Bharat Rakshak

thammu

DRDO ties up with Snecma to revive gas turbine engine for Tejas http://www.business-standard.com/article/specials/drdo-ties-up-with-snecma-to-revive-gas-turbine-engine-for-tejas-116112000534_1.html India’s defence research agency has signed a deal with French engine maker Snecma to revive and certi...

thammu

SSridhar wrote:The orbital requirements are vastly different....

Thanks. Understood now.

thammu

SSridhar wrote
...PSLV puts the payloads into a polar orbit which is at 90deg to the GSO and at altitudes of only ~700 Kms....

Sorry, what I meant was -- GSLV can release all the polar load at ~700 Kms, and then go ahead to GTO. Or carry more tonnage to 700 kms than a PSLV.

thammu

A newbie question: Why is GSLV MK II planned for only 2 launches/year. Why cannot it take PSLV role as we have mastered Cyro and Multiple Satellite launch.

thammu

Why Isro's scramjet flight demonstration is significant http://www.business-standard.com/article/current-affairs/why-isro-s-scramjet-flight-demonstration-is-significant-116082800279_1.html The flight demonstration of the hypersonic air-breathing dual mode ramjet engine, which uses atmospheric oxyge...

thammu

Any update on AAD?

thammu

Indian Navy successfully test fires Barak-8 http://www.thehansindia.com/posts/index/2015-12-30/Indian-Navy-successfully-test-fires-Barak-8-196601 The Indian Navy successfully test fires long-range surface-to-air missile, the long-range Barak-8 surface-to-air missile from onboard INS Kolkata on Wedn...

thammu

If a person constantly provokes people by posting misleading claims, refuses to entertain any facts which contradicts their prejudices, then its pretty late in the day to play a victim.

++1

thammu

Agni-IV to be tested next week http://www.thehindu.com/todays-paper/tp-national/agniiv-to-be-tested-next-week/article7848160.ece Agni-IV, India’s surface-to-surface missile capable of carrying nuclear warheads, will be flight-tested next week, probably on November 9. The trial will take place on th...

thammu

Cruise missile Nirbhay misses the target after 11 minutes of its test-fire

http://odishatv.in/cruise-missile-nirbh ... test-fire/

thammu

Cruise missile Nirbhay test-fired from third launch pad of Integrated Test Range at Chandipur in Balasore at 11:38 am

http://odishatv.in/cruise-missile-nirbh ... t-1138-am/

thammu

Possible 'Technical Snags' Delays Nirbhay Cruise Missile Test
http://www.newindianexpress.com/states/ ... 083102.ece

Now the test has been scheduled for 11.45 am,” informed the source.

thammu

From ISRO FB page

GSLV-D6 / GSAT-6 Update:
The 29 hr countdown activity of GSLV-D6/GSAT-6 Mission has commenced today, Wednesday, Aug 26, 2015 at 11:52 hr IST Launch is scheduled at 16:52 hr IST on Aug 27, 2015

thammu

http://indianexpress.com/article/explai ... picks=true
Interceptor missile tested 7 times, DRDO’s Rajinikanth moment still far

thammu

NDTV http://www.ndtv.com/article/india/india-successfully-test-fires-new-interceptor-missile-514504?pfrom=home-otherstories Balasore, Odisha: India today successfully test-fired a new interceptor missile capable of neutralizing any incoming long-range missile at higher altitude. The interceptor, pos...

thammu

Analysis: Now to build two more Nuclear-submarines quickly Here With its nuclear reactor going "critical" on Friday night, INS Arihant (Sanskrit for Destroyer of enemies), India's first indigenously developed nuclear-propelled and in the future nuclear-armed submarine has reached a signif...

thammu

Nuclear reactor on INS Arihant goes critical; huge step forward for India's N-triad here http://www.ndtv.com/news/images/story_page/INS-Arihant-new-295.jpg Moving towards completing its nuclear triad, India on Friday night activated the atomic reactor on-board the indigenous nuclear submarine INS A...

thammu

News on Hypersonic missile Shourya http://www.thehindu.com/news/national/a ... 486470.ece

thammu

Yep, but its gonna take a while before the entire western corridor is electrified

The corridor will be electrified from day 1. The tracks and OHE is coming together, not separately. Doesn't make much economic sense to delink the two.

thammu

The Western corridor is non-electric where as the eastern is going to be electric. This is exactly where Railways is showing its interest. Kaveri though inefficient can provide the power to pull 100 carriages with Dual-Stack containers at 100 kmph. That was the earlier plan. It was finally decided ...

