Indian Missile News And Discussion

[Guest]

[quote name='ramana' date='29 November 2010 - 12:19 PM' timestamp='1291054303' post='109529']

Its not useful to rely on NPA's claims. Let them claim what they want.

[/quote]



This is probably to covince TSP for FMCT, which will pave the way for FMCT to go through. This will constrain our caabilities as well.

[Bharat_2009]

Deleted

[Arun_S]

[quote name='Bharat_2009' date='30 November 2010 - 11:54 AM' timestamp='1291097811' post='109550']

Obviously, DRDO director didn't tell me, in which part of the bomb making tribals are involved but the point is they don't know what they are doing and it is one of the reasons why the location of bomb making is not revealed in main stream media.



While arguing about tribals, we cannot miss the point that, India is making large number of nukes contrary to what is shown in main stream media or so called western experts opinion (who themselves depend on Indian media). Well, then arises the question how many nukes?



Arun Sharma's article and DRDO director's slip of the tongue, say it all, but still we may never know what is going on. We may never know, the exact number of nukes, strategic missiles, India is making. It is not for the general public. I wouldn't rely on Indian media or western experts, who still think that India does not have ICBMs. May be, that's what Indian government and DRDO want !!

[/quote]



Dear Bharat and Kritavarma: Request you to please delete in previous posts, all reference to what is due to slip of tongue of your relative. I think it may be sensitive. I will do the same on my posts.



Better cautious than sorry in this matter.



Thanks - Arun S

[Guest]

[quote name='Arun_S' date='01 December 2010 - 09:17 AM' timestamp='1291216166' post='109578']

Dear Bharat and Kritavarma: Request you to please delete in previous posts, all reference to what is due to slip of tongue of your relative. I think it may be sensitive. I will do the same on my posts.



Better cautious than sorry in this matter.



Thanks - Arun S

[/quote]





Arunji,



Done. In any case, given what BK says (and BK is more informed on our program than NPAs) our arsenal is much bigger than what the NPAs credit us for. This sound about TSP winning the nuke arms race may be a device to convince TSP for FMCT, following which they use maino & co to push FMCT on us, thus constraining us compared to original P-5...for now, TSP stands between FMCT and us, ironically...

[Bharat_2009]

BrahMos capability in mountain warfare tested





http://www.thehindu.com/sci-tech/science...927279.ece



BrahMos Block III version test fired



http://www.youtube.com/watch?v=4cZt57VUp...r_embedded

[Arun_S]

[quote name='Bharat_2009' date='03 December 2010 - 03:00 PM' timestamp='1291368137' post='109634']

BrahMos capability in mountain warfare tested





[url="http://www.thehindu.com/sci-tech/science/article927279.ece"]http://www.thehindu....ticle927279.ece[/url]



BrahMos Block III version test fired



[url="http://www.youtube.com/watch?v=4cZt57VUpT0&feature=player_embedded"]http://www.youtube.c...player_embedded[/url]

[/quote]



Gratifying to hear that.



I have doing my two naya paisa to impress the urgency to test mountain launch of Brahmo from Ladhak area, to some o fteh key people in policy making circle.

[Arun_S]

Launching a missile at 45 K ft altitude is only against high flying surveillance aircraft of U2 variety. Will put an end to carefree U2 sojourn over Indian skies.



[url="http://tarmak007.blogspot.com/2010/12/tejas-logs-1500th-flight-gearbox-gets.html"]http://tarmak007.blo...arbox-gets.html[/url]





Saturday, December 4, 2010



Tejas logs 1,500th flight; gearbox gets Type Approval from CEMILAC

23 DAYS TO GO



Gp Capt Suneet Tejas logged the 1,500[sup]th[/sup] flight today marking a small, yet significant, milestone. Sources tell Tarmak007 that when the PV-2 [from Tejas flight-line] landed in Bangalore from Goa, it marked the 1,500[sup]th[/sup] flight. Tejas first flew in 2001, January 4.

