Bharat Rakshak

vasu_ray

There are multiple launch pads at Chandipur and if these are purely user trials they can position 2 or more TELs and should one fail as happened now, the second one can be launched with in the same time window and thats how IA would use them anyways the same thing happened when in the last but one A...

vasu_ray

nuclear deterrence is ok as long as we have space to react conventionally wrt terrorist actions; Indian reaction on 26/11 showed we don't have that space since our pundits on esclation calculus deemed that TSP in retaliation could lob few missiles which could land on our population centers, ABM depl...

vasu_ray

for boost phase interception the spec of SM-3 is suitable which is 150km altitude and 500km range while PDV is said to be close to THAAD which is at 150km altitude and 200km range There was a mention of a possible surface role for a PDV derivative which suggests longer ranges are possible. Arrow-3 r...

vasu_ray

ITR sources said the missile would be tested for 320 km range. Earlier on June 18 last, the missile was conducted for a range of 273 km. Wow! Missile range is gradually increasing. If the max. range is 350 km what is the significance of testing @ 320 km from the previous 273 km range. Probably they...

vasu_ray

Brahmos can be para dropped from a C-130 aircraft using a ram air parachute which stabilizes the missile for launch, here is an example

http://en.wikipedia.org/wiki/File:X-38_ ... -EDIT1.jpg

vasu_ray

To do that we must check the thrust profile of the missile and fine tune it accordingly. understood and few more comments Shaurya has demonstrated the kinematic profile while PAD did the end game dynamics our western neighbour's breadth is 400-500km from LOC and Tibet is the same from the LAC -----...

vasu_ray

ust sharing my thoughts...I see there are three areas to look for in utilizing Astra for the role you describe.... 1. Sensor: The current sensor must have the capability to use in ABM role. 2. Kinematic profile: Astra is designed as AAM missile which boost then coast or sustain and go for the endga...

vasu_ray

now that AFNet is active, they should focus on creating a country wide multi static network by synchronizing the T/R modules of ground based radars, AEW systems, airship mounted radars, ship based radars and fighter radars so as to be able to detect stealthy planes and cruise missiles within Indian ...

vasu_ray

What is the payload capacity of Astra? If this satisfies the user requirement it can be developed. Throwing Astra as a second stage on Pinaka is nothing more than like adding a giant booster to astra the 15kg HE warhead of Astra is sufficient for a non-maneuvering target like a medium range ballist...

vasu_ray

The spec for Pinaka-2 rockets says it has a range of 120km and attains a height of 40km, if ramjet propulsion is integrated are we suggesting that it can attain even longer ranges in its descent phase along with maneuverability? in which case how is this not better than a coasting SAM or a air dropp...

vasu_ray

what is stopping them to test the air launched Brahmos from the Tupolev's? instead of waiting for the modified Su-30MKI

vasu_ray

Ground launched AWACS killer the spec might be for a 400km range, supersonic missile Barak JV derived ER-SAM as suggested Prithvi-4 with four ramjets similar to Akash might have enough range and probably on the cheaper side Boost Phase interceptor - HALM this has to be light weight, hypersonic and ...

vasu_ray

LRCM is already revealed

probably PDV and AAD derived ER-SAM/Ashvin unless the ones in question are totally out of known syllabus

vasu_ray

http://en.wikipedia.org/wiki/Electrified_water_cannon

the favoured approach seems to be using sticky glue balls with electric discharge similar to stun guns by way of including 9v batteries

vasu_ray

Thanks Gagan, Chackojoseph

I think what we are looking for is probably in the LRCM with an Indian brand supersonic propulsion

vasu_ray

just a thought, Prithvi being the lab rat for DRDO, if the Brahmos kind of ramjet propulsion is added to the liquid fuelled prithvi (it will ignite the ramjet in its descent well within the atmosphere), with this mod, can the range be increased? throttling the terminal speed of Prithvi is translated...

vasu_ray

couple of questions Hari Nair, 1) http://en.wikipedia.org/w/index.php?title=File:Helicopter_aerial_refueling.jpg 2) http://en.wikipedia.org/wiki/File:Indian_air_force_dhruv_helicopter_j4042_arp.jpg Looking at the above two pictures, can they mount a retractable refuelling probe in the place of the g...

vasu_ray

deleted.
please make such queries in the speculative tech thread (whateveritsnameis) and not here.
thank you.

vasu_ray

deleted so thoughts can remain conservative!

vasu_ray

By loosening the term CIWS, since the speed of a torpedo is no comparison to a fast moving anti-ship missile if there is a prediction of the torpedo path the gun can basically mine its probable paths with screens of 'grenades' and need not create an underwater 'wall of lead', so this may not require...

vasu_ray

if the shell say has a 10cm tungsten tip, it releases a gas puff when it contacts the water surface making the shell entry possible, it then maintains its trajectory but not the momentum and hence needs to explode close to the torpedo using a timing mechanism, the shell wraps a 'underwater grenade' ...

