DRDO and PSUs

[Anants]

What is the meaning of this 18 sec flight time? this is the first time I am seeing a metric like this for an ATGM.

It could be for short range air defense.

 

[Arihant Roy]

I have to search for the dimensions.

But I have some charts and graphs showing the time of operation of 1st and 2nd pulse of Akash NG and the velocity achieved as a result.

In that graph, max distance travelled by the missile is shown as 50 km.

I firmly believe this is the max range. Let me find those charts.

Found 1 graph. Couldn't find the other.



Peak speed reached is on burnout of 1st pulse motor. It's 2.75 M.

2nd pulse burnout results in a max v of around 1.6 M.


I firmly believe that the dart or 2nd stage in Kusha M1 is either a new missile which has close resemblance to Akash NG or another variant of Akash NG with higher energy propellants.





It's impossible for a 30-50 km range missile to have 120 km range with the addition of a booster.

The missile in the idea pic isn't Kusha M1. Look at the din arrangement on the booster. Besides the forebody control surfaces on the 2nd stage missile are much closer to the the radome than Akash NG. It's a different missile.

Now here's Kusha M1.




Now compare the missiles in the two pics. Both the booster and KV as DRDO calls it are different.

 

[Ayan Barat]

It could be for short range air defense.

It's subsonic Dawg, would take an eternity to reach there

Anyways, here you go

1 5 3 6
​

This doesn't appear to be on a swash plate unlike the Virupaksha for Su30mki. If so, will the upward angled position of the radar have any coverage issues? Or is the angle immaterial?

Well swash plate is not something that you really need, it's more of a niche feature that comes at the cost of increase in weight, so it makes sense to not have one on AMCA and have it on Su-30MkIs instead.
Also, a movable radar will interfere with the low RCS of the plane; more on that bit later

Well as for angle, there are two reasons for this.
The minor one being that by angling it bit upwards you increase the maximum altitude you can scan at the cost of a "blind spot" below you. But as the ground is way closer to you than the space above, this is not that significant

But the major reason here is that it's a stealth platform and you want the RCS to be as small as possible. The radome is "transparent" to an enemy radar, but he can see your radar because it's made up of metal and most importantly all the supporting loha-lakkad behind it like bulkhead and mountings are pure metal. So, everything is angled upwards matching the angles of other components like vertical stabilizer. This is also the reason a swash plate is avoided in stealth platform as its variable angle negates the overall low RCS of the aircraft

View: https://x.com/GODOFPARADOXES/status/1888823101703565692

Ummnnn...are you sure that it's that only and not some mistranslation?

[ANTI] - (Missile Defence) can get mistranslated as {Anti-Missile Defence}
It's mentioned under AESA seeker so may be they are trying to say that this missile can defeat "Missile Defences" on ships using things like frequency hopping and LPI...hence Anti-Missile Defence

Just my guess

 

[Anants]

It's subsonic Dawg, would take an eternity to reach there

Anyways, here you go

1 5 3 6
View attachment 24727​

Well swash plate is not something that you really need, it's more of a niche feature that comes at the cost of increase in weight, so it makes sense to not have one on AMCA and have it on Su-30MkIs instead.
Also, a movable radar will interfere with the low RCS of the plane; more on that bit later

Well as for angle, there are two reasons for this.
The minor one being that by angling it bit upwards you increase the maximum altitude you can scan at the cost of a "blind spot" below you. But as the ground is way closer to you than the space above, this is not that significant
View attachment 24728
But the major reason here is that it's a stealth platform and you want the RCS to be as small as possible. The radome is "transparent" to an enemy radar, but he can see your radar because it's made up of metal and most importantly all the supporting loha-lakkad behind it like bulkhead and mountings are pure metal. So, everything is angled upwards matching the angles of other components like vertical stabilizer. This is also the reason a swash plate is avoided in stealth platform as its variable angle negates the overall low RCS of the aircraft
View attachment 24729


Ummnnn...are you sure that it's that only and not some mistranslation?

[ANTI] - (Missile Defence) can get mistranslated as {Anti-Missile Defence}
It's mentioned under AESA seeker so may be they are trying to say that this missile can defeat "Missile Defences" on ships using things like frequency hopping and LPI...hence Anti-Missile Defence

Just my guess

Seems Like upcoming Sukhoi GaN shall be the beast king for long time in IAF inventory. It even dwarfs AMCA radar.

