DRDO, PSU and Private Defence Sector News

[kurup]

Yes it was
View attachment 83638

Even HVT retweeted it

 

[arkos]

Shukla is a patriot but more of a media opportunist, whatever he did during Indo-China escalation was for gaining hype.

Shkula is a dalal. He is trying very hard to correct his past.

 

[fire starter]

Lmao now TV9 bharat varsh showing that India is going to test agni 6 next month.

 

[Gandaberunda]

Lmao now TV9 bharat varsh showing that India is going to test agni 6 next month.

In that channel world war happening from 2019

 

[FalconSlayers]

Lmao now TV9 bharat varsh showing that India is going to test agni 6 next month.

I remember they broke out a news that India has purchased F-35 and their reporters were claiming to be standing on top of Black Top.

Now Agni-VI

 

[Akula]

What do you guys think about the OFB 155mm/52cal MGS ?
View attachment 83617

If successful in Chand, Surya, Mangal and Shani greh trials and accepted by Army, than it will save lot of .

 

[fire starter]

Some more.

 

[Karthi]

Barhmos Simulation

EW sensors and its aerodynamic CFD Study . RWR may be

Aerodynamic Simulation of an airborne sensor in which the sensor is placed in between Missile and pylon.

Flow features around BVR , Astra MK2 may be

HSTDV Cruise Vehicle

Design and CFD analysis done on a variety of Designs for Missiles .

Simulation of kill vehicle of 5000Km Interception missile.

this one is very interesting , the second one is Ghatak , the first one is possibly considered and later rejected or may be two different versions with different purposes ?

 

[mokoman]

View attachment 83783View attachment 83784

Barhmos Simulation

View attachment 83785View attachment 83786

EW sensors and its aerodynamic CFD Study . RWR may be

View attachment 83787

Aerodynamic Simulation of an airborne sensor in which the sensor is placed in between Missile and pylon.

View attachment 83789

Flow features around BVR , Astra MK2 may be

View attachment 83790

HSTDV Cruise Vehicle

View attachment 83791

Design and CFD analysis done on a variety of Designs for Missiles .

View attachment 83793

Simulation of kill vehicle of 5000Km Interception missile.

View attachment 83792

this one is very interesting , the second one is Ghatak , the first one is possibly considered and later rejected or may be two different versions with different purposes ?

both look like US aircrafts to me.

 

[Vamsi]

View attachment 83792

this one is very interesting , the second one is Ghatak , the first one is possibly considered and later rejected or may be two different versions with different purposes ?

1st looks like F117 and the second one look like B2 Spirit .see it has 2 intakes

 

[mokoman]

@Bleh

i know this might sound stupid , but there are free software out there that can compute approximate RCS for jets ,

i know people here use modo/blender to model AMCA , tejas jets etc

anyone tried them or want to check them out ?

 

[Karthi]

1st looks like F117 and the second one look like B2 Spirit .see it has 2 intakes

I think you are right , I made mistake mainly because of excitement they used these pics are for may be representative or may be they did some simulation for something. But other pics are original

 

[Karthi]

Passive radar India. IAF had Passive radar and details not Known. there are chances that army may also procure passive radar .

Passive Radars are better capable than conventional radar on detecting stealth targets. These systems exploit existing radio emissions, such as FM, TV and cellular telephony signals, trying to detect echoes which would indicate the potential presence of a flying target. The above one in the pic uses FM signals .

Passive radars cannot be detected, allowing for covert operation. On the other hand, the coverage of such systems is limited up to medium altitudes, since there is practically no broadcast at higher altitudes. The use of active, low frequency band radars, along with passive radars covering the lower tier, would provide an ideal combination against stealth threats.

A basic passive radar is comprised of a “reference” antenna, directly receiving the broadcast of a transmitting source, and a “target” antenna, searching for echoes of this broadcast, indicating that a target might be there. If a target is present, then the signal from the transmitting station will be reflected on it and the echo received by the “target” antenna will be shifted in time (due to the longer distance covered to and from the target), shifted in frequency (due to the Doppler effect, since the target is moving), and of course at a considerably lower power level (due to the longer distance and the reflection on the target). Comparing the direct signal of the “reference” antenna and the signal received by the “target” antenna, taking also into account the relevant geometry (positions of antennae and of the transmission source), the position of the target can be estimated.

