. The electronics would simply burn down for any retrieve. But still in case all its electronics fail, the possibility is always there for it to fall into enemy hands.

 

[Vorschlaghammer]

Yes it could be reversed engineer and everyone does this. The R-23 was a direct copy of AIM-7 which the Russians obtained by luck. The AIM-7 got stuck into fuselage of a Mig and failed to explode.

So now a days every missile does have a fail safe in case it miss its target. The electronics would simply burn down for any retrieve. But still in case all its electronics fail, the possibility is always there for it to fall into enemy hands.

Is this a separate incident from the AIM-9 + Chinese Mig which resulted in K-13 Atoll ?

 

[Vorschlaghammer]

The control fins which @porky_kicker posted are not for booster or surface control of the missile atleast. These are for RV control and no it is not the first that we have such fins on a missile.
View attachment 38544

I still stay corrected till now @porky_kicker

We seem to have reached a stable state with MaRV tech, however I wonder have we made any attempt at penetration aid tech ?

I mean like the 1980s Chevaline which the British used in their polaris SLBMs.

https://en.wikipedia.org/wiki/Chevaline

Although even if we did make progress (ISRO has been doing multi sat orbital injections for quite a while) a reason to keep it under wraps might be that the baseline techs like multi payload bus, and precise separation control are directly applicable in MIRVs.

But even if we have seating space for multiple RVs, the decoy itself needs development and testing.

 

[Chinmoy]

Is this a separate incident from the AIM-9 + Chinese Mig which resulted in K-13 Atoll ?

Yeah.... This was during Korean war where US has suffered loss of few of their recon aircraft too.

 

[Chinmoy]

We seem to have reached a stable state with MaRV tech, however I wonder have we made any attempt at penetration aid tech ?

I mean like the 1980s Chevaline which the British used in their polaris SLBMs.

https://en.wikipedia.org/wiki/Chevaline

Although even if we did make progress (ISRO has been doing multi sat orbital injections for quite a while) a reason to keep it under wraps might be that the baseline techs like multi payload bus, and precise separation control are directly applicable in MIRVs.

But even if we have seating space for multiple RVs, the decoy itself needs development and testing.

If you go by schematics, we had seen such diagram for our SLBM. But since the whole SLBM project is running behind, not quiet sure whether it has been simultaneously developed or not.

 

[Chinmoy]

This seems most plausible explanation.

Although I will still salivate to prospect of hybrid cruise / end phase ballistic slbm because that's just more exciting.

Then start salivating. Even the K15 is able to do that. Navy call it as STOF.
Although it doesn't cruise, but the trajectory is flat enough to deceive any defence.

 

[Akula]

Yeah.... This was during Korean war where US has suffered loss of few of their recon aircraft too.

Nah, it was during second Taiwan crisis the incident happened.
https://en.wikipedia.org/wiki/K-13_(missile)

 

[Chinmoy]

Nah, it was during second Taiwan crisis the incident happened.
https://en.wikipedia.org/wiki/K-13_(missile)

In 1968 the Soviets acquired an AIM-7 and a Vympel team started copying it as the K-25. A comparison of the two led to the K-23 entering production, based largely on its better range and countermeasures resistance. The K-25 work ended in 1971. Nevertheless, several features of the Sparrow were later used in the Vympel R-27 design.

https://en.wikipedia.org/wiki/R-23_(missile)

I am talking about this.

 

[Pret]

We don't know where would the control surface will be attached on missile ! We also don't know what is the actual objective !

Also comparison with Agni is pointless as slbm is different missile with different objective.

Maybe they want slbm to have ability to change courses. Maybe they want slbm to slow down a bit and glide / cruise so that decision maker have more time while missile is on the way.

While members should provide technical analysis they should not right off expertise of our scientists and keep an open mind to possibility / innovation.

Take a good look at those fins and compare them with those of Agni-2.
Agni-2's RV was developed a long time ago when India's heat shield tech wasn't particularly advanced. See that rounded nose, it creates a shockwave while slowing down the RV which helps to redirect the heat away from RV body. It also reduces accuracy, to compensate for that they gave it rudimentary maneuvering capability.
Come to Agni-5, latest heat shield tech, slender-conical RV, faster reentry, greater accuracy.
Now about K-4 and those fins. No scientist said that those fins would go on the RV. It was just some guy on a public forum who asked where those fins would go. Ever seen square fins on a Mach 14+ RV?
Just take a look at any reentry vehicle developed since 60. Pershing, AMaRV, BGRV (used flaps).

 

[Angad Singh]

HAROP KILLER DRONES FOR IAF

Full breakdown:- https://saluteindia.org/defence-news-harop-killer-drones-microsat-r-military-satellite-launched/

In a bid to enhance its unmanned warfare capability, the Indian Air Force is planning to acquire around 15 more HAROP attack drones which can crash into high-value enemy military targets to destroy them completely. The IAF already has an inventory of these drones which are equipped with electro-optical sensors to loiter over high-value military targets such as surveillance bases and radar stations before exploding them.

As of now, the proposal for acquisition is under consideration. Once approved, the Indian Air Force would be exercising the option clause in the previous deal signed a few years ago with Israel which is the main supplier of all types of drones to the IAF. Also under discussion with the Israelis is Project Cheetah, under which almost all the drones of the three services would be turned into high-quality attack drones and their surveillance capabilities would also be enhanced. At present, the three Services have a fleet of more than 100 UAVs, acquired over the years in different batches. Work is also in progress on developing indigenous combat drones which would be deployed on India’s Western and Eastern borders.

 

[porky_kicker]

Why do I have this feeling

That some BR clerk might have missed his original destination :biggrin2:

Now testing the waters in the wild badlands of DFI

 

[Chinmoy]

@Chinmoy

The pic above should interest you

It would have been better if the size would have been bit bigger.

 

[porky_kicker]

I think the initial batch has been supplied by US. We are in process of developing one but none has been tested so far.

I may be wrong here.

Yes you are wrong

Video of test out many years ago