 

[randombully]

It's subsonic Dawg, would take an eternity to reach there

Anyways, here you go

1 5 3 6
View attachment 24727​

Well swash plate is not something that you really need, it's more of a niche feature that comes at the cost of increase in weight, so it makes sense to not have one on AMCA and have it on Su-30MkIs instead.
Also, a movable radar will interfere with the low RCS of the plane; more on that bit later

Well as for angle, there are two reasons for this.
The minor one being that by angling it bit upwards you increase the maximum altitude you can scan at the cost of a "blind spot" below you. But as the ground is way closer to you than the space above, this is not that significant
View attachment 24728
But the major reason here is that it's a stealth platform and you want the RCS to be as small as possible. The radome is "transparent" to an enemy radar, but he can see your radar because it's made up of metal and most importantly all the supporting loha-lakkad behind it like bulkhead and mountings are pure metal. So, everything is angled upwards matching the angles of other components like vertical stabilizer. This is also the reason a swash plate is avoided in stealth platform as its variable angle negates the overall low RCS of the aircraft
View attachment 24729


Ummnnn...are you sure that it's that only and not some mistranslation?

[ANTI] - (Missile Defence) can get mistranslated as {Anti-Missile Defence}
It's mentioned under AESA seeker so may be they are trying to say that this missile can defeat "Missile Defences" on ships using things like frequency hopping and LPI...hence Anti-Missile Defence

Just my guess

What about using plasma to shield the radar when it's turned off, like ruskies use in some of their fighters

 

[Ayan Barat]

What about using plasma to shield the radar when it's turned off, like ruskies use in some of their fighters

Ayyyee bhak

How many times this plasma stealth bs needs to be debunked!?

 

[randombully]

Ayyyee bhak

How many times this plasma stealth bs needs to be debunked!?

I mean it has been used to mask" radar" by ruskies in some of their fighters.
Not the entire jet, but the radar only inside the radome

 

[fire starter]

View: https://x.com/alpha_defense/status/1888867740011680032?t=SQIsNuC13RrCr5yW7cIqeQ&s=19

 

[dfi_pk]

@Ayan Barat

Cc @Arihant Roy

I made a mistake due to not factoring the context

It seems anti missile defence (ADM) is a ECM feature of the radar something like producing electronic clones of the AShM itself ie false targets to spoof RF seeker of hostile interceptors or other emitters

 

[darkindie]

Stryker infantry vehicle deal with U.S. progresses; Javelin missile to be demonstrated again

India considers procurement of Stryker infantry combat vehicles from the U.S. amid ongoing negotiations and defence deals.

www.thehindu.com

Stryker infantry vehicle deal with U.S. progresses; Javelin missile to be demonstrated again​

View attachment 24170

View attachment 24172

Can it also be mahindra and tata paying these media outlets to remind MOD what will happen if they buy strykers and don't buy indigenous.

I am saying this because of the timing of these articles, they always come out when GOI meets US and they always quote unnamed sources.

These articles always quote that desi product has better performance than foreign one which is true but you won't find this in dalali articles.

It seems to me mahindra and tata are reminding PMO that buying strykers would not only entail finanical costs but also a huge political cost of not following through with atmarnirbhar bharat and make in india which are major political objectives.

Just a theory I am thinking because stryker has never been mentioned by GOI or any retired or serving soldier. It was always brought in discussion by US.

 

[vampyrbladez]

I mean it has been used to mask" radar" by ruskies in some of their fighters.
Not the entire jet, but the radar only inside the radome

Plasma shielding works when something re-enters the atmosphere via the ionosphere layer.

This in effect creates a sort of Faraday Cage which prevents your radar from being useful for navigation.

In the article entitled "Radar cross sections of dielectric or plasma coated conducting spheres and circular cylinders" published by the IEEE Transactions on Antennas and Propagation, September 1963, the authors found that a dielectric (plasma) shell may either decrease or increase the echo area of the object. If either one of the two reflections is considerably greater, then the weaker reflection will not contribute much to the overall effect. The authors also stated that the EM signal that penetrates the plasma shell and reflects off the object's surface will drop in intensity while traveling through plasma

There is a reason why Hypersonic Glide Vehicles are crap at AShM roles due to a moving target and none of your radars being actually useful unless you use jugaad like the LRAShM which has a secondary booster to slow down the missile from > M 8.0 to M 2.0 - M 3.0 to get fresh targetting data and increased maneuverability at terminal stage.

 

[fire starter]

Drdo X band tile & RFSOC based software defined mimo radar for ISTAR.

 

[Ayan Barat]

@Ayan Barat

I made a mistake due to not factoring the context

Actually anti missile defence (ADM) is a ECM feature basically producing electronic clones of the AShM itself ie false targets to spoof RF seeker of hostile interceptors or other emitters

Therefore I deleted the post

Arre no issues Mate, it was a classic case of "eats shoots & leaves".
They should have used "Counter Air Defence" but they didn't use cum and that's already way more than what we can ask them

But I've something else to discuss. There's a lot of chatter going on everywhere regarding the maneuver of guided Pinaka; some are saying it's a malfunction and some opinions are that it's bleeding energy. Was already doodling for radar angle so thought of doing this too

1. This is the quintessential ballistic trajectory followed by all unguided artillery.
And there's a WLR near the target

2. But only we can see this as a far standing observers; the small Weapon Locating Radar see just a small arc of this whole trajectory because of its limited range and more effectively the curvature of the Earth.