Today's flight was piloted by Gp Capt Suneet Krishna of NFTC. Tejas fired yet another R-73 missile (a total of 3 during this phase of sea trials) [color="#0000ff"]at an altitude of 15 km. “At this altitude very rarely a missile is fired and in that sense it is a great achievement[/color]. Last week alone we did 25-30 flights in Goa and Bangalore,” an engineer, attached to Mission Goa, said. Each flight is said to have lasted from 30-45 minutes. “This again demonstrates the serviceability of the aircraft,” he adds. The DRDO, in the meantime, said in a press release that the Tejas gearbox was finally certified. (See the release below as it is.)



Chennai-based CVRDE has indigenously designed and developed Aircraft-Mounted Accessory Gearbox (AMAGB) for Tejas application. The AMAGB is capable of transmitting 250 HP at 16,810 rpm with less than 38 kg of weight. AMAGB operates in two modes i.e., Starter mode and Accessory mode. In starter mode, it aids in starting the engine through Jet Fuel Starter (JFS).

In accessory mode, it drives accessories namely, two hydraulic pumps and an Integrated Drive Generator (IDG).This gearbox has undergone strenuous environmental and structural test. Further, this gearbox has also undergone 1000 hours of Endurance Test. Till date, AMAGB gearboxes have undergone more than 2000 hours of flight testing. As a pre-curser to induction into Indian Air force, 'Type Approval' from CEMILAC (Centre for Military Airworthiness and Certification) is mandatory. CVRDE has successfully obtained this type approval for AMAGB from CEMILAC.

[ramana]

Also the mountian warfare Brahmos application reduces the need to use low yield nukes to close the mountain passes. So its a very important advantage for India as it keeps the threshold high. I can think of their using Brahmos to blow up mtn passes to cut-off retreat/supply lines to advancing PRC troops in Gilgit Baltistan areas. So it will be battle of Tannenberg redux.



Meanwhile TSS reports in Hindu, that AII+ will be tested this week.



AII+ to be tested before Dec 10th

Flush with the successful flight of surface-to-surface missile Agni-1 on Thursday , the Defence Research and Development Organisation (DRDO) is preparing to launch Agni-II +, “a totally new missile,” before December 10.



The launch will take place from the Wheeler Island, off the Orissa coast, and preparations for it will begin in a few days.



The Agni-II + is a surface-to-surface missile that can carry nuclear warheads. It can strike targets 2,500 km to 3,000 km away. It is an intermediary between Agni-II and Agni-III. While Agni-II has a range of 2,500 km, Agni-III can home in on targets 3,500 km way.



Agni-II + will add teeth to the country's nuclear deterrence. It has two stages and both are powered by solid propellants. It can be transported by both rail and road.



Interceptor planned



In the coming weeks, the DRDO plans to launch an interceptor missile as part of its efforts to establish a ballistic missile shield. “We will soon launch an interceptor from the Wheeler Island, which will intercept a ballistic missile launched from the Integrated Test Range at Chandipur in Orissa,” a DRDO official said.



The interception would take place at an altitude of 15 km in what is called endo-atmosphere. The missile from Chandipur would mimic the trajectory of a ballistic missile launched from an enemy-country.



“We are trying to attempt a very different trajectory [from the earlier interceptor missions]. When the enemy missile is coming down in its trajectory, it will try to dodge the interceptor missile. The interceptor should be able to take care of this and still hit it,” the official said adding the interceptor would be a single-stage supersonic missile, called Advanced Air Defence. The attacker would be a modified Prithvi missile.



Prithvi-II launch soon



The coming weeks will see the launch of Prithvi-II, which had inducted into the Services. It can carry nuclear warheads.



“We are working on Agni-V for its maiden launch in 2011. It will be the flagship missile of the DRDO,” said a DRDO missile technologist. “The missile will have a range of 5,000 km. Agni-III will form the building block for Agni-V.”



With the addition of a third upper stage and some minor modifications, the two-stage Agni-III would transform into an awesome three-stage Agni-V. All the three stages would use solid propellants as fuel.



K-15 production

Sources in the DRDO said the production of submarine-launched K-15 missile was in full swing. The missile had been renamed B-05. After the launch, the missile would go up to an altitude of 20 km in a parabola and then travel 700 km to attack enemy assets. India's nuclear-powered submarine named “Arihant” would be armed with these missiles.

