Sankalan Chattopadhyay Profile picture
Enjoying Life ! oh yah trying to express feelings through @reviewvayu
Aug 14, 2022 7 tweets 1 min read
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.
Jul 3, 2022 16 tweets 7 min read
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…
Feb 27, 2022 23 tweets 14 min read
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
Nov 22, 2021 20 tweets 5 min read
Defence Budget- India vs China

Acc to SIPRI the defence budget of India and China in 2020 stands (current value) at Bln $72.88 and Bln $252.3 (for the official value please see third and fourth tweet). But this huge humongous gap wasn't started in one day. Now, this thread is based on data shown only by SIPRI, not necessarily match official one , to avoid complexities. Acc to various sources, Chinese defence budget in 2021 officially stands at CNY 1.35 Trillion (~Bln $209). Please check next tweet for official Indian data.
May 24, 2021 14 tweets 5 min read
When Indian test pilot taught a lesson to German legends

India's first indigenous fighter jet (and also first from Asia) HF-24 was designed by HAL. The design was much ahead of that time and India earned an incredible achievement soon to be faded away . At first German legend Wilhelm Messerschmitt was offered to lead the joint design team . He had made Bf 109- second most produced fighter aircraft ever, Me 209- the fastest of that time and Me 262- world's first jet fighter. But he refused the offer.
Dec 5, 2020 9 tweets 4 min read
#1971War

Chachro Raid

Whenever history will look at the finest behind enemy lines operations, the Chachro Raid will find a glorious place in it. It was a daring Surgical Strike conducted by 10 PARA SF 80 km deep inside Pakistan, strating the mission on Dec 5 The objective was to strike deep inside Chachro and create a chaos there. It was a strategically important stronghold for Pakistani Army. A hammer strike there would cut off supply line to Pak Army. To complete their mission,the forces travelled over 500 km !
Sep 28, 2020 8 tweets 3 min read
On the 193rd Gunners Day #IndianArmy here are some majestic artilleries made in India in medival age.

Malik-i-Maidan

Weighing over 55T it was the largest cannon of the world ! Made in Ahmednagar captured by Bijapur and then Aurangzeb...had extraordinary metallurgy Image Jaivana

Made during reign of Jai Singh II it was the largest cannon on wheels ! Weighing over 50T had a range of more than 35 km. Image
Sep 21, 2020 4 tweets 2 min read
Many people can't understand why double hump Bacterian camels, soon to be inducted into Indian Army to help patrol India-China border, is an advantage rather burden. They can carry 170 kg of load easily for 12 km even at 17000 ft of elevation. By the way, yes, PLA of China too used animal for patrolling
abc.net.au/news/2019-08-1…
deccanchronicle.com/nation/in-othe…
businessinsider.com/china-has-yak-…
gizmodo.com.au/2019/08/why-ch…
Sep 16, 2020 25 tweets 6 min read
Here is a thread on images from tank battles in 1965 war
Sep 8, 2020 6 tweets 2 min read
#Breaking

#IndianArmy statement - Thread

At no stage has the Indian Army transgressed across the LAC or resorted to use of any aggressive means, including firing. It is the PLA that has been blatantly violating agreements and carrying out aggressive manoeuvres, while engagement at military, diplomatic and political level is in progress.
Sep 7, 2020 24 tweets 5 min read
Debunking Fantasy created around MM Alam

PAF Squadron Leader MM Alam (11 Sqn) is claimed by Pakistan to be only Ace of the continent who shot down five IAF Hunters over Sargodha in a matter of minutes four of which he shot down in a mere thirty seconds.

But there are problems On 7 Sep, 1965 #IAF conducted six daring strikes against PAF stronghold Sargodha. The mission ended into a success with a heavy blow to PAF which they couldn't recover in that war. IAF lost five aircrafts but Pakistan claimed 10 and tried to fantacise as a deceive victory.
Aug 30, 2020 15 tweets 4 min read
So Sunday Special , here is the thread one of our friends asked for.
Current and near future helicopters of Indian Armed Forces.
#IndianArmy #IAF #IndianNavy
Pic courtesies to their owners

ALH Dhruv ALH-WSI Rudra
Aug 30, 2020 6 tweets 3 min read
MMRCA 2 and some questions

