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Sankalan Chattopadhyay Profile picture
@VinodDX9
Aug 28, 2020 • 3 tweets • 2 min read • Read on X
#thinktank

Many do not have much idea about how powerful 120 mm rifled gun of indigenous Arjun MBT is. Without diving into complex technology parameters, in simple comparision, while OFB 125 mm can defeat triple heavy target at 3.5 km 120 mm can destroy it at 5 km distance! Image
@KUNALBI25146617 @sayareakd @Soumik_Pyne
@bsdhanoa @RaveenKr @rathorekaran17 sir

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More from @VinodDX9

Sankalan Chattopadhyay Profile picture
Feb 7
Stryker thread- origin, requirements, and concerns in Indian context

First, what's our requirement?

The only released RFI is for 198 AFV for the Recce & Support role
Transportability: Il-76 & C-17
Must be amphibious
Engine: minimum 25Hp/T Image
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While it was almost certain that one of the four Indian companies, engaged in 8×8 AFV projects, would be selected. But then came the bolt from the blue. According to the reports, the total requirement is of 530 and army eyes Stryker as the preference!

theprint.in/defence/india-…Image
But what is Stryker?

Everything started back in the 1990s when GMD offered a variant of Swiss MOWAG Piranha IIIH to Canada. The Canadian variant came to be known as LAV III. GMD offered this to the US Army under the IAC program. That American variant was named Stryker. Image
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Read 26 tweets
Sankalan Chattopadhyay Profile picture
Nov 18, 2024
History of Arjun tank development- long thread

The first GSQR for an Indian Main Battle Tank dates back to the late 1950s, which couldn’t be materialised, and the Indian Army ended with the procurement of the Centurion, Vickers Mk. 1, and T-54 in the coming decades.
However, one might be surprised to find none of the tanks then, with services, could meet all the requirements of the original GSQR. After the 1971 war, the army decided to go full throttle with the design, development and manufacture of an indigenous design.
The first GSQR No. 326 was issued in 1972. The project for design and development was sanctioned in May 1974 and project was taken up by the CVRDE. The PDC of the project was envisaged for 10 years. Thus, it was hoped that the MBT would be ready for induction by 1985.
Read 32 tweets
Sankalan Chattopadhyay Profile picture
Jan 13, 2024
Unlike the UAV which anyhow can be put into services, the Stryker is rather a much complex thing. Here's a thread, if you don't mind a long one.

First, what's our requirement?
198 AFV for Recce & Support
Transportability: Il-76 & C-17
Must be amphibious
Engine: minimum 25hp/T Image
While at least four indigenous designs (TAS, L&T, MDSL & KSSL) will compete, reportedly Stryker is also offered to India. And here comes the question, what variant actually will be pitched?

During the visit of CDS Gen Bipin Rawat, Stryker ICV-D and ICVVA1-S were showcased. Image
What's the ICV-D?

It's the FBH (Flat Bottom Hull) variant also designated M1296. It's a 19T platform, the lightest such variant. Thus it can be put into C-130 as well! It's equipped with Kongsberg RT40 turret (MCT-30) with XM813 30mm gun. It's powered by Cat 3126 engine (350hp). Image
Read 19 tweets
Sankalan Chattopadhyay Profile picture
Aug 14, 2022
India's Cancelled Fighter Jet Programs - which could change the course of future

Ground Attack Fighter-I (1965)

Transonic, two engine platform to be powered by M.45, short range strike platform..but soon there was requirement of better capability
Ground Attack Fighter -II (1966)

It was to be powered by two R.11F-300, supersonic platform with air-to-air defence as well. Ordnance carriage on eight under wing stations as well as internal bay! However, lack of necessary infrastructure led an alternative.
HF-24 Mk. 1R

Feasible alternative to GAF-II, powered by R.11 it was to be a medium range platform offered to be in services by 1976. But it didn't see any future, instead requirements led to ASA.
Read 7 tweets
Sankalan Chattopadhyay Profile picture
Jul 3, 2022
Procurement of armoured vehicles by the Indian Armed Forces

#IndianArmy 1300 MDSL Armoured Light Specialist Vehicle (Rs. 1056 cr). to be equipped with MMG, AGL, ATGM

4.75T GVW category
1T payload (400 kg cargo)
215 hp engine
D+3P/D+5P
STANAG I/II

pib.gov.in/PressReleasePa…
#IndianArmy 27 BF M4 (Rs. 177.95 cr)

GVW: 16T
Payload: 2.7T
Crew: 2+8
Engine: 450hp
STANAG III

google.co.in/amp/s/theprint…
#IAF Ashok Leyland Light Specialist Vehicle

GVW: 8T max
Payload: 1T
Crew: 2+2
Engine: 180 hp

auto.hindustantimes.com/auto/news/asho…
Read 16 tweets
Sankalan Chattopadhyay Profile picture
Feb 27, 2022
A long thread on Russian weapons used in the 2022 Russia-Ukraine War
(please share if you like)

The list is based on reports, images and videos published etc

Ballistic/Cruise Missiles:

Iskandar (ballistic)
Kh-101/555 (ALCM, subsonic)
Kalibr (LACM) ImageImageImage
SPH:

Akatsiya (152 mm)
Msta-S (152 mm)
Gvozdika (122 mm) ImageImageImage
MRL:

Smerch (300 mm)
Grad (122 mm)
TOS-1A ImageImageImage
Read 23 tweets

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