Indian Missile News And Discussion

[Arun_S]

Pk of interception is higher when missile is approaching re-entry. The azimuthal accuracy from Radars is weaker compared to range accuracy. And launch a ABM that later requires wide correction makes it infeasible. So once radar sensor fusion is able to arrive at a solution that predicts missile in time space such that it fits into the relatively small kill box envelop (as determined at the moment when ABM is launched), then one can launch the interceptor.



Hopefully with above one can see that mid course interception may not be most effective. Unless there is a grid of radars on the way with high accuracy and the trajectory can be more accurately determined before the missile reaches Apogee. As Indian sensors improve and grid becomes denser, mid-course interception will be closer to reality.

[ramana]

The book "Lightning Bolts" has a section on the merits of reaction jets manuvering vs flaps and says that the former is more challenging. Further flaps are simpler and adequate in the lower atmosphere. Agni RV uses reaction jets.

[sai_k]

good read

http://issuu.com/a4press/docs/arms-2010-1

[ramana]

Awesome find SaiK!

Very descriptive.

[Guest]

Arun_S and ankit-s,

This is the graphic of the Bulava missile.



1. Notice how the MIRV bus orients the RV in the correct direction for re-entry, well into the ascent phase itself.

2. The RV nose tip points downwards when in storage in the missile as shown in the graphic!





Arun_S, could you explain the process in detail and do a similar animation for the Agni series and include deployment of RVs and decoys.

[sai_k]

Bravo BrahMos



The successful flight of the BrahMos missile on March 21 spotlights India's status as a world leader in launching supersonic cruise missiles vertically from moving warships and manoeuvring the missiles at the supersonic speed of 2.8 Mach. Launching a missile in an inclined mode is relatively easy. But lifting off vertically from a rolling and pitching vessel, climbing, turning and cruising horizontally, performing manoeuvres, and precisely hitting the target is technologically a big task. Astonishingly, BrahMos performed its intricate manoeuvres at 2.8 Mach, with its propulsion fully switched on during the whole course of its flight. (Normally, when a missile performs manoeuvres, its engines will not operate.) Another highlight was the advanced indigenous software for way point manoeuvring that enables the low-flying missile to hit a target vessel taking shelter, for instance, behind a rocky island. This was the 22nd launch of BrahMos, a joint venture product of the Defence Research and Development Organisation of India and NPO Mashinostroyenia, a space-missile enterprise of the Russian Federation. BrahMos is a versatile, two-stage missile that is nine metres long and weighs 3.9 tonnes with the canister. It has a range of 290 km. It can carry only non-nuclear warheads. With a flight record demonstrating a high degree of reliability, it has already been inducted into the Navy and the Army. India has ship-to-ship, ship-to-land, land-to-land, and land-to-ship versions of BrahMos.



Nobody in their right mind wants lethal missiles fired to kill, destroy, and inflict damage on civilian targets. Since the BrahMos missile is all about enhancing defence capability, a vertical launch from a ship has several advantages. First, it ensures the vessel's safety because the missile is pushed out vertically and its booster engine is fired in the air, allowing the ship to move away. Secondly, the missile in vertical launch can take on a target lying anywhere in a 360-degree range. Whatever the ship's orientation, the missile can turn in any direction to pursue the target. Thirdly, the vertical placement enables accommodation of more missiles in less space in a warship's cramped environs. The missiles are concealed inside the ship, providing them with long and safe storage and protection against corrosion. With India declaring that it would not use nuclear weapons first against another country, BrahMos becomes a formidable and highly cost-effective defence because it can hit any attacker with speed, power, and precision. Given its fast reaction — it takes off in four minutes from the time the command is given from launch headquarters — the missile has virtually no equal in a hypothetical conventional battlefield. BrahMos is a state-of-the-art demonstration of the great advantages of Indo-Soviet, and now Indo-Russian, defence cooperation.

http://www.hindu.com/2010/03/25/stories/...641200.htm

bravo opinion as well

[Arun_S]

[quote name='sai_k' date='24 March 2010 - 09:00 AM' timestamp='1269400921' post='105406']

good read

[url="http://issuu.com/a4press/docs/arms-2010-1"]http://issuu.com/a4p...ocs/arms-2010-1[/url]

[/quote]



On their Missile and Space article they have plagiarized my line drawings of launcher family, and collage of Shourya launch, the photo of failed Agni-3TD launch.



At least the article is factual.

[Arun_S]

[quote name='Gagan' date='25 March 2010 - 04:07 AM' timestamp='1269469795' post='105431']

Arun_S and ankit-s,

This is the graphic of the Bulava missile.



1. Notice how the MIRV bus orients the RV in the correct direction for re-entry, well into the ascent phase itself.

2. The RV nose tip points downwards when in storage in the missile as shown in the graphic!





Arun_S, could you explain the process in detail and do a similar animation for the Agni series and include deployment of RVs and decoys.

[/quote]

MIRV release methodology is secret sauce for a nation.



My answer: No comments.

[vasu_ray]

while land launched Ashwin protects key cities and installations, aircraft mounted ones having longer ranges can increase the size of the protection bubble and also be redeployed quickly



Another observation is, there seems to be lot of similarities between reaction jets on Agni RV with the ones seen on space based interceptors, anyways, if long range radars are an issue for accurate mid course interception, isn't that an issue for ASAT weapons as well?



unrelated to the above,



similar to wind tunnels simulating mach nos, can the atmospheric reentry conditions be used to simulate the blast wave of a nuclear explosion with reentry speed modulating Kt (albeit with no radioactivity)?

[sai_k]

An aam question: On the MIRV, Let us assume we have multiple targets that are really spread apart - one perhaps near our border and the farthest one as far as one of the RVs can reach. What would be the min and max ranges we could cover with the configuration in our best interest of thoughts?