When a stealth aircraft “illuminated” by a radar, the incident radiation is not reflected back but scattered towards other directions. This technique is effective against all common, monostatic radars, where the same antenna is used for both transmission and reception. The multistatic nature of passive radars, where the transmitting and receiving antennae are in different positions, allows in most cases a more suitable geometry that favors the detection of the target. Even more so, as the frequencies used are relatively low, the corresponding wavelengths become comparable to the target-aircraft structural parts (wings, empennage, stabilators etc.), so that resonance phenomena appear, triggering scattering modes that increase the target’s echo. Finally, Radar Absorbent Material (RAM) coatings are less efficient at lower frequency bands. In consequence, hiding an aircraft from a passive radar becomes much more difficult.

The exact range of the above radar is not known , but I think it has several hundreds of Km range and can be extended if we deploy more receiving stations

 

[mokoman]

View attachment 83876View attachment 83877

Passive radar India. IAF had Passive radar and details not Known. there are chances that army may also procure passive radar .

Passive Radars are better capable than conventional radar on detecting stealth targets. These systems exploit existing radio emissions, such as FM, TV and cellular telephony signals, trying to detect echoes which would indicate the potential presence of a flying target. The above one in the pic uses FM signals .

Passive radars cannot be detected, allowing for covert operation. On the other hand, the coverage of such systems is limited up to medium altitudes, since there is practically no broadcast at higher altitudes. The use of active, low frequency band radars, along with passive radars covering the lower tier, would provide an ideal combination against stealth threats.

A basic passive radar is comprised of a “reference” antenna, directly receiving the broadcast of a transmitting source, and a “target” antenna, searching for echoes of this broadcast, indicating that a target might be there. If a target is present, then the signal from the transmitting station will be reflected on it and the echo received by the “target” antenna will be shifted in time (due to the longer distance covered to and from the target), shifted in frequency (due to the Doppler effect, since the target is moving), and of course at a considerably lower power level (due to the longer distance and the reflection on the target). Comparing the direct signal of the “reference” antenna and the signal received by the “target” antenna, taking also into account the relevant geometry (positions of antennae and of the transmission source), the position of the target can be estimated.

When a stealth aircraft “illuminated” by a radar, the incident radiation is not reflected back but scattered towards other directions. This technique is effective against all common, monostatic radars, where the same antenna is used for both transmission and reception. The multistatic nature of passive radars, where the transmitting and receiving antennae are in different positions, allows in most cases a more suitable geometry that favors the detection of the target. Even more so, as the frequencies used are relatively low, the corresponding wavelengths become comparable to the target-aircraft structural parts (wings, empennage, stabilators etc.), so that resonance phenomena appear, triggering scattering modes that increase the target’s echo. Finally, Radar Absorbent Material (RAM) coatings are less efficient at lower frequency bands. In consequence, hiding an aircraft from a passive radar becomes much more difficult.

The exact range of the above radar is not known , but I think it has several hundreds of Km range and can be extended if we deploy more receiving stations

@porky_kicker posted this while back , i think he said it was from BEL .

i think its a joint venture with a UK company , forgot name ,

company had specs on it on their page , unjammable , cannot be targeted , can detect stealth aircraft like you said .

 

[FalconSlayers]

Amiet R. Kashyap (@Amitraaz) Tweeted:
Static Firing Set-up of 40 kg Ballistic Evaluation Motor at #HEMRL

 

[Killbot]

this one is very interesting , the second one is Ghatak , the first one is possibly considered and later rejected or may be two different versions with different purposes

First one is F117 Nighthawk and second is B2 Spirit. US Stealth Bombers. Ghatak is very, very different externally.

 

[Indx TechStyle]

First one is F117 Nighthawk and second is B2 Spirit. US Stealth Bombers. Ghatak is very, very different externally.

This is from Ghatak render at Aero India.

 

[Indx TechStyle]

This is from Ghatak render at Aero India.

*Not Ghatak, but DRDO SWIFT, a technology demonstrator for Ghatak, may fly sometime in this year.

 

[Haldilal]

*Not Ghatak, but DRDO SWIFT, a technology demonstrator for Ghatak, may fly sometime in this year.

Ya'll Nibbiars

 

[Killbot]

This is from Ghatak render at Aero India.

Like I said, very different. Ghatak/SWiFT has only one intake, vs 2 on B2. FTC, streamlined shape, single engine, etc are also points of difference.