* So Agni II+ will be a new generation, road and rail mobile nuke missile. Most likely it will replace the AII eventually.



* The AAD interceptor test is to show capability against manouvering payloads. That is to show its capability against the M-15 type PRC missiles supplied to TSP and also the future ASBM that PRC plans to deploy.





* Agni V is to be three stage all solid missile.



* K-15/B-05 will be for the Arihant outload and the declared trajectory is similar to the Shourya.

[Arun_S]

[url="http://netindian.in/news/2010/12/08/0009060/maiden-test-agni-ii-plus-slated-thursday"]Big News: Maiden test of Agni-II Plus slated for Thursday[/url]

Notwithstanding the inclement weather and incessant rain that lashed the Orissa coast following a depression, all preparations are underway for the maiden test of the Agni-II plus missile tomorrow.



Agni-II Plus is a modified version of the Agni-II strategic missile and the test will be conducted from the Integrated Test Range (ITR) on Wheeler Island in the Bay of Bengal.



The success of this maiden flight test of a complete nuclear-capable missile, also known as Agni-II prime or A-2, developed by the Defence Research Development Organisation (DRDO), will set a new chapter in the India's missile programme.



According to Director General of DRDO V K Saraswat, the new missile would have a higher range, higher performance with respect to the thrust and weight ratio than Agni-II missile which has a range of 2,000 km.



Being an upgraded version of the Agni-II, the new missile, sources said, would be more accurate and powerful.



The new missile would perform more better at various levels in terms of accuracy, strength and distance covered in comparison to Agni-II missile.



The surface-to-surface missile can hit targets in between 2,500 km and 3,000 km thereby bridging the gap between the Agni II missile which has a range of 2,500 kms and the Agni III missile having a range of 3,000 km.



The Agni II Plus missile could also carry extra fuel and will have a new motor in its re-entry vehicle for better maneuverability and an improved navigation system.

[Arun_S]

And this is excerpts on A2-AT from by missile page that was previously posted on BR.



Sorry I have been so busy I have not yet hosted my material somewhere else for greater public good.



Recent reports suggest 1.3 meter diameter. And I think this missile was secretly tested in early 2010, and with Ballistic Glide RV. Let us see the actual dimension when the fat lady sings tomorrow.







[left] [/left]

[left][size="2"][url="http://www.bharat-rakshak.com/MISSILES/Agni.html#INTRO:%20AGNI-IIAT"]Agni-IIAT (A-2AT)[/url] [/size][/left]

[left][size="2"]Improved A-2 variant using more advanced and lighter material. Two stage, solid fuel, road & rail mobile IRBM.[/size][/left]



[size="4"]INTRODUCTION: AGNI-IIAT[/size]



[size="2"]The Agni-II was a quick and proven design, albeit of 1980s vintage. The Agni-IIAT is the result of a CIP (Continuous Improvement Program) with Agni-II. Different reports indicate India developing a more advanced technology (AT) version of Agni-II[/size][size="1"][sup][[url="http://www.bharat-rakshak.com/MISSILES/Agni.html#82"]82[/url]][/sup][/size][size="2"] putting into use, state-of-the-art technologies to significantly improve the Agni-II performance[/size][size="1"][sup][[url="http://www.bharat-rakshak.com/MISSILES/Agni.html#83"]83[/url]][/sup] [/size][size="2"]as well as to adapt it to the newer and lighter nuclear payload, that was proven by the Pokharan-II series of nuclear tests[/size][size="1"][sup][[url="http://www.bharat-rakshak.com/MISSILES/Agni.html#84"]84[/url]][/sup][/size][size="2"]. The new propulsion system could greatly increase the missile's range to 4000 km (1500 kg payload) and potentially to ICBM range for lighter payload. [/size]



[size="2"]The Agni-IIAT is likely to incorporate the following changes:[/size]

