Indian Missiles and Munitions Discussion - June'14

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Supratik
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Re: Indian Missiles and Munitions Discussion - June'14

Postby Supratik » 25 Dec 2016 22:44

Thanks for the link. A lot of information.

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Re: Indian Missiles and Munitions Discussion - June'14

Postby ashishvikas » 26 Dec 2016 00:07

arun wrote:Press Trust of India (PTI) via Times of India (ToI) reports an Agni V test is scheduled for tomorrow:

India set to test-fire nuclear capable Agni-V


Hemant Kumar Rout had also mentioned same dates. let's hope it hit target with precision.

Agni - V : 26 Dec

Agni - IV : 02 Jan

http://www.newindianexpress.com/states/ ... 38--1.html

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Postby prasannasimha » 26 Dec 2016 00:30

How do you plot a navarea on a map. Are there any freeware available. I could not find any

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Postby prasannasimha » 26 Dec 2016 00:35

Image

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Postby prasannasimha » 26 Dec 2016 00:36

I got that image from
http://img2.ph.126.net/80jjy7ZcCVkfd2-H ... 048407.jpg

What is that distance?

Gagan
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Re: Indian Missiles and Munitions Discussion - June'14

Postby Gagan » 26 Dec 2016 01:56

About 5000 Kms
And the splashdown point is 2200Kms away from the nearest Australian Navy/Airforce base.
The Aussies snoop on every missile test of India. USAF deploys planes to cover splashdown areas for every ballistic missile test

ramana
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Re: Indian Missiles and Munitions Discussion - June'14

Postby ramana » 26 Dec 2016 03:57

The long triangle is for depleted first and second stage debris. The rectangle is splash down area. Suggest take center of the rectangle as notional aim point. Could be any where as its a powered third stage for A-V.

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Re: Indian Missiles and Munitions Discussion - June'14

Postby SSridhar » 26 Dec 2016 05:41

I hope to see several splashdowns within that rectangle to test MIRV. It is time we demonstrated that.

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Re: Indian Missiles and Munitions Discussion - June'14

Postby Karthik S » 26 Dec 2016 05:48

I was hoping they might test for increased range (8000 KM) as claimed by few sources.

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Re: Indian Missiles and Munitions Discussion - June'14

Postby sum » 26 Dec 2016 06:25

Supratik wrote:Thanks for the link. A lot of information.

^^ beautiful show with lots of nuggets.

Wish all DDM conducted such informative stuff rather than usual rheotric

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Re: Indian Missiles and Munitions Discussion - June'14

Postby Karthik S » 26 Dec 2016 09:07

Deleted, duplicate.
Last edited by Karthik S on 26 Dec 2016 09:34, edited 1 time in total.

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Re: Indian Missiles and Munitions Discussion - June'14

Postby VinodTK » 26 Dec 2016 09:29

Vril wrote:


+++100

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Re: Indian Missiles and Munitions Discussion - June'14

Postby suryag » 26 Dec 2016 09:37

which TV channel is this ?

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Re: Indian Missiles and Munitions Discussion - June'14

Postby Singha » 26 Dec 2016 10:08

should have been two tests in 15 min intervals...one for the current rectangle and one with a light enough warhead out to the coastline of antarctica ...

it is imperative we demo 8000km to bring all friendly western EU allies into our warm and loving embrace :)

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Re: Indian Missiles and Munitions Discussion - June'14

Postby Austin » 26 Dec 2016 10:29

Azerbaijani Armed Forces are successfully tested a long-range air defense missile system Barak 8




Azerbaijani Armed Forces are successfully tested a long-range air defense missile system Barak 8 Israeli development.

The complex is able to repel any air attack on a maximum range of 70 km (according to some sources, up to 90 km). "Barak-8" was developed by Israel Aerospace Industries (IAI), in partnership with Elta Systems, Rafael and other companies. Azerbaijan ordered a terrestrial version of SAM - 12 PU trailer chassis MAZ (6x6) and 75 rockets.


link
Last edited by Austin on 26 Dec 2016 10:33, edited 1 time in total.

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Re: Indian Missiles and Munitions Discussion - June'14

Postby sum » 26 Dec 2016 10:32

"Barak-8" was developed by Israel Aerospace Industries (IAI), in partnership with Elta Systems, Rafael and other companies.

