DRDO, PSU and Private Defence Sector News

[Lonewarrior]

And as for these

Why is the gimbal which is not heavy when used with PESA become heavy with AESA?

There's no gimbal in PESA; it's fixed just like AESA.

So, what stops AESA being used along with gimbal in missiles?

This and also the higher cost. The cost of one PESA is one TRX module + 100 antennas but for AESA it becomes 100 antennas + 100 TRX modules.

2. BVR-AAM missiles are usually fired from quite a good stand-off distance if not beyond visual range, so this requirement of extreme radar angle doesn't matter much. This extreme radar angle only plays useful role in close range heat seeking missiles where you would fire it in high off-boresight.

 

[NutCracker]

Only Typhoon is Chad enough to use this.

Grippen E bhi..

 

[Lonewarrior]

Grippen E bhi..

View attachment 200055

Ah my bad, missed this Chhota Chutiya
Thanks

Yup, Raven is also pretty similar to Captor E; a mechanically steered AESA

 

[Chinmoy]

RFP issued for 400+ LEV.

 

[NoobWannaLearn]

Wtf

 

[NoobWannaLearn]

 

[Anandhu Krishna]

Wtf

Lol. People are surprised. This is the same country that asked the Japanese government for help to spy on the Japanese population.

 

[Master Chief]

Wtf

How does US fly missions over India, without GOI permission ? And how does TEJA BHAI know all this?
US did conduct pre and post analysis of the event, as it has the capability to analyze every major event in Earth's orbit.. This is common knowledge and analysis of debris field, velocity of projectile etc. was published by western experts at the time and is common knowledge..

 

[Anandhu Krishna]

How does US fly missions over India, without GOI permission ? And how does TEJA BHAI know all this?
US did conduct pre and post analysis of the event, as it has the capability to analyze every major event in Earth's orbit.. This is common knowledge and analysis of debris field, velocity of projectile etc. was published by western experts at the time and is common knowledge..

Maybe This.
Read somewhere that the documents also includes information about US spying on its western allys.

Pentagon documents leak a risk to US national security, officials say

Officials say the leaked files appear to be in a format similar to those issued to senior leaders.

www.google.com

 

[Anandhu Krishna]

China Brings New WS-20 Turbofan Engines Into Service For Y-20 Transports: A Major Boost to Airlift Capabilities

The Shenyang WS-20 turbofan engine has reportedly been made ready for operational service, with the power plants expected to enhance the capabilities of the country’s

militarywatchmagazine.com

View attachment 200005

Chinese WS-15 engine prepared for mass production

An official of China's Aero Engine Corporation of China (AECC) has said that the country's Shenyang WS-15 engine for fighter aircraft is ready for mass production.

www.google.com

 

[Blademaster]

Chinese WS-15 engine prepared for mass production

An official of China's Aero Engine Corporation of China (AECC) has said that the country's Shenyang WS-15 engine for fighter aircraft is ready for mass production.

www.google.com

View attachment 200091


View attachment 200090

What is the weight of the GE414IN? The performance rating - is that in dry thrust or wet thrust?

 

[Anandhu Krishna]

What is the weight of the GE414IN?

F414-GE-400 is 1,109 Kg so INS6 is probably the same.

The performance rating - is that in dry thrust or wet thrust?

Wet

 

[AnantS]

Wtf

US has been doing that for years. I remember an article years back where they mentioned how they accurately gathered details on every type launched by India even before India made it public - by snooping on the telemetry data of launch. I couldn't find that article @Indx TechStyle

 

[Blademaster]

F414-GE-400 is 1,109 Kg so INS6 is probably the same.

Wet

So basically if GE promises to get to the 110KN at a weight of 1.1k kgs or about 1.1 tons, then that's the better engine than the WS-15 or AL-31FN engine because it has more thrust per kg than those engines.