thammu

Also please refer to the good post by PratikDas on Pulse Width Modulation which helps to eliminate transmissions for hybrids

Indian Railways is already using PWM technique as does other modern railways in 3 phase drive on their locomotives and EMU.

thammu

Why is the diesel engine not used to drive the wheels directly? Is it not inefficient to convert energy in this manner ( mech -> elect ->mech) ?? Smaller diesel locomotive, like shunting engines use direct transmission. But for smoother (jerkless travel) of over 2000 ton loads electric motors becom...

thammu

Railway uses a engine for driving an alternator which feeds a electrical traction motor, mounted on wheels. Railway will definitely be interested in any compact engine. Presently, the engine driving the most powerful diesel locomotive has a rating of 4000HP. Kaveri will definitely will be more power...

thammu

Indigenous aircraft carrier launch this Dec The construction of India’s first indigenous aircraft carrier (IAC) at Cochin is expected to be completed in December this year, after which the warship will be launched, Defence Minister AK Antony said Tuesday. Antony, in a written reply to questions in ...

thammu

Pakistani Intelligence Announces Its Full Cooperation With U.S. Forces.... http://o.onionstatic.com/images/articles/article/20681/Pakistani_Intelligence_R_jpg_600x345_crop-smart_upscale_q85.jpg ISLAMABAD—Pakistan's Inter-Services Intelligence agency restated Thursday its commitment to the fight aga...

thammu

Air Chief in favour of flexing missile power

thammu

Decks cleared for purchase of 10 C-17s with offsets After considerable diligence and mathematics, India is all set to purchase 10 C-17 Globemaster strategic lift aircraft from US for $4.1 billion, with upfront offsets of $1.12 billion. The Cabinet Committee on Security on Wednesday will consider a ...

thammu

Ariane 5 enjoys second successful launch for 2011 @ http://www.space-travel.com/reports/Ariane_Ariane_5_enjoys_second_successful_launch_for_2011_999.html .....The payload mass for this launch was 10 064 kg; the satellites totalled 8965 kg, with payload adapters and dispensers making up the addition...

thammu

http://www.thehindu.com/news/national/article1514501.ece An indigenously-developed Advanced Air Defence missile destroyed an incoming target missile, a modified Prithvi, at an altitude of 16 km over the Bay of Bengal. In a successful interception test, an indigenously-developed Advanced Air Defence...

thammu

Any news on Kaveri?

thammu

Can somebody point out the link to Comparision of Light Combat Aircrafts available round the world. How does Tejas compare?

thammu

Even the Prestigious National Papers get it Wrong !!!! http://epaper.expressbuzz.com/NE/NE/2010/12/19/ArticleHtmls/19_12_2010_005_022.shtml?Mode=1 The report mentions: "INDIA will make a secon bid to join the exclusive clu of spacefaring nations tha employ cryogenic technolo gy when the Indian ...

thammu

we are in the 100% Asian league compared to 30% of others !!

thammu

http://www.deccanherald.com/Content/May132008/national2008051367690.asp?section=updatenews Dr Tessy Thomas, one of the 200 women scientists and technicians working for the DRDO, has been cleared to be appointed to the post of Project Director of Agni-II missile project. After rising to the ranks of...

thammu

A special system, called ring-laser gyro-based inertial navigation system, was flown on board for higher accuracy of the flight. Is it the same "ring-laser gyro", whose technology France had refused to share when our earlier defence went for a visit there and requested them? Have we been ...

thammu

Tests, Arrests Draw Attention to Indian Missiles http://www.armscontrol.org/act/2007_05/IndianMissiles.asp Three other systems were recently tested, beginning March 30 with a naval version of the Prithvi, the Dhanush. The supersonic cruise missile BrahMos underwent a 14th trial flight April 22 as pa...

thammu

Plea for moderation of views!!!

<a href="http://www.indianexpress.com/story/28216.html">Long
range over China</a>

thammu

Agni III test fired successful

http://www.ddinews.gov.in/Homepage/Home ... y/agni.htm

thammu

http://www.ddinews.gov.in/Homepage/Home ... y/agni.htm

Bharat Rakshak

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Re: Kaveri & aero-engine discussion

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Re: Chandrayan-1 mission launched succesfully

Woman to head missile project for the first time

Agni III test fired successful