So its marketed as a pure- Israeli product?

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Re: Indian Missiles and Munitions Discussion - June'14

Postby Austin » 26 Dec 2016 10:37

Barak-8 is certainly designed and developed by IAI , The DRDO-IAI JV provided DRDO an opportunity to add Indian components to it which make its good from indiginous pov for us but we dont hold any veto of Barak-8 program or its sale , its JV thats good for both partners , that pretty much applies to any JV program , Maitri , Brahmos , FGFA etc
Last edited by Austin on 26 Dec 2016 11:55, edited 1 time in total.

tushar_m

Re: Indian Missiles and Munitions Discussion - June'14

Postby tushar_m » 26 Dec 2016 10:38

Agni 5 Launched (tv news )

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Re: Indian Missiles and Munitions Discussion - June'14

Postby ramana » 26 Dec 2016 11:34

https://twitter.com/FinancialXpress/sta ... 2403516416

Old news as to reason why A5 delayed for this long. It was the main battery.

http://m.economictimes.com/news/defence ... 031884.cms

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Postby prasannasimha » 26 Dec 2016 11:49

Live mint reports Agni 5 test successful
http://www.livemint.com/Science/HgIzku6 ... gni-V.html

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Re: Indian Missiles and Munitions Discussion - June'14

Postby Prem » 26 Dec 2016 11:56

http://timesofindia.indiatimes.com/indi ... s&from=mdr
10 minutes to splashdown for Agni 5.

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Postby prasannasimha » 26 Dec 2016 11:59

That link was 2 hours ago. May have splashed down by now

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Re: Indian Missiles and Munitions Discussion - June'14

Postby ramana » 26 Dec 2016 12:00

They are doing telemetry evaluation and splash down coordinates. Based on TOI report.

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Re: Indian Missiles and Munitions Discussion - June'14

Postby Prem » 26 Dec 2016 12:09

ramana wrote:Prem where does it say 10 min to splashdown.


Then reporter in the video said splashdown was within 10 minutes thus reveals the speed for distance travelled etc.

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Re: Indian Missiles and Munitions Discussion - June'14

Postby SSridhar » 26 Dec 2016 12:09

India successfully test-fires Agni V - T.S.Subramanian, The Hindu
The launch of Agni V from Wheeler Island off the Odisha coast at 11.18 a.m. on Monday was a success. This is the fourth success in a row for Agni V missile which can take out targets about 5000 km away.

The missile lifted off from a canister mounted on a huge TATRA positioned on Wheeler Island. A gas generator at the bottom of the canister ejected the 17 m-long, three-stage missile weighing 50 tonnes.

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Postby prasannasimha » 26 Dec 2016 12:28

All we can say is ground trace is at least 1.73 Km's/second approx if we know the time of flight. Depends on height of trajectory,whether any depressed trajectory or overlobbing along with bleeding maneuvers were done to hide true range etc

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Re: Indian Missiles and Munitions Discussion - June'14

Postby sum » 26 Dec 2016 12:43

^^ AoA...finally some cheer to end the new year.

Hope the Nirbhay too turns around in the new year and keeps the good news coming!

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Re: Indian Missiles and Munitions Discussion - June'14

Postby ramana » 26 Dec 2016 12:57

Four flawless tests meets Kasturirangan Committee requirements for SFC induction. Now on to user trials by SFC.

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Re: Indian Missiles and Munitions Discussion - June'14

Postby maitya » 26 Dec 2016 15:33

This is a good enough confirmation that the test was a success Prime Minister Narendra Modi congratulates DRDO for successful Agni-V missile launch.
Buried within the report are congratulations from the President as well.

Now off to User Trials ... betw with the success of Agni-V, why do we really need Agni-IV to be operationalised as well? :?:

I mean Agni-1P and Agni-III and V, will take care of our neighbors, respectively - right? So do we need Agni-IIs to be further inducted as well?

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Re: Indian Missiles and Munitions Discussion - June'14

Postby tsarkar » 26 Dec 2016 17:09

maitya wrote:I mean Agni-1P and Agni-III and V, will take care of our neighbors, respectively - right? So do we need Agni-IIs to be further inducted as well?

