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Oct 15 10 tweets 3 min read Read on X
🧵Short thread while im posting on the French Navy to talk about the FDI's fancy integrated mast. 1/10 Image
The Panoramic Sensor and Intelligence Module (PSIM) is a fully integrated mast hosting coms, EW, radars but also the entire Combat Information Center ! 2/10 Image
This approach was pioneered by Naval Group on the Gowind class to save construction time 3/10 Image
While less complex it already hosted radars and coms elements as well as the CIC, communication center, crypography and the coms transmition rooms. 4/10 Image
The FDI's PSIM is significantly more complex with dozens of antennas from ESM to powerful AESA radar arrays. Integrating all this together while avoiding interferences was a difficult puzzle. Image by @christosKoffas 6/10 Image
The PSIM being a single block allows for parrallel construction with the hull, early ground testing and integration to de-risk further trials. 7/10 Image
This is part of a wider strategy by Naval Group to accelerate surface vessel production at its Lorient shipyard. 8/10 Image
Once fully built and tested the PSIM is delicately slotted directly into the hull's heart. 9/10 Image
While the FDI's first in class, Amiral Ronarc'h, suffered some inital delays, the construction of the following units (5x for France and 3/4 for Greece) is well underway at a good pace. Naval Group seems to have commited to this original but effective tehcnique. 10/10
Hope you have enjoyed this little thread ! @D__Mitch @800Tonnes @M51_4ever @xaviervav @navalgroup @FRHoffmann1 @heatloss1986 @Doha104p3 @ThrustWR @John_A_Ridge @StrategicTrends @MassiasThanos @VLO225

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More from @VLS_Appreciator

Oct 14
Thread on the S-300P / S-400 Family: Part 2 System. 1/24 Image
This part of the series will give an overview of the different systems that came out of the development and latter iterative upgrades of the S-300P family. 2/24 Image
The first system to reach operational service was the S-300PT. This was an interim solution as the mobile MAZ-453 chassis was not ready yet. Still, the threat of cruise missiles was felt to be so important that this makeshift solution was rushed into service. 3/24 Image
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Oct 10
Thread on the S-300P / S-400 Family: Part 1 Genesis. 1/17 Image
By the mid-1960s, with the fielding of the long-range S-200 and the layers of medium range S-25, S-75 and S-125, the USSR was effectively able to defend itself against most threats from the US. 2/17 Image
Indeed, the B-52 needed to penetrate low and deep within Soviet airspace to its launch positions, while the high-speed high-altitude B-58 Hustler, B-70 Valkyrie despite being challenging targets were within the engagement zone of the S-200. 3/17 Image
Read 19 tweets
Aug 31
A Thread on The Troubled Development of the Sapsan Ballistic Missile, Ukraine’s ATACMS. 1/19 Image
I see a lot of people being confused when referring to this system, switching between Hirm, Grom-2 or Sapsan, hopefully this thread will clarify the situation. 2/19 Image
Back in 2006 the National Security and Defence Concil of Ukraine looked for a system to replace the ageing Totchka-U ballistic missile with its 120km range. Design of that system was given to the Pivdenne Design Bureau known for their work on Soviet ICMBs and rockets. 3/19 Image
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Aug 29
Thread on Ukraine’s Neptune: The Underdog That Struck Back. 1/20 Image
Following the Russo-Ukrainian intergovernmental agreement on industrial, scientific and technical cooperation of the 18th November 1993, the Luch design bureau received an X-35 (Kh-35) missile from Zvezda-Strela. 2/20 Image
From there the development of the RK-360MC Neptune development started in 2010 as a collaboration between Artem Luch and Sich Motors. While slow at first, development rapidly accelerated after the 2014 Crimean annexation. 3/20 Image
Read 21 tweets
Jul 15
🧵A Thread on China’s New Family of Anti-Ship Cruise Missiles: The YJ-18. 1/17 Image
While the genesis pf the YJ-18 is unclear, it seems to originate from the studies launched by the PRC in 2000 to support its A2/AD strategies and counter the Aegis Combat System. CASIC’s Third Academy led the design process for this new class of anti-ship cruise missiles. 2/17 Image
First public mentions of the YJ-18 started to appear in 2009 in metallurgical research papers, and in August 2010 a US documents first referred to it as the CH-SS-NX-13. Testing was finalized in 2013, it entered active service in 2014, and was paraded in October 2019. 3/17 Image
Read 19 tweets
Jul 8
🧵A Thread on the US’ AIM-174B and China’s YJ-12 Carrier Killer Cruise Missile: A Dance of the Vampires with Chinese Characteristics. 1/17 Image
In light of recent events with the unveiling of the US’s new AIM-174B, let’s discuss the threat it’s mostly meant to counter, the YJ-12. 2/17 Image
In 1995-1996, the US’s display of power during the Third Taiwan Strait Crisis, sending both the USS Independence and USS Nimitz carriers, profoundly shocked the PRC’s leadership. This strengthened the Chinese ambition to develop weapons powerful enough to threaten US CSGs. 3/17 Image
Read 22 tweets

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