vasu_ray

its about time, here is a scenario, a bridge over an inaccessible terrain is being supported by a hovering heli, then a power cable can be connected to the heli from a truck mounted kaveri based gas turbine generator stationed at one end point of the bridge maybe we can catch up faster with diesel-e...

vasu_ray

Thanks Koti, Hari Nair, good to be educated about the mm and gun recoil, couple of points, if the gun mount on the underside of the LCH be mounted on an underside 'generic' pylon so that depending on the operational need it can be changed. For a gatling gun mount, it should be made swivel less so th...

vasu_ray

From the Military point-of-view with a total of just about 9 db reduction (assuming both modes add up are compatible with each other), I wonder whether we are have arrived at the 'Whisper Mode' aka Blue Thunder style. Maybe not. As I understand, the M621 single-barrel cannon is available for marine...

vasu_ray

Hari Nair, couple of questions, Are there any plans to reduce the blade noise? it seems to help with the surprise element Will the pilot be able to 'park' the heli in a hovering position using an on-board RLG (Ring Laser Gyro) based reference system? Auto-pilot coupled hover is no big deal these da...

vasu_ray

Will this help in logistics if a Bailey bridge can be constructed hanging off of hovering helis serving as anchors, for example couple of Mi-26's separated at 300m, can build a bridge on any terrain and at reasonable altitude, these helis can be fueled while hovering even more complex would be daisy...

vasu_ray

Hari Nair, couple of questions,

Are there any plans to reduce the blade noise? it seems to help with the surprise element

Will the pilot be able to 'park' the heli in a hovering position using an on-board RLG (Ring Laser Gyro) based reference system?

vasu_ray

For the LCA
http://upload.wikimedia.org/wikipedia/c ... osites.jpg

how stealth it can become if the engine is recessed like this
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by making the wings curve back as shown at 27 secs into this video
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vasu_ray

some points to ponder a) if we take an IR picture of a commercial jet engine from the exhaust side and again when the reverse thrusters are engaged but at idle thrust, they will be different b) people loath the idea of a coasting fighter while its natural for a missile while both are managed by FCS ...

vasu_ray

DIRCM if available is fine, stealth is even better

if vector thruster cone is pointing away from the missile sensor with the engine either at idle thrust or killed would it not affect the IR profile

vasu_ray

Switching off the engine does little more than making it easier for the missile to hit you. What do you have against DIRCM? if the IR missile sensor is looking at these IR sources due to release of flares x x x X x x x it probably knows to lock onto X which is the aircraft engine and if we change i...

vasu_ray

Shiv, I will look at this slightly differently establishing a baseline, LCA can fly at tree top level at a minimum speed using x thrust overcoming y drag so if x is removed the plane loses altitude immediately at a high speed, hx thrust overcomes hy drag the moment engine is shut off hx goes to zero...

vasu_ray

a noob question, how far/long can the LCA glide without losing altitude if it shuts off its engine at its max speed? say it will try to compensate by increasing the AoA can it lose an IR missile if the engine shielded by a vector thruster points away from missile approach angle? and then re ignites ...

vasu_ray

one would probably see a deluge of these minisubs in the Arabian sea from TSP soon given its NK links

http://news.yahoo.com/s/ap/20100605/ap_ ... ip_sinking

vasu_ray

with the autopilot on LSP-4, the LCA datalinked by a ground station or an AWACS can be vectored by providing way points or can be fed a preprogrammed flight plan one can grade the reduction in pilot work load by the autopilot performing 1) routine flying 2) air-to-air refueling 3) all weather landin...

vasu_ray

do you guys think the missile tubes are placed single file or to be exact like a koko player arrangement? allowing for larger dia missiles in future

12 missiles need 3 times current length of the missile section

vasu_ray

Anant/James, where are you heading with stem cell initiative in India? research and/or therapies. I know China has number of hospitals that are doing stem cell treatments without proven studies Lot of Brain injury patients are being treated and currently its not predictive without knowing the scienc...

vasu_ray

Thanks James, sorry got tied up so far to all biotech gurus, are there any stem cell therapies for diabetes? can insulin generating cells be rejuvenated/replaced without the need for whole organ replacement? how are stem cells used to fix problems that are fundamentally genetics based? if a stem cel...

vasu_ray

Anant, would you be able to shed some light on successes of stem cell treatment vs gene therapy? broadly speaking stem cells seem to succeed when the right "ambiance" in terms of chemical signaling from surrounding cells exist while gene therapy is stuck on finding the exact and reliable m...

vasu_ray

welcome back NCube "Takeoff is hopeless once the reverser is deployed, and it does take a couple of seconds for the reverser to flip back out of the way. But he may have tried it, knowing the remaining distance to disaster" the ATC advised to not attempt take off in the first instance, but...

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