1. [size="2"]A larger diameter booster stage made of stronger 250-Marging steel, improving fuel loading and fuel mass-fraction (~0.88).[/size]
2. [size="2"]Lightweight carbon composite motor casing[/size][size="1"][sup][[url="http://www.bharat-rakshak.com/MISSILES/Agni.html#85"]85[/url], [url="http://www.bharat-rakshak.com/MISSILES/Agni.html#86"]86[/url]][/sup][/size][size="2"] for the second stage, instead of steel casing, improving its mass-fraction (~0.92).[/size]
3. [size="2"]Lighter, tougher and higher [/size][size="2"]β[/size] [size="2"](beta) RV, with all carbon composite re-entry heat-shield, multi directional carbon re-entry nose tip and control surfaces[/size][size="1"][sup][[url="http://www.bharat-rakshak.com/MISSILES/Agni.html#87"]87[/url]][/sup][/size][size="2"]. Very likely a unary version of the Agni-III's RV Mk-4.[/size]

[size="2"]We refer to this postulated configuration as Agni-IIAT that would be validated when it is tested sometime in the future[/size][size="1"][sup][[url="http://www.bharat-rakshak.com/MISSILES/Agni.html#88"]88[/url]][/sup][/size][size="2"]. However this paper gives an insight to potency of such technological improvement. [/size]



[url="http://www.bharat-rakshak.com/MISSILES/Images/A-2_&_Agni-AT_Line_drawing_R11A.jpg"][/url]



[center][url="http://www.bharat-rakshak.com/MISSILES/Images/Agni28.jpg"][/url][/center]

[size="2"]Comparative Line drawing of Agni-II and Agni-IIAT [/size][size="1"][url="http://www.bharat-rakshak.com/MISSILES/Images/A-2_&_Agni-AT_Line_drawing_R11A.jpg"][/url][/size][size="2"] [/size]



[size="1"][Image [/size][size="1"][color="#000000"]©[/color][/size][size="1"] Arun Vishwakarma] [/size]



[size="2"]New improved 1.2m diameter rocket case of maraging steel being handed over to M. Natarajan[/size]



[size="1"][Source: The HINDU, 10-Nov-06] [/size]



[size="2"]Composite casing of Agni-II's second stage [/size][size="1"][url="http://www.bharat-rakshak.com/MISSILES/Images/Agni28.jpg"][/url][/size]



[size="1"][Image [/size][size="1"]: Advanced Systems Laboratory, Hyderabad] [/size]



[size="2"]Description[/size]



[size="2"]After Agni-II development DRDO has reported major success in developing superior sub-systems ranging from newer higher performance RV, lighter casing of second stage and booster case made of stronger Maraging steel. The new missile's form factor is almost same as the Agni-II, but qualitative improvements in propulsion and warhead significantly improves its range and effectiveness.[/size]



[size="2"][color="#000000"]Accuracy of this longer range missile is augmented by space based precision navigation system. India and Russia are working together on the development and launch of a new generation of Global Navigation Satellite System (GLONASS) that will be operational by 2007[/color][/size][size="1"][sup][[url="http://www.bharat-rakshak.com/MISSILES/Agni.html#89"]89[/url]][/sup][/size][size="2"][color="#000000"]. India is also building its own IRNSS ([/color][/size][size="2"]Indian Regional Navigation Satellite System[/size][size="1"])[/size][size="1"][color="#000000"][sup][[url="http://www.bharat-rakshak.com/MISSILES/Agni.html#90"]90[/url]][/sup][/color][/size][size="2"][color="#000000"] covering 35% of earth surface, centered around India for assured access to space based precision navigation[/color][/size][size="2"].[/size]



[size="2"]Manoeuvring Re-Entry Vehicle: [/size]



[size="2"]New lighter and tougher RV, with all carbon composite re-entry heat shield with multi directional carbon re-entry nose tip and control surfaces, the new lightweight composites can withstand temperatures of up to 6,000º centigrade, thus capable of greater re-entry velocity[/size][size="1"][sup][[url="http://www.bharat-rakshak.com/MISSILES/Agni.html#91"]91[/url], [url="http://www.bharat-rakshak.com/MISSILES/Agni.html#92"]92[/url]][/sup][/size][size="2"]. The new RV smaller in diameter & length but higher [/size][size="2"]β[/size] [size="2"](beta) compared to the RV of Agni-I/II, similar to RV-MK4 of Agni-III & Agni-III++.[/size]



[size="2"]Propulsion[/size]