If I say for A3/4 (6000km range,1.5T load, 6 MIRVs) can I hit one of the target at as close as 800-1000kms, while the rest may be at various distances?



Thanks

[sanforkom]

hi everyone..this is my first post on this forum.i really admire works of shri arun vishwakarma( arun s ) in the field of missiles.........ive learned a lot from your posts...........

sir i have a question though it may seem quite naive.........though we have icbm capability , do we really have a true icbm......does surya really exists........

[emperor]

[quote name='Gagan' date='24 March 2010 - 05:37 PM' timestamp='1269469795' post='105431']

Arun_S and ankit-s,

This is the graphic of the Bulava missile.



1. Notice how the MIRV bus orients the RV in the correct direction for re-entry, well into the ascent phase itself.

2. The RV nose tip points downwards when in storage in the missile as shown in the graphic!



Arun_S, could you explain the process in detail and do a similar animation for the Agni series and include deployment of RVs and decoys.

[/quote]

Thats a graphic depicted by a journalist/reporter.Dont take it as granted as official release.



Not even in my worst nightmare,no country will put out its launch sequence and seperation of warheads.



Even if DRDO folks say, that A-3 1st stage gets seperated here and then blah blah..... its only a media wash,but not the actuals.



How it works is,folks working on the same missile (different components and sub systems) will have no idea about the actual specifications...unless the project lead speaks out.

Stage integration experts work on the related designs to seperate that particular stage at a particular instant(say after 2 min of burn time or altitude,......)

the whole key rests with the final integration design team that writes codes to control all stage releases and trajectory corrections,..... It is only them who knows the optimal values and actual schematics.

Rest assured, the less the public knows about these actuals,the much better the nation can keep the adversary at a guestimate work(high level of uncertainity).

[emperor]

[quote name='dr. sanjay' date='25 March 2010 - 08:55 AM' timestamp='1269524868' post='105450']

hi everyone..this is my first post on this forum.i really admire works of shri arun vishwakarma( arun s ) in the field of missiles.........ive learned a lot from your posts...........

sir i have a question though it may seem quite naive.........though we have icbm capability , do we really have a true icbm......does surya really exists........

[/quote]

Nothing is naive.Infact every thing is apparantly naive to everyone cause the knowledge is an ocean and cant be swim across by any single person.



Regarding your question: What is in your mind,when talking about true ICBM capability?



It is just the definition varies for different nations according to their self geographies and doctrines.



India does have an ICBM in its arsenal(to be inducted)in the name of A-III.However,not being a purpose designed but a modified,the ranges are simulation based.



Having said that,India is readying an ICBM relevant to its doctrine in the name of A-V.

But,if u have a R-36/Topol-M or something something else in your mind--they might see the light only after the end of this decade.

[Arun_S]

[quote name='sai_k' date='25 March 2010 - 06:42 PM' timestamp='1269522288' post='105447']

An aam question: On the MIRV, Let us assume we have multiple targets that are really spread apart - one perhaps near our border and the farthest one as far as one of the RVs can reach. What would be the min and max ranges we could cover with the configuration in our best interest of thoughts?



If I say for A3/4 (6000km range,1.5T load, 6 MIRVs) can I hit one of the target at as close as 800-1000kms, while the rest may be at various distances?



Thanks

[/quote]

No way to figure that out unless on has the deep inside track. The number depends on max fuel carried by the RV. For pure ballistic RV that spread can be few tens of miles. For hypersonic maneuvering RV it is a different story and depends on full range ballistic range of missile and the maneuvering RV design. For Agni-III+ class missile carrying 3 petals of Agni-II type (not exactly the same RV but similar) that relative RV dispersion can be many hundred miles (> 1000 km possible).

[Arun_S]

[quote name='dr. sanjay' date='25 March 2010 - 07:25 PM' timestamp='1269524868' post='105450']

hi everyone..this is my first post on this forum.i really admire works of shri arun vishwakarma( arun s ) in the field of missiles.........ive learned a lot from your posts...........

sir i have a question though it may seem quite naive.........though we have icbm capability , do we really have a true icbm......does surya really exists........

[/quote]



Your name and post sounds like SBM, are you SBM?

[sanforkom]

Arun S

SBM ........... no sir i am not ( if its someone u know )...........otherwise i didn't understand what it means ( SBM ).........kindly explain......

[sanforkom]

Chandragupta , Arun S

What i meant by true icbm was like topol m , Satan or peacemaker types............not A3 or future A5..........i wanted to know about surya if it really exists.........ive read somewhere that we have changed name of surya 1 to agni 5 to limit the eyebrows raised....and regarding our nuclear doctrine of minimal credible deterrence and no first use policy........i dont think that it doesn't allow us to go for true icbms.........or does it

[sai_k]

Arun_S, thanks for the answers. Is it plausible to think of having couple of petals falling off the second stage for covering nearer distances on the same flower mission?

[Arun_S]

[size="2"]sai_k: No.

[/size]



[size="2"]Dr sanjay:

ICBM is one that can go to another continent and then there are others that can go to all continents. And it depends on where in the continent it is launched to reach the other continent.

Then there is the other question if that vehicle can carry only a rose flower to that distance or carry a usable 100 kg conventional explosive or a 2000 kg strategic payload. IMVHO it is a moot point to compare Indian missile that carry rose flower, or stones to long range with those that carry light weight, high yield TN warhead to long range. Apple to orange comparison ! [/size]

[acharya]

[quote name='Arun_S' date='26 March 2010 - 09:52 AM' timestamp='1269576896' post='105461']

Your name and post sounds like SBM, are you SBM?

[/quote]



Somebody might be trying to pull your leg