Older missile production has stopped long time back.

Refer here, Prithvi production was stopped in 2009

viewtopic.php?t=5077&start=320#p631276

The Hyderabad-based Bharat Dynamics Ltd (BDL) — manufacturer of Prithvi I and Prithvi II missiles — had received the Centre’s directive to short-close the production in January 2009, sources told Deccan Herald.
The abrupt closure means the armed forces will be short of 40-odd Prithvi II missiles, as the BDL will deliver only a portion of the original order. Neither the defence ministry nor the BDL authorities have explained the reasons behind the closure.
...
The PSU was successfully delivering quality missiles systems as per schedule till the closure. The BDL management has now been instructed to finish off the few Prithvi missiles, which are in the last stages, and close the project, according to sources.
...
The issue was taken up with Minister of State for Defence Production Rao Inderjit Singh in Parliament in February. However, the Minister refused to respond, arguing it would be against national interest.


My understanding is presently we produce A III & possibly A IV along with K-15 & K-4 that should shortly finish development trials.

Added later - From the link posted by ashishvikas earlier, its clear A IV is in production.

http://www.newindianexpress.com/states/ ... 38--1.html

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Re: Indian Missiles and Munitions Discussion - June'14

Postby SSridhar » 26 Dec 2016 17:20

Agni-V successfully soars yet again - T.S.Subramanian, The Hindu
Long range ballistic missile Agni-V was yet again successfully test-fired from Wheeler Island, off the Odisha coast, on Monday, signalling the coming of age of the country in the nuclear deterrence programme.

This is the fourth success in a row of Agni-V, which can carry a nuclear warhead weighing 1.5 tonnes over a distance of more than 5,000 km. The surface-to-surface missile lifted off at 11.05 a.m., carrying a dummy warhead.

The previous successful missions were executed on April 19, 2012, September 15, 2013 and January 31, 2015.

Officials of the Defence Research and Development Organisation (DRDO), which designed and developed the missile, called it “a wonderful moment” and “a huge success.”

Agni-V's re-entry system worked perfectly as well. Its nose-cone that encases the warhead is made of carbon-carbon composites, which can withstand a searing temperature of about 3,000 degrees Celsius when the missile re-enters the earth’s atmosphere.

The importance of the success of Agni-V lay in the fact that it was fired from a canister mounted on a massive TATRA truck. A gas generator at the bottom of the canister ejected the three-stage missile that weighs 50 tonnes and measures 17 metres long. It has a diameter of two metres. A launch from a canister mounted on a truck gives the missile flexibility of movement.

Agni-V can be made vertical in three minutes and fired from a roadside in a town.

Former spokesperson of DRDO Ravi Gupta said, “We have come a long way. This is a major landmark in the journey of India’s missile programme, with its acquiring a powerful nuclear deterrence... This is a wonderful moment.”

The missile was tested in its final, deliverable version to the Army. Its configuration has already been frozen.

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Postby prasannasimha » 26 Dec 2016 17:46

Is the battery thing for real (previous launches were textbook perfect or could it have been a MIRV test. People must be guessing!

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Re: Indian Missiles and Munitions Discussion - June'14

Postby Varoon Shekhar » 26 Dec 2016 18:26

^
I was wondering about that too. Agni-6 was supposed to have been launched by now, and it reputedly has MIRV capability. OTOH, it could have been a component quality and reliability issue, where a component is successful in one test, but not in another.

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Re: prasannasimha

Postby kurup » 26 Dec 2016 19:18

prasannasimha wrote:I got that image from
http://img2.ph.126.net/80jjy7ZcCVkfd2-H ... 048407.jpg

What is that distance?


Where did you get this image from ??

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Re: prasannasimha

Postby kurup » 26 Dec 2016 19:21

prasannasimha wrote:How do you plot a navarea on a map. Are there any freeware available. I could not find any


Use this website to plot the co-ordinates on google earth ..... http://www.earthpoint.us/Convert.aspx

It's a little time consuming process .

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Re: prasannasimha how does this occur?

Postby shiv » 26 Dec 2016 19:36

prasannasimha wrote:Is the battery thing for real (previous launches were textbook perfect or could it have been a MIRV test. People must be guessing!