[size="2"]First Stage: A new 1.2 meter diameter[sup][[url="http://www.bharat-rakshak.com/MISSILES/Agni.html#92.A"]92.A[/url]][/sup] booster case made of 250-Maraging steel with improved chamber pressure and fuel mass-fraction (estimated 0.88). Approximately 12 meter long and 20 tonne mass[/size]



[size="2"]Second Stage: Lightweight filament wound carbon composite motor casing[/size][sup][size="1"][[url="http://www.bharat-rakshak.com/MISSILES/Agni.html#93"]93[/url], [url="http://www.bharat-rakshak.com/MISSILES/Agni.html#94"]94[/url]][/size][/sup][size="2"] for Stage-II with improved fuel mass-fraction (estimated between 0.90 - 0.92[/size][size="1"][sup][[url="http://www.bharat-rakshak.com/MISSILES/Agni.html#95"]95[/url]][/sup][/size][size="2"]).[/size]



[size="2"]Agni-IIAT Configuration[/size]



[size="2"]Agni-IIAT Stage 1[/size] ---- [size="2"]Agni-IIAT Stage 2[/size] ---- [size="2"]PBV/HAM[/size] ---- [size="2"]RV[/size] [size="2"]



Gross Mass [/size] ----[size="2"]20,000 kg[/size] ----[size="2"] 6,000 kg[/size] ---- [size="2"]220 kg [/size]

[size="2"]Fuel Mass [/size] ----[size="2"]17,600 kg[/size] ---- [size="2"]5,400 kg [/size] ---- [size="2"]40 - 180 kg[/size]

[size="2"]Empty Mass[/size] ----[size="2"]2,400 kg[/size] ---- [size="2"]600 kg[/size] ---- [size="2"]20 - 50 kg[/size] ---- [size="2"]50 kg[/size]

[size="2"]Fuel-Mass-Ratio[/size][size="1"][sup][[url="http://www.bharat-rakshak.com/MISSILES/Agni.html#96"]96[/url]][/sup][/size] ---- [size="2"]0.88[/size] ----[size="2"]0.90[/size] ---- [size="2"]0.82[/size]

[size="2"][color="#ffffff"].[/color][/size]



[size="2"]Thrust @ Vacuum [/size] ---- [size="2"]78,600 Kgf[/size] ----[size="2"]42,580 Kgf[/size] ---- ----

[size="2"]Thrust @ Sea Level [/size] ---- [size="2"]70,400 Kgf[/size] ---- ---- ----

[size="2"][color="#ff0000"](Burn Time)[/color][/size] ---- [size="2"][color="#ff0000"](58 seconds)[/color][/size] [size="2"][color="#ff0000"]--- (35 seconds)[/color][/size]





[size="2"]Length[/size] ---- [size="2"]12 meters[/size] ---- [size="2"]4.8 meters[/size] ---- ---- [size="2"]2.6 meters[/size]

[size="2"]Diameter [/size] ---- [size="2"]1.2 meter[/size] ---- [size="2"]1.2 meter[/size] ---- ---- [size="2"]1.0 meters[/size]



---------------------------



[left][size="1"][83] 'Agni missile will travel lighter soon', PTI [ THURSDAY, OCTOBER 13, 2005 12:45:45 PM] Economic Times. " Agni, with a power plant made of composite materials that would considerably reduce the weight of this IRBM class missile". "Agni is an intermediate range ballistic missile with two solid fuel stages and a Post Boost Vehicle integrated into the missile's Re-entry Vehicle, which is made of a light-weight carbon-carbon composite material able to sustain high thermal stresses." [url="http://economictimes.indiatimes.com/articleshow/1261173.cms"]http://economictimes...how/1261173.cms[/url][/size][/left]

[left][size="1"] [url="http://timesofindia.indiatimes.com/articleshow/1261170.cms"]Agni missile to travel light from next year- The Times of India[/url][color="#000000"], [/color]October 13, 2005 PTI [url="http://timesofindia.indiatimes.com/articleshow/1261170.cms"]http://timesofindia....how/1261170.cms[/url] [/size][/left]

[left][size="1"][84] Pokharan-II test resulted in a lighter weapon payload, whereas the original RV was intended for a much heavier boosted fission weapon. In view of rapid developments however, the basic design earlier developed continued to be used and keeping the future option open, for more optimized and lighter payloads.[/size][/left]