By taking multiple position reading at fixed time intervals this radar can pretty accurately calculate the position from where this projectile came and direct counter battery fire on that cordinate.
3. In guided rocket, the rocket does a weird little electric boogaloo just after launch and then continues its usual ballistic trajectory

4. But the problem is that this is happening some 60-80km away from that WLR so it's pretty much all hidden behind the curvature of the Earth. For that WLR the projectile is still pretty much like this only

5. It again back tracks the launch point and direct counter battery fire on it. And this is where it starts getting interesting because for WLR it was typical Newtonian ballistic trajectory when in reality it was a modified one...so the counter battery fire lands few kilometres away from your position. This deviation makes shoot-n-scoot even more effective.

This is one very groundbreaking feature that was conceptualized by the HIMARS system. I'm pretty sure what we're seeing on the Pinaka is pretty much this

 

[Anants]

Arre no issues Mate, it was a classic case of "eats shoots & leaves".
They should have used "Counter Air Defence" but they didn't use cum and that's already way more than what we can ask them

But I've something else to discuss. There's a lot of chatter going on everywhere regarding the maneuver of guided Pinaka; some are saying it's a malfunction and some opinions are that it's bleeding energy. Was already doodling for radar angle so thought of doing this too

1. This is the quintessential ballistic trajectory followed by all unguided artillery.
And there's a WLR near the target
View attachment 24740
2. But only we can see this as a far standing observers; the small Weapon Locating Radar see just a small arc of this whole trajectory because of its limited range and more effectively the curvature of the Earth.
View attachment 24741
By taking multiple position reading at fixed time intervals this radar can pretty accurately calculate the position from where this projectile came and direct counter battery fire on that cordinate.
3. In guided rocket, the rocket does a weird little electric boogaloo just after launch and then continues its usual ballistic trajectory
View attachment 24742
4. But the problem is that this is happening some 60-80km away from that WLR so it's pretty much all hidden behind the curvature of the Earth. For that WLR the projectile is still pretty much like this only
View attachment 24741
5. It again back tracks the launch point and direct counter battery fire on it. And this is where it starts getting interesting because for WLR it was typical Newtonian ballistic trajectory when in reality it was a modified one...so the counter battery fire lands few kilometres away from your position. This deviation makes shoot-n-scoot even more effective.
View attachment 24743
This is one very groundbreaking feature that was conceptualized by the HIMARS system. I'm pretty sure what we're seeing on the Pinaka is pretty much this

Your Diagram only talks about Pinaka's Maneuver in XY axis. But did you take into account its maneuver in Z axis at fag end of video? That maneuver is going to confuse the hell WLR.

 

[Ayan Barat]

Your Diagram only talks about Pinaka's Maneuver in XY axis. But did you take into account its maneuver in Z axis at fag end of video? That maneuver is going to confuse the hell WLR.

And did you take in account that this 2D drawing itself is too much for my poor MS-Paint?

 

[Anants]

And did you take in account that this 2D drawing itself is too much for my poor MS-Paint?

Hurrr Badbakk - You have already shown Good Paper drooling skills. - you should have used that

 

[randombully]

Plasma shielding works when something re-enters the atmosphere via the ionosphere layer.

This in effect creates a sort of Faraday Cage which prevents your radar from being useful for navigation.



There is a reason why Hypersonic Glide Vehicles are crap at AShM roles due to a moving target and none of your radars being actually useful unless you use jugaad like the LRAShM which has a secondary booster to slow down the missile from > M 8.0 to M 2.0 - M 3.0 to get fresh targetting data and increased maneuverability at terminal stage.

It was used when "radar was off".

 

[Ayan Barat]

Bruh...imagine randomly stumbling across 7 APFSDS-T

Obviously for everyone else it's just plain old raakir laanchar

https://ndtv.in/india/punjab-rocket-launcher-found-in-a-bag-on-rajpura-road-patiala-7676738.

Btw yeah, I know these are most probably training ones that somehow leaked out of firing range

 

[fire starter]

EHWT

View: https://x.com/idrwalerts/status/1888916062646751609?t=DgyvyE-0IlBjD2c6EbjGeQ&s=19

 

[fire starter]

Drdo bullet resistant shield, it can also be used as a bullet proof vest during combing and searching operation.