 

[binayak95]

US has been doing that for years. I remember an article years back where they mentioned how they accurately gathered details on every type launched by India even before India made it public - by snooping on the telemetry data of launch. I couldn't find that article @Indx TechStyle

They have a massive constellation of satellites dedicated to monitor and track any kind of missile launch - part of both SIGINT and early warning against ICBM attack

 

[AnantS]

They have a massive constellation of satellites dedicated to monitor and track any kind of missile launch - part of both SIGINT and early warning against ICBM attack

True, but also they used listening posts, tracking ships and aircrafts to snoop on telemetry data(TELEINT). Telemetry data helps making sense on capabilities of lv in addition to tracking by satellites. I remember reading that article which mentioned how they detected tests of certain missiles much before their public announcement. DFI might have that article lying somewhere in on of the old posts.

Edit: I think I found something related posted by @porky_kicker long back

DRDO, PSU and Private Defence Sector News

Look at the lateral thruster. You would have a fair idea. lateral thrusters creates a lateral force in any direction which allows the missile to get closer to its target without high acceleration manoeuvres ( manuver the missile while it remains pointed at the target ) and within the lowest...

defenceforumindia.com

https://defenceforumindia.com/attachments/ui-gif.30712/

 

[Lonewarrior]

How does US fly missions over India, without GOI permission ? And how does TEJA BHAI know all this?

By...ummm...how should I phrase it...by not flying over India.

They takeoff from Diego Garcia and maintain station just on the perimeter of our ADIZ and being Murica, their sensor are powerful enough to snoop from that far away.

Even in case of Mission Shakti they had sufficient HUMINT about something big happening in March, so a RC-135 was sent to Diego Garcia. And after everything was known it coolly went home

And as for how someone knows about it, you just need to connect three dots....the date, the type of plane and its flight path.

 

[Master Chief]

By...ummm...how should I phrase it...by not flying over India.

They takeoff from Diego Garcia and maintain station just on the perimeter of our ADIZ and being Murica, their sensor are powerful enough to snoop from that far away.

Even in case of Mission Shakti they had sufficient HUMINT about something big happening in March, so a RC-135 was sent to Diego Garcia. And after everything was known it coolly went home
View attachment 200120

And as for how someone knows about it, you just need to connect three dots....the date, the type of plane and its flight path.

This flight path too was public knowledge at the time.. Not the same as Mr.Tej saying US aircraft flew over India..
If he means snooping around India, around the launch date.. then, well, it's old news.. and US has been monitoring Indian ballistic missile launches for a very long term, with aircraft as well as stations in South East Asia.

 

[Sayman Ame]

Are ChaCha, kaahe faaltu me radar masterclass dilwa rahein hain hmse

1. MSA or Mechanically Scanned Array radar; used on almost all the missile currently in service.
A single TRX module feeding signals to a simple disk antenna mounted on a mechanical gimball. This disk antenna is mechanically steered to scan the environment; can scan a very wide area but at a slower rate. Has numerous cons with with only two pros being extremely cheap and low SWaP (Size, Weight and Power) requirements; but this makes it perfect for expendable applications like missiles.

2. PESA or Passive Electronically Scanned Array radar; used on most of the fighters.
A single TRX module feeding signals to a fixed array of multiple antennas. There're no moving parts and the radar is steered electronically by using constructive and destructive interferences; can scan a smaller area compared to MSA but at an extremely high rate. Almost same SWaP as MSA because whatever weight reduction is made by removing mechanical gimball is gained by additional electronic devices. Better than MSA but expensive. Only example I'm aware of is Meteor.

3. AESA or Active Electronically Scanned Array radar; the gold standard.
Almost similar arrangement of numerous individual antennas into a large array like in PESA but instead of a single TRX unit feeding signals to all of them; now each antenna module has its own TRX module. Again just like PESA the wave is scanned using interferences. Adds more perks like pencil beaming, LPI to PESA. Used by Japs on their AAMs.

4. Mechanically Steered AESA
Mounts the whole AESA radar on a mechanical gimbal. Has all the advantages of AESA together with the advantage of a wide area coverage but on the cost of increased SWaP requirements. Only Typhoon is Chad enough to use this.

Buddy......how do you do that? That sorcery of blurring the entire text until I click on it?!!?!

 

[Photon]