[left][size="1"][85] Sify News, 08 August 2003: India develops world's first re-entry heat shield.[/size][/left]

[left][size="1"][86] [url="http://www.ias.ac.in/currsci/feb102004/372.pdf"]Composites: Use in saucepan handles, artificial limbs and the AGNI[/url] CURRENT SCIENCE, VOL. 86, NO. 3, 10 FEBRUARY 2004 Advanced Systems Laboratory (ASL), Hyderabad: "The front-end technologies being developed include ultra high temperature composites, high performance composite rocket motor casings, radome for missiles and aircrafts, all-carbon re-entry vehicle structures, carbon composite canister technology, thrust vectoring through flex nozzles for large rocket motors, solid propulsion, control systems, system integration and explicit energy management guidance systems." [url="http://www.ias.ac.in/currsci/feb102004/372.pdf"]http://www.ias.ac.in...b102004/372.pdf[/url] [/size][/left]

[left][size="1"][87] Sify News, 08 August 2003: 'India develops world's first re-entry heat shield'.[/size][/left]

[left][size="1"][88] Technical Tune to Agni Test before Talks. The Telegraph: 30 August 2004. "The range of the solid-propellant Agni-II intermediate range ballistic missile can be varied according to payload and trajectory. The objective of today's test would be to reduce the circular error of probability for the longer-range variant, meaning that the missile was probably carrying a reduced payload." [url="http://www.telegraphindia.com/1040830/asp/nation/story_3694401.asp"]http://www.telegraph...ory_3694401.asp[/url][/size][/left]

[left][size="1"][89] Deccan Herald, 20 Dec 2005. "Indo-Russian tie-up on GLONASS satellite system". [url="http://www.deccanherald.com/deccanherald/dec202005/state1861820051219.asp"]http://www.deccanher...61820051219.asp[/url][/size][/left]

[left][size="1"][90] 'Indian Regional Navigation Satellite System approved', 9/5/2006 [url="http://www.india-defence.com/reports/1894"]http://www.india-def...om/reports/1894[/url][/size][/left]

[left][size="1"][91] Sify News, 08 August 2003: 'India develops world's first re-entry heat shield'. Quote: "...developed and successfully flight-tested the unique all carbon composite re-entry heat shield with multi directional carbon re-entry nose tip and control surfaces in the Agni systems."[/size][/left]

[left][size="1"][92] Defence scientists embark on making 'smart' missiles. The Hindu Businessline, 02 October 2004.

[url="http://www.thehindubusinessline.com/2004/10/03/stories/2004100301340500.htm"]http://www.thehindub...00301340500.htm[/url][/size][/left]

[left][size="1"][92.A]Review panel studying Agni III failure: scientific adviser[color="blue"], The HINDU Date:10/11/2006 [url="http://www.thehindu.com/2006/11/10/stories/2006111015800700.htm"]http://www.thehindu....11015800700.htm[/url] "[/color]The first rocket motor case of the improved design, of maraging steel and with 1.2 metre diameter, for the Agni programme was handed over to the M. Natarajan, scientific advisor to the Defence Minister by the Ramakrishna Engineering Company." [/size][/left]

[left][size="1"][93] Sify News, 08 August 2003: India develops world's first re-entry heat shield. Quote: "The carbon composite motor casings are some of the inputs to enhance the performance of long-range systems."[/size][/left]

[left][size="1"][94] Composites: Use in saucepan handles, artificial limbs and the Agni missile. Current Science, Vol.86, No.3, 10 February 2004. Advanced Systems Laboratory (ASL), Hyderabad. "The front-end technologies being developed include ultra high temperature composites, high performance composite rocket motor casings, radome for missiles and aircrafts, all-carbon re-entry vehicle structure, carbon composite canister technology, thrust vectoring through flex nozzles for large rocket motors, solid propulsion, control systems, system integration and explicit energy management guidance systems". "The carbon composite motor casings are some of the inputs to enhance the performance of long-range systems." [url="http://www.ias.ac.in/currsci/feb102004/372.pdf"]http://www.ias.ac.in...b102004/372.pdf[/url][/size][/left]

