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standard snowball

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can anybody shed more light on this
 

Samej Jangir

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NO, IT DOESN'T!! It's just a big effing myth. T-90 has thicker armor than Arjun as well as having much better and more uniform coverage, as in, more of its surface area being covered by the said armor.


Whoever gave you that idea??!!
Then why is Arjun so heavy? Is it just because of the extra crew needing more room? As for APFSDS, rifled guns have difficulty as the fins themselves give stability and does not need spinning force to keep the ammunition aligned. Rifling interferes with the fin stabilisation. This is why most tanks use smoothbore. Also, rifled bored wear out quickly while smoothbore have long life.
 

Satish Sharma

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can anybody shed more light on this
hehe sem2sem with little antenna differences.
Screenshot_2024-05-14-23-31-11-86_40deb401b9ffe8e1df2f1cc5ba480b12.jpg
Rohini_radar.jpg
Here are some details on Rohini/ Revathi series based on some extensive googling + source research, IEEE, Radar symposium etc

-LRDE and PIT worked together on a family of mobile S Band radars, which PIT marketed as the TRS-15 and now 19

The first LRDE version was developed as the 3D CAR and displayed in 2001. (This is why Prasun seized upon the date). Of course, the fellow didnt even grasp the fact that a developed system displayed in 2001 meant work on the system would have been ongoing from several years before and that PIT would admit its cooperation with LRDE to jointly develop the radar

LRDE and PIT cooperation was basically to develop the antenna system and overall architecture.

After that both countries seem to have gone their way. Eg Signal processing on both radars is different and so are design aims.

For instance latest 3D CAR on DRDO site is advertised as TWS 150 targets, while the latest PIT TRS radar can only TWS 120. But TRS-19 has some 10-20 km more range and more height coverage. Other hardware is also different
PIT Variants:

PIT had originally advertised the TRS-15 and its been moved upto the TRS-19 designation but as mentioned, it has significant differences from the 3D CAR, as well as the Rohini. The PIT variants apparently have different transmitters, different exciter/ receivers as well as signal processing.

PIT priority:

PIT has concentrated on the TRD-1211 radar and a different design, the TRC-20. Both have been ordered by the Polish services, the AF and Army respectively.

7 TRD1211 Radar types are in service with the Polish AF. These are large radars for theater defence with ranges of 300 km and beyond.

The TRC-20 is actually 4 PESAs in one, hoisted up similar to the 3DCAR and scans in both elevation and horizontally, electronically. Instrumented range is similar to 3D CAR.
 
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