OT but can I ask you a question? When you make a post the title of the thread that is displayed above changes to "prasannasimha". How does that happen? In fact I have manually changed it to Re: prasannasimha how does this occur?. Do you actually type in your name in place of the thread titile?

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Re: Indian Missiles and Munitions Discussion - June'14

Postby shiv » 26 Dec 2016 19:44

Videos of the A5 launch clearly show it emerging from a canister. This "gas generator" business intrigues me.

A brief re-visit to my schooldays tells me that a 50 ton Agni with a 2m diameter requires a pressure of just 1.5 atmospheres to lift it. I assume that the volume of gas needed to shoot it out of the canister will be at least equal to the volume of the canister - which would be about 50 cubic meters or 50 million litres.

What sort of gas generator would be used to produce 50 million litres of gas to shoot the Agni missile out safely?

I could spend a few more minutes to calculate the acceleration needed to throw the missile clear but in any case 50 cu meters of gas should do the trick because the pressure as the Agni begins to rise will be in the hundreds of atmospheres - giving it adequate acceleration.

Anyone know?

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Re: Indian Missiles and Munitions Discussion - June'14

Postby JayS » 26 Dec 2016 20:11

shiv wrote:Videos of the A5 launch clearly show it emerging from a canister. This "gas generator" business intrigues me.

A brief re-visit to my schooldays tells me that a 50 ton Agni with a 2m diameter requires a pressure of just 1.5 atmospheres to lift it. I assume that the volume of gas needed to shoot it out of the canister will be at least equal to the volume of the canister - which would be about 50 cubic meters or 50 million litres.

What sort of gas generator would be used to produce 50 million litres of gas to shoot the Agni missile out safely?

I could spend a few more minutes to calculate the acceleration needed to throw the missile clear but in any case 50 cu meters of gas should do the trick because the pressure as the Agni begins to rise will be in the hundreds of atmospheres - giving it adequate acceleration.

Anyone know?


50 cubic meter = 50000 ltr.

1.5atm pressure at the bottom would need to barely balance its weight, more to give it upward acceleration. Looking at the video acceleration is about ~10m/s and my back of the envelop calculations say the gas generator will need about ~20atm of gas behind the missile to push it out. My guess it its some solid propellant burning giving out hot gas which builds up the pressure and then maintains it (assuming constant acceleration until is comes out) until the missile is totally out of the tube. One can see flame coming out just when the missile clears the tube but before its thruster is started.

I saw in a documentary that US Submarines use pressurised steam (created by some type of fuel burning to boil water rapidly) to push missile or torpedo out.
Last edited by JayS on 26 Dec 2016 20:30, edited 1 time in total.

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Re: Indian Missiles and Munitions Discussion - June'14

Postby Karan M » 26 Dec 2016 20:26

sum wrote:
"Barak-8" was developed by Israel Aerospace Industries (IAI), in partnership with Elta Systems, Rafael and other companies.

So its marketed as a pure- Israeli product?


A purely political program foisted on DRDO by "Bundle" of the AF and UPA fraands with Akash induction reduced to 2 squadrons as an incentive.
If the Israelis replaced the local C4I and TEL, then its a good tribute to our yehudi fraands.

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Re: Indian Missiles and Munitions Discussion - June'14

Postby shiv » 26 Dec 2016 20:29

JayS wrote: One can see flame coming out just when the missile clears the tube but before its thruster is started.

Somehow I thought that jet blast was an explosive charge to knock out a cap under the main thruster of Agni. The blast goes left and a largie piece of debris goes right. But I must view the video again

That aside - a pressure of 1.5 atm as the Agni clears the top would require 75 cu meters of gas (I think) and that volume would have generated 20 atmospheres when the Agni was down in the canister with 13 times smaller volume - i,e about 6 cu meters below the missile - or 2 meters up from the bottom? For a pressure of 20 atm as it clears the top the total volume of gas would have to be 50 cu m x 20 = 1000 cubic meters,

I really don;t know what is used for gas generation. I do not see a huge flame emerging from the canister

Wrong! Plenty of gas there
https://youtu.be/YhSnkX3vZSQ


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