[left][size="1"][95] Author's Note: "Mass-fraction comparable to filament wound stage of similar rocket stages."[/size][/left]

[left][size="1"][96] Propulsion System Status and Development Pathways In the Indian Context. 6th International Symposium, Propulsion for Space Transportation of the XXIst Century, Versailles, May 14 - 17, 2002.[/size][/left]

[size="1"][97] ISP is based on ASLV-1 information at ****[/size]



[size="1"][98]ISP is based on ASLV-2 information at ****[/size]



[left][size="1"][99] Assumes the HAM engine is like Indian LAM or R40A with N[sub]2[/sub]O[sub]4[/sub]/MMH fuel (10 kg engine weight). ISP (Vac) of 306 thrust of 394 Kgf.[/size][/left]

[left][size="1"][100] School of Mechanical & Aerospace Engineering Seoul National University. [url="http://rpl.snu.ac.kr/databank/india/india.html"]http://rpl.snu.ac.kr...ndia/india.html[/url][/size][url="http://rpl.snu.ac.kr/databank/india/india.html"]

[/url][/left]

[Bharat_2009]

India's Multifunction Missile for Credible Deterrent by By Arun S Vishwakarma



http://www.indiandefencereview.com/IDR-U...rrent.html

[Arun_S]

Few months ago when I met Capt. Bharat Verma of IDR, he made all articles by yours faithfully (my pen name is Arun S Vishwakarma) available for free reading.



Including:

[size="2"][url="http://www.indiandefencereview.com/IDR-Updates/Indias-Strategic-Missiles.html"]India's Strategic Missiles By [/url][url="http://www.indiandefencereview.com/author/Arun-S-Vishwakarma/1"]Arun S Vishwakarma Issue: [/url][url="http://www.indiandefencereview.com/search.php?search&search_type=idr&search_data=Vol%2022.1"]Vol 22.1[/url] Jan - Mar 2007 | Date: 30 November, 2010[/size]

[size="2"][url="http://www.indiandefencereview.com/IDR-Updates/Indias-Long-Range-Missile.html"]India's Long Range Missile[/url] By [url="http://www.indiandefencereview.com/author/Arun-S-Vishwakarma/1"]Arun S Vishwakarma[/url] Issue: [url="http://www.indiandefencereview.com/search.php?search&search_type=idr&search_data=Vol%2021.2"]Vol 21.2[/url] Apr-Jun 2006 | Date: 15 October, 2010[/size]



Also need to find the URL for last (& my magnum opus) on[size="2"] "Way To A Credible Nuclear Deterrent" (of course a copy of that is hosted/available on India Research Foundation [url="http://www.indiaresearch.org/articles.html"]website[/url])

[/size]

Can someone find IDR url to that also?

[Arun_S]

[url="http://4.bp.blogspot.com/_5sP7XwykNSM/TQENGImNj7I/AAAAAAAAC48/7rwKGFAOVfQ/s400/"]Image of AII'[/url]



A2' (prime) image



To me it looks like its booster diameter is about 1.2 m

[ramana]

The vented interstage is needed to ensure there are pressure relief openings for the separation system. Elimination means they are using a different stage separation system which does not build up that much pressure. Maybe shaped charge for cutting the metal forward of the F/S dome. Also could be faster S/S motor which will obviate the need for venting. Flare in the s/s motor is an adapter and pseudo-interstage. So there is dia change between the f/s and s/s. If they kept the s/s dia same it will give even more range. Must have been a trade-off.



The F/S lack of fins means the old SLV F/S stage is not being used anymore. And control is via thrust vectoring with flex nozzle.



The more interesting is the payload. It doesn't have those canards. And yet is stated to be more manouvering and accurate. So most likely its based on jets. Same as the AIII. All those patches are antennas for the test body. Also its higher beta with the clean lines. Low beta means could slow down and become vulnerable.



I would like to know the total thow weight if its different than the AIII which was 1.5 tonne.





Arun_S, Great job in anticipating the AII' in all its design features by five years. Especially predicting the AII' RV will be similar to AIII!!!