1) Do the #IAF can afford the huge financial support they need ?
There's no doubt that it will take huge cost even if spanned for several years. Image 2) Accepting that IAF will have the capability to afford even 20+ Bln USD , will not investing lion share of this into indigenous development (rest for stop gap mesure procurement) will lead to a better future for IAF than procuring foreign jets ? Image
Aug 27, 2020 6 tweets 4 min read
Thread - BVRAAM of #IAF- future

Astra Mk 1: 110 km
Astra Mk 2: 160 km
SFDR: 340 km
BrahMos AAM:400-500 km
CCM: 40 km India recently ordered (range according to Rosobornexport )

R-27R1: 75 km
R-27ER1: 100 km
R-27T1: 80 km
R-27ET1: 80 km
R-73E (SVV-AE): 30 km
R-77 (RVV-AE): 80 km

India has recently tested (Sputnik report)

RVV-MD: 40 km
RVV-SD: 110 km
RVV-BD: 280 km (range by Degael)
Jul 18, 2020 11 tweets 4 min read
Sad story of India's first attempt to have indigenous anti tank missile for #IndianArmy - a brief thread

DRDO Anti Tank Missile

The very first anti tank developed by DRDO was a first generation MCLOS Wire Guided Missile . It had a 106 mm warhead and range was 1.6 km. Image In 1959 a study on feasibility of a first gen ATM was proposed at a budget of Rs. 6 lakhs. Wind tunnel testing was started at IISC, Bengalore. Full set of force and momentum test was completed by 1961. It had a speed of 250-300 fps. Requirement was of a 2 km range missile. Image
Jul 11, 2020 4 tweets 3 min read
Did you know that an Indian company made famous warships for British Navy ?

HMS Trincomalee was made by Wadias in the then Bombay #Mumbai in 1816 , which still does exist and currently is a museum. Two more famous war ships were made by Jamsetjee Bomanjee Wadia for Royal Navy . Image He made HMS Minden . And it is related to #US ! Francis Scott Key wrote poem "Defense of Fort M'Henry", on that warship. It is the lyrics for "The Star-Spangled Banner" - the national anthem of the US. Amazing isn't it?
Now let's talk about another ship. Image
Jul 6, 2020 27 tweets 20 min read
#IndiaArmour

In this thread we will talk about armoured cars of India since WW 2 to till now- mainly indigenous -in services, used or developed, but a few foreign procurement also , till now, please add or suggest if I miss one

Vickers Crossley Armoured Car
ACV-IP #IndiaArmour

Ferret
Humbler
Diamler

Though first pic is possibly mistakenly lebelled as Ferret . It should be DRDO Scout. Ferret looks different even with a triangular bonet .
Jun 12, 2020 9 tweets 4 min read
You need different armours for different domains. One can't serve you in all cases. Let's go through a thread . All Russian.

BMP-2M with Berezhok Turret

30 mm autocannon + 2*2 Kornet M ATGM. Good for infantry fighting, well established anti armour capability & it is amphibious! Image But still it lacks the adequate fire power to defeat new gen light and medium tanks and heavily armoured IFVs.
So BMP-3M is equipped with a 100 mm 2A70 gun, co-axial 30 mm 2A42 ,a 7.62 PKT MG , two PKT at bow side . The rifled gun fire AT-10 ATGM too, one can mount AT-15 ATGM Image
Feb 27, 2020 12 tweets 6 min read
#PakLiesBusted

The then DG ISPR Gen Ghafoor himself claimed that #Pakistan hadn't use F-16 against #IAF. Here a part from his speech where he can be heard saying so. Later Pakistan accepted F-16s were used in aggression against India
Feb 26, 2020 11 tweets 7 min read
#IndiaWeapon

A) AEW&CS

1 :

EL/W 2090 Phalcon on Il-76 A-50EI
360° coverage, range 400-500 km

Three in services, two more will be acquired Image #IndiaWeapon

2 :

DRDO 360° AWACS
Based in A-330

Initially two will be ordered, later six more will likely to be inducted. Image
Sep 10, 2019 25 tweets 11 min read
#1965War

Who can forget the epic battle where just 135 Indian tanks in which only 45 were Centurions brought catastrophe to 260+ Pakistan Army tanks, resulting destruction of 100+enemy tanks... #1965war

Patton Nagar....all Pakistan Army Patton tanks decided to die there