[Bharat_2009]

[quote name='Arun_S' date='10 December 2010 - 02:43 AM' timestamp='1291928736' post='109755']

[url="http://4.bp.blogspot.com/_5sP7XwykNSM/TQENGImNj7I/AAAAAAAAC48/7rwKGFAOVfQ/s400/"]Image of AII'[/url]



A2' (prime) image



To me it looks like its booster diameter is about 1.2 m

[/quote]





Sorry Arunji, only today I saw your post, asking to delete my unwanted posts. I deleted them.





Slightly Bigger image of Agni II (AT) Hypersonic Boost Glide Missile



http://4.bp.blogspot.com/_5sP7XwykNSM/TQ...+Karan.jpg



From Arun's article



Agni II (AT) range is



>4500 km @ 1000 kg payload



and from one of his earlier comments



>6000 km @ 600 kg payload





Link to A credible way to deterrent



http://www.indiaresearch.org/WayToACredi...errent.pdf

[Arun_S]

BTW the second stage is very very similar in size to the composite second stage of the Agni-II.



Also this RV is of a different design and appers longer than that of AGni-III (since this one is IMHO is a BGRV)



If one is wondering why did they go for different diameter for upper stage; two reasons come to mind:

1. The BGRV is optimized and for desired Beta it finishing diameter is what it is. For a choice of adapting to a thicker upper stage one has to put in an adapter that adds to length and drag at crucial acending High-Q point. transiting to thicker dia later increases the missile beta, better aerodynamics during Hi-Q, as well as structurally more sound.
2. For a given mass of upper stage, as the mass gets smaller the length of the stage does not decrease proportionally. So if high i snot a problem it is better to use a thinner dia.

The other incidental advantage is DRDO has already planned and realized the upper stage that is common to both A-II and A-II'(prime) over a long term plan.



I am advised by a key senior person that one of teh reason there are too few A-II manufactured is because it is the A-II'(prime) {that I used to refer as A-II(AT)} that will form the mainstay of Indian medium range missile force.

[Bharat_2009]

Agni II (AT) test fired !!



http://www.thehindu.com/news/national/article943501.ece

[Bharat_2009]

Indian express report on Agni II (AT)



http://www.indianexpress.com/news/Upgrad...lly/722913

[babbupandey]

So many differing stories in the media about, what is the truth? Is it a success, a failure or a partial-failure?

[Guest]

[quote name='babbup' date='10 December 2010 - 12:25 AM' timestamp='1291961824' post='109770']

So many differing stories in the media about, what is the truth? Is it a success, a failure or a partial-failure?

[/quote]





Unfortunately, it has failed. The link here http://tarmak007.blogspot.com/ says that there was some stability problem with the missile body. This probably indicates that:



1. Each new BM is in a way, an altogether different animal. Ground tests, etc can only go so far in this business (though France with the M-51 has been able tomake do with limited tests, all successful..USSR/Russia very different...as was USA during the early phase of the Trident II).



2. testing must be made more frequent. The rate now is better than it was 6-7 years ago. But this rate must increase. Something like 4-5 tests of each type (A-II, A-II+, A-III, A-V) every year should be the target.



3. Probably pushing A-III more than A-II makes sense. A-III must undergo operational trials ASAP.



4. A-I and Shourya seem to have had no problem with 7-8 succesful tests each. These take care of TSP.



5. Waiting for A-II+ was a serious mistake. Even if this were successful, it would take 4-5 years to go operational. This failure may cause a 6 month delay or so if they really push it. They could have pushed the old A-II and A-III instead. Even accounting for the failures of A-II, we would have a proven missile in reasonable numbers now.



6. Will A-V test be de;ayed because of this ?



7. Arunji, could the K-4 test have been a surface breaking test of the kind shown at the beginning of this video ?



http://video.mail.ru/mail/aviger/538/2173.html



That would explain why it would take 2017 or so till K-4 is operational.



8. A-II+ looks unrelated to K-4. It has a high L/D ratio. Certainly not like a land based version of an SLBM. Probably not the "canisterized A-II" Dr. Saraswat referred to.



9. For 3000-4000km type range, it will take 5 years for the deterrent to become more credible. This is changed if A-III gets successfully tested more times and made operational rapidly.